# Checking the Bison scanner. -*- Autotest -*-
-# Copyright (C) 2002-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002-2015 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# Mostly test that we are robust to mistakes.
+## ----------------- ##
+## Invalid options. ##
+## ----------------- ##
+
+AT_SETUP([Invalid options])
+
+AT_DATA([input.y],
+[[%%
+exp: '0'
+]])
+
+# We used to accept these, as -f, --report and others were sharing
+# their code with -W.
+AT_BISON_CHECK([-ferror=caret input.y], [1], [], [ignore])
+AT_BISON_CHECK([--report=error=itemsets input.y], [1], [], [ignore])
+
+# We used to accept any character after "-Werror", instead of ensuring
+# this is "=".
+AT_BISON_CHECK([-Werror?all input.y], [1], [], [ignore])
+
+AT_CLEANUP
+
+
+## ---------------- ##
+## Invalid inputs. ##
+## ---------------- ##
+
+AT_SETUP([Invalid inputs])
+
+AT_DATA([input.y],
+[[\000\001\002\377?
+%%
+?
+default: 'a' }
+%&
+%a-does-not-exist
+%-
+%{
+]])
+AT_CHECK([[$PERL -pi -e 's/\\(\d{3})/chr(oct($1))/ge' input.y || exit 77]])
+
+AT_BISON_CHECK([input.y], [1], [],
+[[input.y:1.1-2: error: invalid characters: '\0\001\002\377?'
+input.y:3.1: error: invalid character: '?'
+input.y:4.14: error: invalid character: '}'
+input.y:5.1: error: invalid character: '%'
+input.y:5.2: error: invalid character: '&'
+input.y:6.1-17: error: invalid directive: '%a-does-not-exist'
+input.y:7.1: error: invalid character: '%'
+input.y:7.2: error: invalid character: '-'
+input.y:8.1-9.0: error: missing '%}' at end of file
+input.y:8.1-9.0: error: syntax error, unexpected %{...%}
+]])
+
+AT_CLEANUP
+
+
+AT_SETUP([Invalid inputs with {}])
+
+# We used to SEGV here. See
+# http://lists.gnu.org/archive/html/bug-bison/2005-07/msg00053.html
+
+AT_DATA([input.y],
+[[
+%destructor
+%initial-action
+%lex-param
+%parse-param
+%printer
+%union
+]])
+
+AT_BISON_CHECK([input.y], [1], [],
+[[input.y:3.1-15: error: syntax error, unexpected %initial-action, expecting {...}
+]])
+
+AT_CLEANUP
+
+
+
## ------------ ##
## Invalid $n. ##
## ------------ ##
AT_DATA([input.y],
[[%%
-exp: { $$ = $1 ; };
-exp: { @$ = @1 ; };
+exp: %empty { $$ = $1 ; };
+exp: %empty { @$ = @1 ; };
]])
-AT_BISON_CHECK([input.y], [1], [],
-[[input.y:2.13-14: integer out of range: '$1'
-input.y:3.13-14: integer out of range: '@1'
+AT_BISON_CHECK([-fcaret input.y], [1], [],
+[[input.y:2.20-21: error: integer out of range: '$1'
+ exp: %empty { $$ = $1 ; };
+ ^^
+input.y:3.20-21: error: integer out of range: '@1'
+ exp: %empty { @$ = @1 ; };
+ ^^
]])
AT_CLEANUP
%%
exp: foo { $$; } foo { $2; } foo
| foo
- | /* Empty. */
+ | %empty
;
]])
-AT_BISON_CHECK([input.y], [1], [],
-[[input.y:5.12-13: $$ for the midrule at $2 of 'exp' has no declared type
-input.y:5.24-25: $2 of 'exp' has no declared type
+AT_BISON_CHECK([-fcaret input.y], [1], [],
+[[input.y:5.12-13: error: $$ for the midrule at $2 of 'exp' has no declared type
+ exp: foo { $$; } foo { $2; } foo
+ ^^
+input.y:5.24-25: error: $2 of 'exp' has no declared type
+ exp: foo { $$; } foo { $2; } foo
+ ^^
input.y:5.6-32: warning: type clash on default action: <bar> != <> [-Wother]
+ exp: foo { $$; } foo { $2; } foo
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^
input.y:6.6-8: warning: type clash on default action: <bar> != <> [-Wother]
-input.y:7.5: warning: empty rule for typed nonterminal, and no action [-Wother]
+ | foo
+ ^^^
+input.y:7.6-11: warning: empty rule for typed nonterminal, and no action [-Wother]
+ | %empty
+ ^^^^^^
]])
AT_CLEANUP
;
a: INT | INT { } INT { } INT { };
-b: INT | /* empty */;
+b: INT | %empty;
c: INT | INT { $]1[; } INT { $<integer>2; } INT { $<integer>4; };
d: INT | INT { } INT { $]1[; } INT { $<integer>2; };
e: INT | INT { } INT { } INT { $]1[; };
_AT_UNUSED_VALUES_DECLARATIONS])
)
-AT_BISON_CHECK(m4_ifval($2, [ --warnings=midrule-values ])[ input.y], [0], [],
-[[input.y:11.10-32: warning: unset value: $]$[ [-Wother]
-input.y:11.10-32: warning: unused value: $]1[ [-Wother]
-input.y:11.10-32: warning: unused value: $]3[ [-Wother]
-input.y:11.10-32: warning: unused value: $]5[ [-Wother]
-input.y:12.9: warning: empty rule for typed nonterminal, and no action [-Wother]
-]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $$ [-Wmidrule-values]
-input.y:13.26-41: warning: unset value: $$ [-Wmidrule-values]
-]]])[[input.y:13.10-62: warning: unset value: $]$[ [-Wother]
-input.y:13.10-62: warning: unused value: $]3[ [-Wother]
-input.y:13.10-62: warning: unused value: $]5[ [-Wother]
-]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$ [-Wmidrule-values]
-]]])[[input.y:14.10-49: warning: unset value: $]$[ [-Wother]
-input.y:14.10-49: warning: unused value: $]3[ [-Wother]
-input.y:14.10-49: warning: unused value: $]5[ [-Wother]
-input.y:15.10-37: warning: unset value: $]$[ [-Wother]
-input.y:15.10-37: warning: unused value: $]3[ [-Wother]
-input.y:15.10-37: warning: unused value: $]5[ [-Wother]
-input.y:17.10-58: warning: unset value: $]$[ [-Wother]
-input.y:17.10-58: warning: unused value: $]1[ [-Wother]
-]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[ [-Wmidrule-values]
-]]])[[input.y:17.10-58: warning: unused value: $]3[ [-Wother]
-]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]4[ [-Wmidrule-values]
-]]])[[input.y:17.10-58: warning: unused value: $]5[ [-Wother]
-input.y:18.10-72: warning: unset value: $]$[ [-Wother]
-input.y:18.10-72: warning: unused value: $]1[ [-Wother]
-input.y:18.10-72: warning: unused value: $]3[ [-Wother]
-]]m4_ifval($2, [[[input.y:18.10-72: warning: unused value: $]4[ [-Wmidrule-values]
-]]])[[input.y:18.10-72: warning: unused value: $]5[ [-Wother]
-]]m4_ifval($2, [[[input.y:20.10-55: warning: unused value: $]3[ [-Wmidrule-values]
-]]])[[input.y:21.10-68: warning: unset value: $]$[ [-Wother]
-input.y:21.10-68: warning: unused value: $]1[ [-Wother]
-input.y:21.10-68: warning: unused value: $]2[ [-Wother]
-]]m4_ifval($2, [[[input.y:21.10-68: warning: unused value: $]4[ [-Wmidrule-values]
-]]]))])
-
+AT_BISON_CHECK(m4_ifval($2, [--warnings=midrule-values ])[-fcaret input.y],
+ [0], [],
+[[input.y:11.10-32: warning: unset value: $][$ [-Wother]
+ a: INT | INT { } INT { } INT { };
+ ^^^^^^^^^^^^^^^^^^^^^^^
+input.y:11.10-12: warning: unused value: $][1 [-Wother]
+ a: INT | INT { } INT { } INT { };
+ ^^^
+input.y:11.18-20: warning: unused value: $][3 [-Wother]
+ a: INT | INT { } INT { } INT { };
+ ^^^
+input.y:11.26-28: warning: unused value: $][5 [-Wother]
+ a: INT | INT { } INT { } INT { };
+ ^^^
+input.y:12.10-15: warning: empty rule for typed nonterminal, and no action [-Wother]
+ b: INT | %empty;
+ ^^^^^^
+]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $][$ [-Wmidrule-values]
+ c: INT | INT { $][1; } INT { $<integer>2; } INT { $<integer>4; };
+ ^^^^^^^
+input.y:13.26-41: warning: unset value: $][$ [-Wmidrule-values]
+ c: INT | INT { $][1; } INT { $<integer>2; } INT { $<integer>4; };
+ ^^^^^^^^^^^^^^^^
+]]])[[input.y:13.10-62: warning: unset value: $][$ [-Wother]
+ c: INT | INT { $][1; } INT { $<integer>2; } INT { $<integer>4; };
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+input.y:13.22-24: warning: unused value: $][3 [-Wother]
