Merge remote-tracking branch 'origin/maint'

[bison.git] / tests / input.at

diff --git a/tests/input.at b/tests/input.at
index 6d8d552c57a8695269012a639d217f38839d5d1a..25af1005e8abf9e9af95268bf3dced9caf1ce8a9 100644 (file)
--- a/tests/input.at
+++ b/tests/input.at
@@ -60,19 +60,18 @@ exp: foo { $$; } foo { $2; } foo
 AT_BISON_CHECK([input.y], [1], [],
 [[input.y:5.12-13: $$ 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([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

-input.y:5.6-32: warning: type clash on default action: <bar> != <>
-input.y:6.6-8: warning: type clash on default action: <bar> != <>
-input.y:7.5: warning: empty rule for typed nonterminal, and no action
+input.y:5.6-32: warning: type clash on default action: <bar> != <> [-Wother]
+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]

 ]])
 
 AT_CLEANUP
 
 
 # _AT_UNUSED_VALUES_DECLARATIONS()
 ]])
 
 AT_CLEANUP
 
 
 # _AT_UNUSED_VALUES_DECLARATIONS()

-# --------------------------------------------
+# --------------------------------

 # Generate the token, type, and destructor
 # declarations for the unused values tests.
 # Generate the token, type, and destructor
 # declarations for the unused values tests.

-

 m4_define([_AT_UNUSED_VALUES_DECLARATIONS],
 [[[%token <integer> INT;
 %type <integer> a b c d e f g h i j k l;
 m4_define([_AT_UNUSED_VALUES_DECLARATIONS],
 [[[%token <integer> INT;
 %type <integer> a b c d e f g h i j k l;


@@ -80,15 +79,11 @@ m4_define([_AT_UNUSED_VALUES_DECLARATIONS],
 
 
 # AT_CHECK_UNUSED_VALUES(DECLARATIONS_AFTER, CHECK_MIDRULE_VALUES)
 
 
 # AT_CHECK_UNUSED_VALUES(DECLARATIONS_AFTER, CHECK_MIDRULE_VALUES)

-# ------------------------------------------------------------------
-# Generate a grammar to test unused values,
-# compile it, run it.  If DECLARATIONS_AFTER
-# is set, then the token, type, and destructor
-# declarations are generated after the rules
-# rather than before.  If CHECK_MIDRULE_VALUES
-# is set, then --warnings=midrule-values is
-# set.
-
+# ----------------------------------------------------------------
+# Generate a grammar to