+ c: INT | INT { $][1; } INT { $<integer>2; } INT { $<integer>4; };
+ ^^^
+input.y:13.43-45: warning: unused value: $][5 [-Wother]
+ c: INT | INT { $][1; } INT { $<integer>2; } INT { $<integer>4; };
+ ^^^
+]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $][$ [-Wmidrule-values]
+ d: INT | INT { } INT { $][1; } INT { $<integer>2; };
+ ^^^
+]]])[[input.y:14.10-49: warning: unset value: $][$ [-Wother]
+ d: INT | INT { } INT { $][1; } INT { $<integer>2; };
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+input.y:14.18-20: warning: unused value: $][3 [-Wother]
+ d: INT | INT { } INT { $][1; } INT { $<integer>2; };
+ ^^^
+input.y:14.30-32: warning: unused value: $][5 [-Wother]
+ d: INT | INT { } INT { $][1; } INT { $<integer>2; };
+ ^^^
+input.y:15.10-37: warning: unset value: $][$ [-Wother]
+ e: INT | INT { } INT { } INT { $][1; };
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+input.y:15.18-20: warning: unused value: $][3 [-Wother]
+ e: INT | INT { } INT { } INT { $][1; };
+ ^^^
+input.y:15.27-29: warning: unused value: $][5 [-Wother]
+ e: INT | INT { } INT { } INT { $][1; };
+ ^^^
+input.y:17.10-58: warning: unset value: $][$ [-Wother]
+ g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+input.y:17.10-12: warning: unused value: $][1 [-Wother]
+ g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
+ ^^^
+]]m4_ifval($2, [[[input.y:17.14-29: warning: unused value: $][2 [-Wmidrule-values]
+ g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
+ ^^^^^^^^^^^^^^^^
+]]])[[input.y:17.31-33: warning: unused value: $][3 [-Wother]
+ g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
+ ^^^
+]]m4_ifval($2, [[[input.y:17.35-50: warning: unused value: $][4 [-Wmidrule-values]
+ g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
+ ^^^^^^^^^^^^^^^^
+]]])[[input.y:17.52-54: warning: unused value: $][5 [-Wother]
+ g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
+ ^^^
+input.y:18.10-72: warning: unset value: $][$ [-Wother]
+ h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+input.y:18.10-12: warning: unused value: $][1 [-Wother]
+ h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };
+ ^^^
+input.y:18.31-33: warning: unused value: $][3 [-Wother]
+ h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };
+ ^^^
+]]m4_ifval($2, [[[input.y:18.35-64: warning: unused value: $][4 [-Wmidrule-values]
+ h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+]]])[[input.y:18.66-68: warning: unused value: $][5 [-Wother]
+ h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };
+ ^^^
+]]m4_ifval($2, [[[input.y:20.18-37: warning: unused value: $][3 [-Wmidrule-values]
+ j: INT | INT INT { $<integer>$ = 1; } { $][$ = $][1 + $][2; };
+ ^^^^^^^^^^^^^^^^^^^^
+]]])[[input.y:21.10-68: warning: unset value: $][$ [-Wother]
+ k: INT | INT INT { $<integer>$; } { $<integer>$ = $<integer>3; } { };
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+input.y:21.10-12: warning: unused value: $][1 [-Wother]
+ k: INT | INT INT { $<integer>$; } { $<integer>$ = $<integer>3; } { };
+ ^^^
+input.y:21.14-16: warning: unused value: $][2 [-Wother]
+ k: INT | INT INT { $<integer>$; } { $<integer>$ = $<integer>3; } { };
+ ^^^
+]]m4_ifval($2, [[[input.y:21.35-64: warning: unused value: $][4 [-Wmidrule-values]
+ k: INT | INT INT { $<integer>$; } { $<integer>$ = $<integer>3; } { };
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+]]]))
+])
## --------------- ##
## Unused values. ##
AT_SETUP([Default %printer and %destructor redeclared])
-AT_DATA([[input.y]],
-[[%destructor { destroy ($$); } <*> <*>
-%printer { print ($$); } <*> <*>
-
-%destructor { destroy ($$); } <*>
-%printer { print ($$); } <*>
-
-%destructor { destroy ($$); } <> <>
-%printer { print ($$); } <> <>
+# AT_TEST([*])
+# ------------
+m4_pushdef([AT_TEST],
+[AT_DATA([[input.y]],
+[[%destructor { destroy ($$); } <$1> <$1>
+%printer { print ($$); } <$1> <$1>
-%destructor { destroy ($$); } <>
-%printer { print ($$); } <>
+%destructor { destroy ($$); } <$1>
+%printer { print ($$); } <$1>
%%
-start: ;
-
-%destructor { destroy ($$); } <*>;
-%printer { print ($$); } <*>;
-
-%destructor { destroy ($$); } <>;
-%printer { print ($$); } <>;
+start: %empty;
+
+%destructor { destroy ($$); } <$1>;
+%printer { print ($$); } <$1>;
+]])
+
+AT_BISON_CHECK([-fcaret input.y], [1], [],
+[[input.y:1.13-29: error: %destructor redeclaration for <>
+ %destructor { destroy ($$); } <> <>
+ ^^^^^^^^^^^^^^^^^
+input.y:1.13-29: previous declaration
+ %destructor { destroy ($$); } <> <>
+ ^^^^^^^^^^^^^^^^^
+input.y:2.10-24: error: %printer redeclaration for <>
+ %printer { print ($$); } <> <>
+ ^^^^^^^^^^^^^^^
+input.y:2.10-24: previous declaration
+ %printer { print ($$); } <> <>
+ ^^^^^^^^^^^^^^^
+input.y:4.13-29: error: %destructor redeclaration for <>
+ %destructor { destroy ($$); } <>
+ ^^^^^^^^^^^^^^^^^
+input.y:1.13-29: previous declaration
+ %destructor { destroy ($$); } <> <>
+ ^^^^^^^^^^^^^^^^^
+input.y:5.10-24: error: %printer redeclaration for <>
+ %printer { print ($$); } <>
+ ^^^^^^^^^^^^^^^
+input.y:2.10-24: previous declaration
+ %printer { print ($$); } <> <>
+ ^^^^^^^^^^^^^^^
+input.y:11.13-29: error: %destructor redeclaration for <>
+ %destructor { destroy ($$); } <>;
+ ^^^^^^^^^^^^^^^^^
+input.y:1.13-29: previous declaration
+ %destructor { destroy ($$); } <> <>
+ ^^^^^^^^^^^^^^^^^
+input.y:12.10-24: error: %printer redeclaration for <>
+ %printer { print ($$); } <>;
+ ^^^^^^^^^^^^^^^
+input.y:2.10-24: previous declaration
+ %printer { print ($$); } <> <>
+ ^^^^^^^^^^^^^^^
]])
+])
-AT_BISON_CHECK([input.y], [1], [],
-[[input.y:1.13-29: redeclaration for default tagged %destructor
-input.y:1.13-29: previous declaration
-input.y:2.10-24: redeclaration for default tagged %printer
-input.y:2.10-24: previous declaration
-input.y:4.13-29: redeclaration for default tagged %destructor
-input.y:1.13-29: previous declaration
-input.y:5.10-24: redeclaration for default tagged %printer
-input.y:2.10-24: previous declaration
-input.y:7.13-29: redeclaration for default tagless %destructor
-input.y:7.13-29: previous declaration
-input.y:8.10-24: redeclaration for default tagless %printer
-input.y:8.10-24: previous declaration
-input.y:10.13-29: redeclaration for default tagless %destructor
-input.y:7.13-29: previous declaration
-input.y:11.10-24: redeclaration for default tagless %printer
-input.y:8.10-24: previous declaration
-input.y:17.13-29: redeclaration for default tagged %destructor
-input.y:4.13-29: previous declaration
-input.y:18.10-24: redeclaration for default tagged %printer
-input.y:5.10-24: previous declaration
-input.y:20.13-29: redeclaration for default tagless %destructor
-input.y:10.13-29: previous declaration
-input.y:21.10-24: redeclaration for default tagless %printer
-input.y:11.10-24: previous declaration
-]])
+AT_TEST([], [], [])
+AT_TEST([], [*], [*])
+m4_popdef([AT_TEST])
AT_CLEANUP
%%
-start: ;
+start: %empty;
%destructor { destroy ($$); } <field2> <field1>;
%printer { print ($$); } <field2> <field1>;
]])
AT_BISON_CHECK([input.y], [1], [],
-[[input.y:4.13-29: %destructor redeclaration for <field1>
-input.y:1.13-29: previous declaration
-input.y:4.13-29: %destructor redeclaration for <field1>
-input.y:4.13-29: previous declaration
-input.y:5.10-24: %printer redeclaration for <field2>
-input.y:2.10-24: previous declaration
-input.y:5.10-24: %printer redeclaration for <field2>
-input.y:5.10-24: previous declaration
-input.y:11.13-29: %destructor redeclaration for <field1>
-input.y:4.13-29: previous declaration
-input.y:11.13-29: %destructor redeclaration for <field2>
-input.y:1.13-29: previous declaration
-input.y:12.10-24: %printer redeclaration for <field1>
-input.y:2.10-24: previous declaration
-input.y:12.10-24: %printer redeclaration for <field2>
-input.y:5.10-24: previous declaration
+[[input.y:4.13-29: error: %destructor redeclaration for <field1>
+input.y:1.13-29: previous declaration
+input.y:4.13-29: error: %destructor redeclaration for <field1>
+input.y:1.13-29: previous declaration
+input.y:5.10-24: error: %printer redeclaration for <field2>
+input.y:2.10-24: previous declaration
+input.y:5.10-24: error: %printer redeclaration for <field2>
+input.y:2.10-24: previous declaration
+input.y:11.13-29: error: %destructor redeclaration for <field2>
+input.y:1.13-29: previous declaration
+input.y:11.13-29: error: %destructor redeclaration for <field1>
+input.y:1.13-29: previous declaration
+input.y:12.10-24: error: %printer redeclaration for <field2>
+input.y:2.10-24: previous declaration
+input.y:12.10-24: error: %printer redeclaration for <field1>
+input.y:2.10-24: previous declaration
]])
AT_CLEANUP
-## ----------------------------------------------------- ##
-## Undeclared symbols used for a printer or destructor. ##
-## ----------------------------------------------------- ##
+## ------------------- ##
+## Undefined symbols. ##
+## ------------------- ##
-AT_SETUP([Undeclared symbols used for a printer or destructor])
+AT_SETUP([Undefined symbols])
AT_DATA([[input.y]],
[[%printer {} foo baz
%destructor {} bar
-
+%type <foo> qux
%%
exp: bar;
]])
-AT_BISON_CHECK([input.y], [1], [],
-[[input.y:2.16-18: symbol bar is used, but is not defined as a token and has no rules
+AT_BISON_CHECK([-fcaret input.y], [1], [],
+[[input.y:2.16-18: error: symbol bar is used, but is not defined as a token and has no rules
+ %destructor {} bar
+ ^^^
input.y:1.17-19: warning: symbol baz is used, but is not defined as a token and has no rules [-Wother]
+ %printer {} foo baz
+ ^^^
input.y:1.13-15: warning: symbol foo is used, but is not defined as a token and has no rules [-Wother]
+ %printer {} foo baz
+ ^^^
+input.y:3.13-15: warning: symbol qux is used, but is not defined as a token and has no rules [-Wother]
+ %type <foo> qux
+ ^^^
]])
AT_CLEANUP
AT_SETUP([Useless printers or destructors])
-AT_DATA([[input.y]],
-[[%token <type1> token1
+# AT_TEST([INPUT], [STDERR])
+# --------------------------
+m4_pushdef([AT_TEST],
+[AT_DATA([[input.y]],
+[$1
+])
+AT_BISON_CHECK([input.y], [0], [], [$2
+])])
+
+AT_TEST([[%token <type1> token1
%token <type2> token2
%token <type3> token3
%token <type4> token4
%destructor {} <type7>
%%
-exp: "a";
-]])
-
-AT_BISON_CHECK([input.y], [0], [],
+exp: "a";]],
[[input.y:16.13-19: warning: useless %printer for type <type1> [-Wother]
-input.y:17.16-22: warning: useless %destructor for type <type2> [-Wother]
-]])
+input.y:17.16-22: warning: useless %destructor for type <type2> [-Wother]]])
+# If everybody is typed, <> is useless.
+AT_TEST([[%type <type> exp
+%token <type> a
+%printer {} <> <*>
+%%
+exp: a;]],
+[[input.y:3.13-14: warning: useless %printer for type <> [-Wother]]])
+
+# If nobody is typed, <*> is useless.
+AT_TEST([[%token a
+%printer {} <> <*>
+%%
+exp: a;]],
+[[input.y:2.16-18: warning: useless %printer for type <*> [-Wother]]])
+
+m4_popdef([AT_TEST])
AT_CLEANUP
tagged: { } ;
]])
-AT_BISON_CHECK([input.y], [0], [],
+AT_BISON_CHECK([-fcaret input.y], [0], [],
[[input.y:6.8-45: warning: unset value: $$ [-Wother]
-input.y:6.8-45: warning: unused value: $2 [-Wother]
+ start: end end tagged tagged { $<tag>1; $3; } ;
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+input.y:6.12-14: warning: unused value: $2 [-Wother]
+ start: end end tagged tagged { $<tag>1; $3; } ;
+ ^^^
input.y:7.6-8: warning: unset value: $$ [-Wother]
+ end: { } ;
+ ^^^
]])
AT_DATA([[input.y]],
]])
AT_BISON_CHECK([input.y], [0], [],
-[[input.y:6.8-45: warning: unused value: $4 [-Wother]
+[[input.y:6.23-28: warning: unused value: $4 [-Wother]
input.y:8.9-11: warning: unset value: $$ [-Wother]
]])
end: { } ;
]])
-AT_BISON_CHECK([input.y], [0], [],
+AT_BISON_CHECK([-fcaret input.y], [0], [],
[[input.y:6.8-22: warning: unset value: $$ [-Wother]
-input.y:6.8-22: warning: unused value: $2 [-Wother]
+ start: end end { $1; } ;
+ ^^^^^^^^^^^^^^^
+input.y:6.12-14: warning: unused value: $2 [-Wother]
+ start: end end { $1; } ;
+ ^^^
input.y:7.6-8: warning: unset value: $$ [-Wother]
+ end: { } ;
+ ^^^
]])
AT_CLEANUP
AT_SETUP([Incompatible Aliases])
-AT_DATA([input.y],
-[[%token foo "foo"
-
-%type <bar> foo
-%printer {bar} foo
-%destructor {bar} foo
-%left foo
+m4_pushdef([AT_TEST],
+[AT_DATA([input.y], [$1])
+AT_BISON_CHECK([-fcaret input.y], [1], [], [$2])
+])
-%type <baz> "foo"
-%printer {baz} "foo"
-%destructor {baz} "foo"
-%left "foo"
+# Use the string-alias first to check the order between "first
+# declaration" and second.
+AT_TEST([[%token foo "foo"
+%type <bar> "foo"
+%type <baz> foo
+%%
+exp: foo;
+]],
+[[input.y:3.7-11: error: %type redeclaration for foo
+ %type <baz> foo
+ ^^^^^
+input.y:2.7-11: previous declaration
+ %type <bar> "foo"
+ ^^^^^
+]])
+
+AT_TEST([[%token foo "foo"
+%printer {bar} "foo"
+%printer {baz} foo
+%%
+exp: foo;
+]],
+[[input.y:3.10-14: error: %printer redeclaration for foo
+ %printer {baz} foo
+ ^^^^^
+input.y:2.10-14: previous declaration
+ %printer {bar} "foo"
+ ^^^^^
+]])
+
+AT_TEST([[%token foo "foo"
+%destructor {bar} "foo"
+%destructor {baz} foo
%%
exp: foo;
+]],
+[[input.y:3.13-17: error: %destructor redeclaration for foo
+ %destructor {baz} foo
+ ^^^^^
+input.y:2.13-17: previous declaration
+ %destructor {bar} "foo"
+ ^^^^^
+]])
+
+AT_TEST([[%token foo "foo"
+%left "foo"
+%left foo
+%%
+exp: foo;
+]],
+[[input.y:3.1-5: error: %left redeclaration for foo
+ %left foo
+ ^^^^^
+input.y:2.1-5: previous declaration
+ %left "foo"
+ ^^^^^
]])
-AT_BISON_CHECK([input.y], [1], [],
-[[input.y:8.7-11: %type redeclaration for foo
-input.y:3.7-11: previous declaration
-input.y:10.13-17: %destructor redeclaration for foo
-input.y:5.13-17: previous declaration
-input.y:9.10-14: %printer redeclaration for foo
-input.y:4.10-14: previous declaration
-input.y:11.1-5: %left redeclaration for foo
-input.y:6.1-5: previous declaration
+# This time, declare the alias after its use.
+
+# Precedence/associativity.
+AT_TEST([[%left "foo"
+%left foo
+%token foo "foo"
+%%
+exp: foo;
+]],
+[[input.y:2.1-5: error: %left redeclaration for foo
+ %left foo
+ ^^^^^
+input.y:1.1-5: previous declaration
+ %left "foo"
+ ^^^^^
+]])
+
+# Printer.
+AT_TEST([[%printer {} "foo"
+%printer {} foo
+%token foo "foo"
+%%
+exp: foo;
+]],
+[[input.y:2.10-11: error: %printer redeclaration for foo
+ %printer {} foo
+ ^^
+input.y:1.10-11: previous declaration
+ %printer {} "foo"
+ ^^
+]])
+
+# Destructor.
+AT_TEST([[%destructor {} "foo"
+%destructor {} foo
+%token foo "foo"
+%%
+exp: foo;
+]],
+[[input.y:2.13-14: error: %destructor redeclaration for foo
+ %destructor {} foo
+ ^^
+input.y:1.13-14: previous declaration
+ %destructor {} "foo"
+ ^^
]])
+m4_popdef([AT_TEST])
AT_CLEANUP
AT_BISON_OPTION_PUSHDEFS
AT_DATA([input.y], [])
AT_BISON_CHECK([input.y], [1], [],
-[[input.y:1.1: syntax error, unexpected end of file
+[[input.y:1.1: error: syntax error, unexpected end of file
]])
AT_DATA([input.y],
[{}
])
-AT_BISON_CHECK([input.y], [1], [],
-[[input.y:1.1-2: syntax error, unexpected {...}
+AT_BISON_CHECK([-fcaret input.y], [1], [],
+[[input.y:1.1-2: error: syntax error, unexpected {...}
+ {}
+ ^^
]])
two: '\x000000000000000000000000000000000000000000000000000000000000000000002';
oline: '@' 'o' 'l' 'i' 'n' 'e' '@' '_' '_' 'o' 'l' 'i' 'n' 'e' '_' '_';
-output.or.oline.opt: ;|oline;;|output;;;
+output.or.oline.opt: %empty;|oline;;|output;;;
output: '#' 'o' 'u' 't' 'p' 'u' 't' ' ';
%%
/* Exercise M4 quoting: '@:>@@:>@', @<:@, 2. */
#include "input.h"
int yyparse (void);
-
-int
-main (void)
-{
- return yyparse ();
-}
+]AT_MAIN_DEFINE[
]])
AT_BISON_OPTION_POPDEFS
AT_DATA_GRAMMAR([input.y],
[[%require "$1";
%%
-empty_file:;
+empty_file: %empty;
]])
AT_BISON_CHECK([-o input.c input.y], $2, [], ignore)
AT_CLEANUP
# POSIX Yacc accept periods, but not dashes.
AT_BISON_CHECK([--yacc input.y], [1], [],
-[[input.y:9.8-16: POSIX Yacc forbids dashes in symbol names: WITH-DASH [-Wyacc]
-input.y:18.8-16: POSIX Yacc forbids dashes in symbol names: with-dash [-Wyacc]
-]])
-
-# So warn about them.
-AT_BISON_CHECK([-Wyacc input.y], [], [],
-[[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH [-Wyacc]
-input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash [-Wyacc]
+[[input.y:9.8-16: error: POSIX Yacc forbids dashes in symbol names: WITH-DASH [-Werror=yacc]
+input.y:20.8-16: error: POSIX Yacc forbids dashes in symbol names: with-dash [-Werror=yacc]
]])
# Dashes are fine for GNU Bison.
start: .GOOD GOOD
]])
AT_BISON_CHECK([-o input.c input.y], [1], [],
-[[input.y:10.10: invalid character: '-'
-input.y:11.10-16: invalid identifier: '1NV4L1D'
-input.y:12.10: invalid character: '-'
+[[input.y:10.10: error: invalid character: '-'
+input.y:11.10-16: error: invalid identifier: '1NV4L1D'
+input.y:12.10: error: invalid character: '-'
]])
AT_CLEANUP
]])
AT_BISON_CHECK([redecl.y], [1], [],
-[[redecl.y:10.10-22: user token number 11259375 redeclaration for HEXADECIMAL_1
-redecl.y:9.8-16: previous declaration for DECIMAL_1
-redecl.y:12.10-18: user token number 16702650 redeclaration for DECIMAL_2
-redecl.y:11.10-22: previous declaration for HEXADECIMAL_2
+[[redecl.y:10.10-22: error: user token number 11259375 redeclaration for HEXADECIMAL_1
+redecl.y:9.8-16: previous declaration for DECIMAL_1
+redecl.y:12.10-18: error: user token number 16702650 redeclaration for DECIMAL_2
+redecl.y:11.10-22: previous declaration for HEXADECIMAL_2
]])
AT_DATA_GRAMMAR([too-large.y],
]])
AT_BISON_CHECK([too-large.y], [1], [],
-[[too-large.y:9.22-42: integer out of range: '999999999999999999999'
-too-large.y:10.24-44: integer out of range: '0xFFFFFFFFFFFFFFFFFFF'
+[[too-large.y:9.22-42: error: integer out of range: '999999999999999999999'
+too-large.y:10.24-44: error: integer out of range: '0xFFFFFFFFFFFFFFFFFFF'
]])
AT_CLEANUP
%%
-start: ;
+start: %empty;
// Used to report a syntax error because it didn't see any kind of symbol
// identifier.
%destructor { free ($$)
]])
-AT_BISON_CHECK([-o input.c input.y], 1, [],
-[[input.y:1.10-2.0: missing '"' at end of line
-input.y:4.10-5.0: missing "'" at end of line
-input.y:14.11-15.0: missing "'" at end of line
-input.y:16.11-17.0: missing '"' at end of line
-input.y:19.13-20.0: missing '}' at end of file
-input.y:20.1: syntax error, unexpected end of file
+AT_BISON_CHECK([-fcaret -o input.c input.y], 1, [],
+[[input.y:1.10-2.0: error: missing '"' at end of line
+ %token A "a
+ ^^
+input.y:4.10-5.0: error: missing "'" at end of line
+ %token C '1
+ ^^
+input.y:14.11-15.0: error: missing "'" at end of line
+ %type <f> 'a
+ ^^
+input.y:16.11-17.0: error: missing '"' at end of line
+ %type <f> "a
+ ^^
+input.y:19.13-20.0: error: missing '}' at end of file
+ %destructor { free ($$)
+ ^^^^^^^^^^^
+input.y:20.1: error: syntax error, unexpected end of file
]])
AT_CLEANUP
AT_DATA([input.y],
[[%%
-false_start: ;
+false_start: %empty;
start: false_start ;
%start start;
]])
AT_DATA([input.y],
[[%%
start: PREC %prec PREC ;
-PREC: ;
+PREC: %empty;
]])
AT_BISON_CHECK([input.y], [1], [],
-[[input.y:3.1-4: rule given for PREC, which is a token
+[[input.y:3.1-4: error: rule given for PREC, which is a token
]])
AT_CLEANUP
%code bad {}
%code format {}
%%
-start: ;
+start: %empty;
]])
AT_BISON_CHECK([[input-c.y]], [[1]], [],
-[[input-c.y:1.7: %code qualifier 'q' is not used
-input-c.y:2.7-9: %code qualifier 'bad' is not used
-input-c.y:3.7-9: %code qualifier 'bad' is not used
-input-c.y:4.7-12: %code qualifier 'format' is not used
+[[input-c.y:1.7: error: %code qualifier 'q' is not used
+input-c.y:2.7-9: error: %code qualifier 'bad' is not used
+input-c.y:3.7-9: error: %code qualifier 'bad' is not used
+input-c.y:4.7-12: error: %code qualifier 'format' is not used
]])
AT_DATA([input-c-glr.y],
%code bad {}
%code bad {}
%%
-start: ;
+start: %empty;
]])
AT_BISON_CHECK([[input-c-glr.y]], [[1]], [],
-[[input-c-glr.y:1.7: %code qualifier 'q' is not used
-input-c-glr.y:2.7-9: %code qualifier 'bad' is not used
-input-c-glr.y:3.8-10: %code qualifier 'bad' is not used
+[[input-c-glr.y:1.7: error: %code qualifier 'q' is not used
+input-c-glr.y:2.7-9: error: %code qualifier 'bad' is not used
+input-c-glr.y:3.8-10: error: %code qualifier 'bad' is not used
]])
AT_DATA([input-c++.y],
%code bad {}
%code q {}
%%
-start: ;
+start: %empty;
]])
AT_BISON_CHECK([[input-c++.y]], [[1]], [],
-[[input-c++.y:1.7: %code qualifier 'q' is not used
-input-c++.y:2.7-9: %code qualifier 'bad' is not used
-input-c++.y:3.8: %code qualifier 'q' is not used
+[[input-c++.y:1.7: error: %code qualifier 'q' is not used
+input-c++.y:2.7-9: error: %code qualifier 'bad' is not used
+input-c++.y:3.8: error: %code qualifier 'q' is not used
]])
AT_DATA([input-c++-glr.y],
%code q {}
%code q {}
%%
-start: ;
+start: %empty;
]])
AT_BISON_CHECK([[input-c++-glr.y]], [[1]], [],
-[[input-c++-glr.y:1.7-9: %code qualifier 'bad' is not used
-input-c++-glr.y:2.7: %code qualifier 'q' is not used
-input-c++-glr.y:3.7: %code qualifier 'q' is not used
+[[input-c++-glr.y:1.7-9: error: %code qualifier 'bad' is not used
+input-c++-glr.y:2.7: error: %code qualifier 'q' is not used
+input-c++-glr.y:3.7: error: %code qualifier 'q' is not used
]])
AT_DATA([special-char-@@.y],
%code q {}
%code q {}
%%
-start: ;
+start: %empty;
]])
AT_BISON_CHECK([[special-char-@@.y]], [[1]], [],
-[[special-char-@@.y:1.7-9: %code qualifier 'bad' is not used
-special-char-@@.y:2.7: %code qualifier 'q' is not used
-special-char-@@.y:3.7: %code qualifier 'q' is not used
+[[special-char-@@.y:1.7-9: error: %code qualifier 'bad' is not used
+special-char-@@.y:2.7: error: %code qualifier 'q' is not used
+special-char-@@.y:3.7: error: %code qualifier 'q' is not used
]])
AT_DATA([special-char-@:>@.y],
%code q {}
%code q {}
%%
-start: ;
+start: %empty;
]])
AT_BISON_CHECK([[special-char-@:>@.y]], [[1]], [],
-[[special-char-@:>@.y:1.7-9: %code qualifier 'bad' is not used
-special-char-@:>@.y:2.7: %code qualifier 'q' is not used
-special-char-@:>@.y:3.7: %code qualifier 'q' is not used
+[[special-char-@:>@.y:1.7-9: error: %code qualifier 'bad' is not used
+special-char-@:>@.y:2.7: error: %code qualifier 'q' is not used
+special-char-@:>@.y:3.7: error: %code qualifier 'q' is not used
]])
AT_CLEANUP
+## ---------------- ##
+## Multiple %code. ##
+## ---------------- ##
+
+AT_SETUP([Multiple %code])
+
+# Make sure that repeated arguments to %code are separated by
+# end-of-lines. At some point, a missing eol would leave synclines
+# appended to the previous value. Here, we use CPP directive to
+# introduce dependency on the absence/presence of the eol.
+AT_BISON_OPTION_PUSHDEFS
+
+AT_DATA([input.y],
+[[%code {#include <assert.h>}
+%code {#define A B}
+%code {#define B C}
+%code {#define C D}
+%code {#define D 42}
+%code {
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
+}
+%%
+start: %empty;
+%%
+]AT_YYERROR_DEFINE[
+]AT_YYLEX_DEFINE[
+int main (void)
+{
+ assert (A == 42);
+ return 0;
+}
+]])
+AT_FULL_COMPILE([input])
+AT_PARSER_CHECK([./input])
+
+AT_BISON_OPTION_POPDEFS
+AT_CLEANUP()
+
## ---------------- ##
## %define errors. ##
## ---------------- ##
%define special1 "@:>@"
%define special2 "@<:@"
%%
-start: ;
+start: %empty;
]])
AT_BISON_CHECK([[input-redefined.y]], [[1]], [],
-[[input-redefined.y:2.9-11: %define variable 'var' redefined
-input-redefined.y:1.9-11: previous definition
-input-redefined.y:3.10-12: %define variable 'var' redefined
-input-redefined.y:2.9-11: previous definition
+[[input-redefined.y:2.9-11: error: %define variable 'var' redefined
+input-redefined.y:1.9-11: previous definition
+input-redefined.y:3.10-12: error: %define variable 'var' redefined
+input-redefined.y:2.9-11: previous definition
]])
AT_DATA([input-unused.y],
[[%define var "value"
%%
-start: ;
+start: %empty;
]])
AT_BISON_CHECK([[input-unused.y]], [[1]], [],
-[[input-unused.y:1.9-11: %define variable 'var' is not used
+[[input-unused.y:1.9-11: error: %define variable 'var' is not used
]])
AT_CLEANUP
AT_DATA([[input.y]],
[[%define var-dfg "gram"
%%
-start: ;
+start: %empty;
]])
AT_BISON_CHECK([[-Dvar-dd=cmd-d1 -Dvar-dd=cmd-d2 \
-Fvar-ff=cmd-f1 -Fvar-ff=cmd-f2 \
AT_DATA([[input-dg.y]],
[[%define var "gram"
%%
-start: ;
+start: %empty;
]])
AT_BISON_CHECK([[-Dvar=cmd-d input-dg.y]], [[1]], [],
-[[input-dg.y:1.9-11: %define variable 'var' redefined
-<command line>:2: previous definition
+[[input-dg.y:1.9-11: error: %define variable 'var' redefined
+<command line>:2: previous definition
+]])
+
+AT_DATA([[input-dg.y]],
+[[%define var "gram"
+%%
+start: %empty;
+]])
+AT_BISON_CHECK([[-fcaret -Dvar=cmd-d input-dg.y]], [[1]], [],
+[[input-dg.y:1.9-11: error: %define variable 'var' redefined
+ %define var "gram"
+ ^^^
+<command line>:3: previous definition
]])
AT_DATA([[input-unused.y]],
[[%%
-start: ;
+start: %empty;
]])
AT_BISON_CHECK([[-Dunused-d -Funused-f input-unused.y]], [[1]], [],
-[[<command line>:2: %define variable 'unused-d' is not used
-<command line>:3: %define variable 'unused-f' is not used
+[[<command line>:2: error: %define variable 'unused-d' is not used
+<command line>:3: error: %define variable 'unused-f' is not used
]])
AT_CLEANUP
## %define Boolean variables. ##
## --------------------------- ##
-AT_SETUP([[%define Boolean variables]])
+AT_SETUP([["%define" Boolean variables]])
AT_DATA([Input.y],
[[%language "Java"
-%define public "maybe"
-%define parser_class_name "Input"
+%define public maybe
+%define parser_class_name {Input}
%%
-start: ;
+start: %empty;
]])
AT_BISON_CHECK([[Input.y]], [1], [],
-[[Input.y:2.9-14: invalid value for %define Boolean variable 'public'
+[[Input.y:2.9-14: error: invalid value for %define Boolean variable 'public'
]])
AT_CLEANUP
## ------------------------ ##
-## %define enum variables. ##
+## %define code variables. ##
## ------------------------ ##
-AT_SETUP([[%define enum variables]])
+AT_SETUP([["%define" code variables]])
-# Front-end.
-AT_DATA([[input.y]],
-[[%define lr.default-reductions bogus
+m4_pushdef([AT_TEST],
+[AT_DATA([input.yy],
+[[%skeleton "lalr1.cc" %locations
+%define api.location.type ]$1[quux]$2[
+%define api.namespace ]$1[quux]$2[
+%define api.prefix ]$1[quux]$2[
+%define api.token.prefix ]$1[quux]$2[
+%token TOK // Otherwise api.token.prefix is unused.
%%
-start: ;
-]])
-AT_BISON_CHECK([[input.y]], [[1]], [[]],
-[[input.y:1.9-29: invalid value for %define variable 'lr.default-reductions': 'bogus'
-input.y:1.9-29: accepted value: 'most'
-input.y:1.9-29: accepted value: 'consistent'
-input.y:1.9-29: accepted value: 'accepting'
+start: TOK;
]])
-# Back-end.
-AT_DATA([[input.y]],
-[[%define api.push-pull neither
-%%
-start: ;
-]])
-AT_BISON_CHECK([[input.y]], [1], [],
-[[input.y:1.9-21: invalid value for %define variable 'api.push-pull': 'neither'
-input.y:1.9-21: accepted value: 'pull'
-input.y:1.9-21: accepted value: 'push'
-input.y:1.9-21: accepted value: 'both'
+AT_BISON_CHECK([[input.yy]], [0], [],
+[[input.yy:2.9-25: warning: %define variable 'api.location.type' requires '{...}' values [-Wdeprecated]
+input.yy:4.9-18: warning: %define variable 'api.prefix' requires '{...}' values [-Wdeprecated]
+input.yy:5.9-24: warning: %define variable 'api.token.prefix' requires '{...}' values [-Wdeprecated]
+input.yy:3.9-21: warning: %define variable 'api.namespace' requires '{...}' values [-Wdeprecated]
]])
+])
+
+AT_TEST([], [])
+AT_TEST(["], ["])
+m4_popdef([AT_TEST])
AT_CLEANUP
-## -------------------------------- ##
-## %define backward compatibility. ##
-## -------------------------------- ##
-AT_SETUP([[%define backward compatibility]])
+## --------------------------- ##
+## %define keyword variables. ##
+## --------------------------- ##
-# The error messages tell us whether underscores in these variables are
-# being converted to dashes.
+AT_SETUP([["%define" keyword variables]])
-AT_DATA([[input.y]],
-[[%define api.push_pull "neither"
+m4_pushdef([AT_TEST],
+[AT_DATA([input.y],
+[[%define api.pure ]$1[true]$2[
+%define api.push-pull ]$1[both]$2[
+%define lr.default-reduction ]$1[most]$2[
+%define lr.keep-unreachable-state ]$1[true]$2[
+%define lr.type ]$1[lalr]$2[
%%
-start: ;
+exp: %empty
]])
-AT_BISON_CHECK([[input.y]], [1], [],
-[[input.y:1.9-21: invalid value for %define variable 'api.push-pull': 'neither'
-input.y:1.9-21: accepted value: 'pull'
-input.y:1.9-21: accepted value: 'push'
-input.y:1.9-21: accepted value: 'both'
+
+AT_BISON_CHECK([[input.y]], [0], [],
+[[input.y:5.9-15: warning: %define variable 'lr.type' requires keyword values [-Wdeprecated]
+input.y:3.9-28: warning: %define variable 'lr.default-reduction' requires keyword values [-Wdeprecated]
+input.y:4.9-33: warning: %define variable 'lr.keep-unreachable-state' requires keyword values [-Wdeprecated]
+input.y:2.9-21: warning: %define variable 'api.push-pull' requires keyword values [-Wdeprecated]
+input.y:1.9-16: warning: %define variable 'api.pure' requires keyword values [-Wdeprecated]
]])
+])
+
+AT_TEST(["], ["])
+AT_TEST([{], [}])
+m4_popdef([AT_TEST])
+AT_CLEANUP
+
+
+## ------------------------ ##
+## %define enum variables. ##
+## ------------------------ ##
+
+AT_SETUP([["%define" enum variables]])
+
+# Check errors from the front-end, and the back-end. Since the
+# front-end quits before calling the back-end, these tests cannot be
+# fused.
+
+# Front-end.
AT_DATA([[input.y]],
-[[%define lr.keep_unreachable_states maybe
+[[%define lr.default-reduction bogus
%%
-start: ;
+start: %empty;
]])
-AT_BISON_CHECK([[input.y]], [1], [],
-[[input.y:1.9-34: invalid value for %define Boolean variable 'lr.keep-unreachable-states'
+AT_BISON_CHECK([[-fcaret input.y]], [[1]], [[]],
+[[input.y:1.9-28: error: invalid value for %define variable 'lr.default-reduction': 'bogus'
+ %define lr.default-reduction bogus
+ ^^^^^^^^^^^^^^^^^^^^
+input.y:1.9-28: accepted value: 'most'
+input.y:1.9-28: accepted value: 'consistent'
+input.y:1.9-28: accepted value: 'accepting'
]])
+# Back-end.
AT_DATA([[input.y]],
-[[%define namespace "foo"
-%define api.namespace "foo"
+[[%define api.push-pull neither
%%
-start: ;
+start: %empty;
]])
-AT_BISON_CHECK([[input.y]], [1], [],
-[[input.y:2.9-21: %define variable 'api.namespace' redefined
-input.y:1.9-17: previous definition
+AT_BISON_CHECK([[-fcaret input.y]], [[1]], [[]],
+[[input.y:1.9-21: error: invalid value for %define variable 'api.push-pull': 'neither'
+ %define api.push-pull neither
+ ^^^^^^^^^^^^^
+input.y:1.9-21: accepted value: 'pull'
+input.y:1.9-21: accepted value: 'push'
+input.y:1.9-21: accepted value: 'both'
]])
+AT_CLEANUP
+
+## -------------------------------- ##
+## %define backward compatibility. ##
+## -------------------------------- ##
+
+AT_SETUP([["%define" backward compatibility]])
+
+# The error messages tell us whether the variables are properly updated.
AT_DATA([[input.y]],
-[[%define foo_bar "baz"
+[[%define api.push_pull both
+%define lr.keep_unreachable_states maybe
+%define namespace "foo"
+%define api.namespace {foo}
+%define variant
%%
-start: ;
-]])
-AT_BISON_CHECK([[input.y]], [[1]], [],
-[[input.y:1.9-15: %define variable 'foo_bar' is not used
+start: %empty;
+]])
+AT_BISON_CHECK([[-fcaret input.y]], [1], [],
+[[input.y:1.9-21: warning: deprecated directive, use '%define api.push-pull both' [-Wdeprecated]
+ %define api.push_pull both
+ ^^^^^^^^^^^^^
+input.y:2.9-34: warning: deprecated directive, use '%define lr.keep-unreachable-state maybe' [-Wdeprecated]
+ %define lr.keep_unreachable_states maybe
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^
+input.y:3.9-17: warning: deprecated directive, use '%define api.namespace foo' [-Wdeprecated]
+ %define namespace "foo"
+ ^^^^^^^^^
+input.y:4.9-21: error: %define variable 'api.namespace' redefined
+ %define api.namespace {foo}
+ ^^^^^^^^^^^^^
+input.y:3.9-17: previous definition
+ %define namespace "foo"
+ ^^^^^^^^^
+input.y:5.9-15: warning: deprecated directive, use '%define api.value.type variant' [-Wdeprecated]
+ %define variant
+ ^^^^^^^
]])
AT_CLEANUP
# AT_CHECK_API_PURE(DECLS, VALUE)
# -------------------------------
-# Make sure Bison reports that `%define api.pure VALUE' is unused when DECLS
+# Make sure Bison reports that '%define api.pure VALUE' is unused when DECLS
# are specified.
m4_define([AT_CHECK_API_PURE],
[
[[%define api.pure ]$2[
]$1[
%%
-start: ;
+start: %empty;
]])
AT_BISON_CHECK([[input.y]], [[1]], [],
-[[input.y:1.9-16: %define variable 'api.pure' is not used
+[[input.y:1.9-16: error: %define variable 'api.pure' is not used
]])
])
-AT_CHECK_API_PURE([[%language "c++" %defines]], [[]])
-AT_CHECK_API_PURE([[%language "c++" %defines]], [[false]])
-AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[""]])
-AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[false]])
+AT_CHECK_API_PURE([[%language "c++"]], [[]])
+AT_CHECK_API_PURE([[%language "c++"]], [[false]])
+AT_CHECK_API_PURE([[%language "c++" %glr-parser]], [[""]])
+AT_CHECK_API_PURE([[%language "c++" %glr-parser]], [[false]])
AT_CHECK_API_PURE([[%language "java"]], [[true]])
AT_CHECK_API_PURE([[%language "java"]], [[false]])
AT_DATA([[input.y]],
[[%language "C++"
%defines
-%define api.namespace "]$1["
+%define api.namespace {]$1[}
%%
-start: ;
+start: %empty;
]])
AT_BISON_CHECK([[input.y]], [1], [],
[m4_foreach([b4_arg], m4_dquote(m4_shift($@)),
-[[input.y:3.9-21: ]b4_arg[
+[[input.y:3.9-21: error: ]b4_arg[
]])])
])
AT_CHECK_NAMESPACE_ERROR([[]],
[[namespace reference is empty]])
-AT_CHECK_NAMESPACE_ERROR([[ ]],
+AT_CHECK_NAMESPACE_ERROR([[ @tb@@tb@ @tb@ @tb@]],
[[namespace reference is empty]])
AT_CHECK_NAMESPACE_ERROR([[foo::::bar]],
[[namespace reference has consecutive "::"]])
-AT_CHECK_NAMESPACE_ERROR([[foo:: ::bar]],
+AT_CHECK_NAMESPACE_ERROR([[foo:: @tb@::bar]],
[[namespace reference has consecutive "::"]])
AT_CHECK_NAMESPACE_ERROR([[::::bar]],
[[namespace reference has consecutive "::"]])
AT_CHECK_NAMESPACE_ERROR([[:: ::bar]],
[[namespace reference has consecutive "::"]])
-AT_CHECK_NAMESPACE_ERROR([[foo::bar:: ::]],
+AT_CHECK_NAMESPACE_ERROR([[foo::bar::@tb@::]],
[[namespace reference has consecutive "::"]],
[[namespace reference has a trailing "::"]])
AT_CHECK_NAMESPACE_ERROR([[foo::bar::]],
[[namespace reference has a trailing "::"]])
-AT_CHECK_NAMESPACE_ERROR([[foo::bar:: ]],
+AT_CHECK_NAMESPACE_ERROR([[foo::bar:: @tb@]],
[[namespace reference has a trailing "::"]])
AT_CHECK_NAMESPACE_ERROR([[::]],
[[namespace reference has a trailing "::"]])
start: '';
start: '
]])
-AT_CHECK([[perl -e "print 'start: \'';" >> empty.y || exit 77]])
+AT_CHECK([[$PERL -e "print 'start: \'';" >> empty.y || exit 77]])
-AT_BISON_CHECK([empty.y], [1], [],
+AT_BISON_CHECK([-fcaret empty.y], [1], [],
[[empty.y:2.8-9: warning: empty character literal [-Wother]
+ start: '';
+ ^^
+empty.y:3.8-4.0: error: missing "'" at end of line
+ start: '
+ ^
empty.y:3.8-4.0: warning: empty character literal [-Wother]
-empty.y:3.8-4.0: missing "'" at end of line
+ start: '
+ ^
+empty.y:4.8: error: missing "'" at end of file
+ start: '
+ ^
empty.y:4.8: warning: empty character literal [-Wother]
-empty.y:4.8: missing "'" at end of file
+ start: '
+ ^
]])
AT_DATA([two.y],
start: 'ab';
start: 'ab
]])
-AT_CHECK([[perl -e "print 'start: \'ab';" >> two.y || exit 77]])
+AT_CHECK([[$PERL -e "print 'start: \'ab';" >> two.y || exit 77]])
AT_BISON_CHECK([two.y], [1], [],
[[two.y:2.8-11: warning: extra characters in character literal [-Wother]
+two.y:3.8-4.0: error: missing "'" at end of line
two.y:3.8-4.0: warning: extra characters in character literal [-Wother]
-two.y:3.8-4.0: missing "'" at end of line
+two.y:4.8-10: error: missing "'" at end of file
two.y:4.8-10: warning: extra characters in character literal [-Wother]
-two.y:4.8-10: missing "'" at end of file
]])
AT_DATA([three.y],
start: 'abc';
start: 'abc
]])
-AT_CHECK([[perl -e "print 'start: \'abc';" >> three.y || exit 77]])
+AT_CHECK([[$PERL -e "print 'start: \'abc';" >> three.y || exit 77]])
AT_BISON_CHECK([three.y], [1], [],
[[three.y:2.8-12: warning: extra characters in character literal [-Wother]
+three.y:3.8-4.0: error: missing "'" at end of line
three.y:3.8-4.0: warning: extra characters in character literal [-Wother]
-three.y:3.8-4.0: missing "'" at end of line
+three.y:4.8-11: error: missing "'" at end of file
three.y:4.8-11: warning: extra characters in character literal [-Wother]
-three.y:4.8-11: missing "'" at end of file
]])
AT_CLEANUP
# Beside we cannot even expect "echo '\0'" to output two characters
# (well three with \n): at least Bash 3.2 converts the two-character
# sequence "\0" into a single NUL character.
-AT_CHECK([[perl -e 'print "start: \"\\\t\\\f\\\0\\\1\" ;";' >> input.y \
+AT_CHECK([[$PERL -e 'print "start: \"\\\t\\\f\\\0\\\1\" ;";' >> input.y \
|| exit 77]])
AT_BISON_CHECK([input.y], [1], [],
-[[input.y:2.9-12: invalid number after \-escape: 777
+[[input.y:2.9-12: error: invalid number after \-escape: 777
input.y:2.8-13: warning: empty character literal [-Wother]
-input.y:2.16-17: invalid number after \-escape: 0
+input.y:2.16-17: error: invalid number after \-escape: 0
input.y:2.15-18: warning: empty character literal [-Wother]
-input.y:2.21-25: invalid number after \-escape: xfff
+input.y:2.21-25: error: invalid number after \-escape: xfff
input.y:2.20-26: warning: empty character literal [-Wother]
-input.y:2.29-31: invalid number after \-escape: x0
+input.y:2.29-31: error: invalid number after \-escape: x0
input.y:2.28-32: warning: empty character literal [-Wother]
-input.y:3.9-14: invalid number after \-escape: uffff
+input.y:3.9-14: error: invalid number after \-escape: uffff
input.y:3.8-15: warning: empty character literal [-Wother]
-input.y:3.18-23: invalid number after \-escape: u0000
+input.y:3.18-23: error: invalid number after \-escape: u0000
input.y:3.17-24: warning: empty character literal [-Wother]
-input.y:3.27-36: invalid number after \-escape: Uffffffff
+input.y:3.27-36: error: invalid number after \-escape: Uffffffff
input.y:3.26-37: warning: empty character literal [-Wother]
-input.y:3.40-49: invalid number after \-escape: U00000000
+input.y:3.40-49: error: invalid number after \-escape: U00000000
input.y:3.39-50: warning: empty character literal [-Wother]
-input.y:4.9-10: invalid character after \-escape: ' '
+input.y:4.9-10: error: invalid character after \-escape: ' '
input.y:4.8-11: warning: empty character literal [-Wother]
-input.y:4.14-15: invalid character after \-escape: A
+input.y:4.14-15: error: invalid character after \-escape: A
input.y:4.13-16: warning: empty character literal [-Wother]
-input.y:5.9-16: invalid character after \-escape: \t
-input.y:5.17: invalid character after \-escape: \f
-input.y:5.18: invalid character after \-escape: \0
-input.y:5.19: invalid character after \-escape: \001
+input.y:5.9-16: error: invalid character after \-escape: \t
+input.y:5.17: error: invalid character after \-escape: \f
+input.y:5.18: error: invalid character after \-escape: \0
+input.y:5.19: error: invalid character after \-escape: \001
]])
AT_CLEANUP
AT_DATA([[input.y]],
[[%%
-start: ;
+start: %empty;
]])
# parse.lac.* options are useless if LAC isn't actually activated.
AT_BISON_CHECK([[-Dparse.lac.es-capacity-initial=1 input.y]],
[[1]], [],
-[[<command line>:2: %define variable 'parse.lac.es-capacity-initial' is not used
+[[<command line>:2: error: %define variable 'parse.lac.es-capacity-initial' is not used
]])
AT_BISON_CHECK([[-Dparse.lac.memory-trace=full input.y]],
[[1]], [],
-[[<command line>:2: %define variable 'parse.lac.memory-trace' is not used
+[[<command line>:2: error: %define variable 'parse.lac.memory-trace' is not used
]])
AT_CLEANUP
-## --------------------------------------------- ##
-## -Werror is not affected by -Wnone and -Wall. ##
-## --------------------------------------------- ##
+## ---------------------- ##
+## -Werror combinations. ##
+## ---------------------- ##
-AT_SETUP([[-Werror is not affected by -Wnone and -Wall]])
+AT_SETUP([[-Werror combinations]])
AT_DATA([[input.y]],
[[%%
-foo-bar: ;
+a: '0' { $$ = $; };
]])
# -Werror is not enabled by -Wall or equivalent.
AT_BISON_CHECK([[-Wall input.y]], [[0]], [[]],
-[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]
+[[input.y:2.15: warning: stray '$' [-Wother]
]])
AT_BISON_CHECK([[-W input.y]], [[0]], [[]],
-[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]
+[[input.y:2.15: warning: stray '$' [-Wother]
]])
AT_BISON_CHECK([[-Wno-none input.y]], [[0]], [[]],
-[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]
+[[input.y:2.15: warning: stray '$' [-Wother]
]])
# -Werror is not disabled by -Wnone or equivalent.
-AT_BISON_CHECK([[-Werror,none,yacc input.y]], [[1]], [[]], [[stderr]])
-AT_CHECK([[sed 's/^.*bison:/bison:/' stderr]], [[0]],
-[[bison: warnings being treated as errors
-input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]
+AT_BISON_CHECK([[-Werror,none,other input.y]], [[1]], [[]],
+[[input.y:2.15: error: stray '$' [-Werror=other]
+]])
+AT_BISON_CHECK([[-Werror,no-all,other input.y]], [[1]], [[]],
+[[input.y:2.15: error: stray '$' [-Werror=other]
+]])
+
+# Check that -Wno-error keeps warnings enabled, but non fatal.
+AT_BISON_CHECK([[-Werror -Wno-error=other input.y]], [[0]], [[]],
+[[input.y:2.15: warning: stray '$' [-Wother]
+]])
+
+AT_BISON_CHECK([[-Wno-error=other -Werror input.y]], [[0]], [[]],
+[[input.y:2.15: warning: stray '$' [-Wother]
]])
-[mv stderr experr]
-AT_BISON_CHECK([[-Werror,no-all,yacc input.y]], [[1]], [[]], [[experr]])
+
+AT_BISON_CHECK([[-Werror=other -Wno-other input.y]], [[0]], [[]],
+[[]])
AT_CLEANUP
## %name-prefix and %define api.prefix are incompatible. ##
## ------------------------------------------------------ ##
-AT_SETUP([[%name-prefix and %define api.prefix are incompatible]])
+AT_SETUP([[%name-prefix and api.prefix are incompatible]])
# AT_TEST(DIRECTIVES, OPTIONS, ERROR-LOCATION)
# --------------------------------------------
[AT_DATA([[input.y]],
[[$1
%%
-exp:;
+exp: %empty;
]])
AT_BISON_CHECK([[$2 input.y]], [[1]], [[]],
-[[$3: '%name-prefix' and '%define api.prefix' cannot be used together
+[[$3: error: '%name-prefix' and '%define api.prefix' cannot be used together
]])
])
-AT_TEST([%define api.prefix foo %name-prefix "bar"], [], [input.y:1.9-18])
-AT_TEST([], [-Dapi.prefix=foo -p bar], [<command line>:2])
-AT_TEST([%name-prefix "bar"], [-Dapi.prefix=foo], [<command line>:2])
-AT_TEST([%define api.prefix foo], [-p bar], [input.y:1.9-18])
+AT_TEST([%define api.prefix {foo} %name-prefix "bar"], [], [input.y:1.9-18])
+AT_TEST([], [-Dapi.prefix={foo} -p bar], [<command line>:2])
+AT_TEST([%name-prefix "bar"], [-Dapi.prefix={foo}], [<command line>:2])
+AT_TEST([%define api.prefix {foo}], [-p bar], [input.y:1.9-18])
m4_popdef([AT_TEST])
AT_CLEANUP
+
+
+## ----------------------- ##
+## Redefined %union name. ##
+## ----------------------- ##
+
+AT_SETUP([[Redefined %union name]])
+
+# AT_TEST(DIRECTIVES, ERROR)
+# --------------------------
+m4_pushdef([AT_TEST],
+[AT_DATA([[input.y]],
+[$1
+%%
+exp: %empty;
+])
+
+AT_BISON_CHECK([[input.y]], [[1]], [[]],
+[$2])
+])
+
+AT_TEST([[%union foo {};
+%union {};
+%union foo {};
+%define api.value.union.name foo]],
+[[input.y:3.8-10: error: %define variable 'api.value.union.name' redefined
+input.y:1.8-10: previous definition
+input.y:4.9-28: error: %define variable 'api.value.union.name' redefined
+input.y:3.8-10: previous definition
+]])
+
+AT_TEST([[%define api.value.union.name {foo}]],
+[[input.y:1.9-28: error: %define variable 'api.value.union.name' requires keyword values
+input.y:1.9-28: error: %define variable 'api.value.union.name' is not used
+]])
+
+AT_TEST([[%define api.value.union.name "foo"]],
+[[input.y:1.9-28: error: %define variable 'api.value.union.name' requires keyword values
+input.y:1.9-28: error: %define variable 'api.value.union.name' is not used
+]])
+
+m4_popdef([AT_TEST])
+AT_CLEANUP
+
+
+
+
+## -------------- ##
+## Stray $ or @. ##
+## -------------- ##
+
+AT_SETUP([[Stray $ or @]])
+
+# Give %printer and %destructor "<*> exp TOK" instead of "<*>" to
+# check that the warnings are reported once, not three times.
+
+AT_DATA_GRAMMAR([[input.y]],
+[[%type <TYPE> exp
+%token <TYPE> TOK TOK2
+%destructor { $%; @%; } <*> exp TOK;
+%initial-action { $%; @%; };
+%printer { $%; @%; } <*> exp TOK;
+%{ $ @ %} // Should not warn.
+%%
+exp: TOK { $%; @%; $$ = $1; };
+%%
+$ @ // Should not warn.
+]])
+
+AT_BISON_CHECK([[-Wall input.y]], 0, [],
+[[input.y:11.19: warning: stray '$' [-Wother]
+input.y:11.23: warning: stray '@' [-Wother]
+input.y:12.19: warning: stray '$' [-Wother]
+input.y:12.23: warning: stray '@' [-Wother]
+input.y:13.19: warning: stray '$' [-Wother]
+input.y:13.23: warning: stray '@' [-Wother]
+input.y:16.19: warning: stray '$' [-Wother]
+input.y:16.23: warning: stray '@' [-Wother]
+]])
+
+AT_CLEANUP
+
+
+
+## ---------------- ##
+## Code injection. ##
+## ---------------- ##
+
+
+AT_SETUP([[Code injection]])
+
+m4_pattern_allow([^m4_errprintn$])
+
+# AT_TEST([MACRO])
+# ----------------
+# Try to have MACRO be run by bison.
+m4_pushdef([AT_TEST],
+[AT_DATA([[input.y]],
+[[%type <$1(DEAD %type)> exp
+%token <$1(DEAD %token)> a
+%token b
+%initial-action
+{
+ $$;
+ $<$1(DEAD %initial-action)>$
+};
+%printer
+{
+ $$
+ $<$1(DEAD %printer)>$
+} <> <*>;
+%lex-param
+{
+ $1(DEAD %lex-param)
+};
+%parse-param
+{
+ $1(DEAD %parse-param)
+};
+%%
+exp:
+ a a[name] b
+ {
+ $$;
+ $][1;
+ $<$1(DEAD action 1)>$
+ $<$1(DEAD action 2)>1
+ $<$1(DEAD action 3)>name
+ $<$1(DEAD action 4)>0
+ ;
+ };
+]])
+
+# FIXME: Provide a means to iterate over all the skeletons.
+AT_BISON_CHECK([[-d input.y]])
+AT_BISON_CHECK([[-d -S glr.c input.y]])
+AT_BISON_CHECK([[-d -S lalr1.cc input.y]])
+AT_BISON_CHECK([[-d -S glr.cc input.y]])
+AT_BISON_CHECK([[ -S lalr1.java input.y]])
+])
+
+AT_TEST([m4_errprintn])
+AT_TEST([@:>@m4_errprintn])
+
+m4_popdef([AT_TEST])
+
+AT_CLEANUP
+
+##----------------------- ##
+## Deprecated directives. ##
+## ---------------------- ##
+
+AT_SETUP([[Deprecated directives]])
+
+AT_KEYWORDS([[deprec]])
+
+AT_DATA_GRAMMAR([[input.y]],
+[[
+%default_prec
+%error_verbose
+%expect_rr 0
+%file-prefix = "foo"
+%file-prefix
+ =
+"bar"
+%fixed-output_files
+%fixed_output-files
+%fixed-output-files
+%name-prefix= "foo"
+%no-default_prec
+%no_default-prec
+%no_lines
+%output = "foo"
+%pure_parser
+%token_table
+%glr-parser
+%% exp : '0'
+]])
+
+AT_BISON_CHECK([[input.y]], [[0]], [[]],
+[[input.y:10.1-13: warning: deprecated directive: '%default_prec', use '%default-prec' [-Wdeprecated]
+input.y:11.1-14: warning: deprecated directive: '%error_verbose', use '%define parse.error verbose' [-Wdeprecated]
+input.y:12.1-10: warning: deprecated directive: '%expect_rr', use '%expect-rr' [-Wdeprecated]
+input.y:13.1-14: warning: deprecated directive: '%file-prefix =', use '%file-prefix' [-Wdeprecated]
+input.y:14.1-15.2: warning: deprecated directive: '%file-prefix\n =', use '%file-prefix' [-Wdeprecated]
+input.y:17.1-19: warning: deprecated directive: '%fixed-output_files', use '%fixed-output-files' [-Wdeprecated]
+input.y:18.1-19: warning: deprecated directive: '%fixed_output-files', use '%fixed-output-files' [-Wdeprecated]
+input.y:20.1-13: warning: deprecated directive: '%name-prefix=', use '%name-prefix' [-Wdeprecated]
+input.y:21.1-16: warning: deprecated directive: '%no-default_prec', use '%no-default-prec' [-Wdeprecated]
+input.y:22.1-16: warning: deprecated directive: '%no_default-prec', use '%no-default-prec' [-Wdeprecated]
+input.y:23.1-9: warning: deprecated directive: '%no_lines', use '%no-lines' [-Wdeprecated]
+input.y:24.1-9: warning: deprecated directive: '%output =', use '%output' [-Wdeprecated]
+input.y:25.1-12: warning: deprecated directive: '%pure_parser', use '%pure-parser' [-Wdeprecated]
+input.y:26.1-12: warning: deprecated directive: '%token_table', use '%token-table' [-Wdeprecated]
+]])
+
+AT_CLEANUP
+
+## ---------------------------- ##
+## Unput's effect on locations. ##
+## ---------------------------- ##
+dnl When the scanner detects a deprecated construct, it unputs the correct
+dnl version, but it should *not* have any impact on the scanner cursor. If it
+dnl does, the locations of directives on the same line become erroneous.
+
+AT_SETUP([[Unput's effect on locations]])
+
+AT_KEYWORDS([[deprec]])
+
+AT_DATA_GRAMMAR([[input.y]],
+[[
+%glr-parser
+%expect_rr 42 %expect_rr 42
+ %expect_rr 42
+%error_verbose %error_verbose
+ %error_verbose
+%% exp: '0'
+]])
+
+AT_BISON_CHECK([[input.y]], [[1]], [[]],
+[[input.y:11.1-10: warning: deprecated directive: '%expect_rr', use '%expect-rr' [-Wdeprecated]
+input.y:11.15-24: warning: deprecated directive: '%expect_rr', use '%expect-rr' [-Wdeprecated]
+input.y:12.15-24: warning: deprecated directive: '%expect_rr', use '%expect-rr' [-Wdeprecated]
+input.y:13.1-14: warning: deprecated directive: '%error_verbose', use '%define parse.error verbose' [-Wdeprecated]
+input.y:13.16-29: warning: deprecated directive: '%error_verbose', use '%define parse.error verbose' [-Wdeprecated]
+input.y:13.11-21: error: %define variable 'parse.error' redefined
+input.y:13-6: previous definition
+input.y:14.16-29: warning: deprecated directive: '%error_verbose', use '%define parse.error verbose' [-Wdeprecated]
+input.y:14.11-21: error: %define variable 'parse.error' redefined
+input.y:13.11-21: previous definition
+]])
+
+AT_CLEANUP
+
+##--------------------------- ##
+## Non-deprecated directives. ##
+## -------------------------- ##
+
+AT_SETUP([[Non-deprecated directives]])
+
+AT_KEYWORDS([[deprec]])
+
+AT_DATA_GRAMMAR([[input.y]],
+[[
+%default-prec
+%error-verbose
+%expect-rr 42
+%file-prefix "foo"
+%file-prefix
+"bar"
+%fixed-output-files
+%name-prefix "foo"
+%no-default-prec
+%no-lines
+%output "foo"
+%pure-parser
+%token-table
+%% exp : '0'
+]])
+
+AT_BISON_CHECK([[input.y]], [[0]], [[]],
+[[input.y: warning: %expect-rr applies only to GLR parsers [-Wother]
+]])
+
+AT_CLEANUP
projects / bison.git / blobdiff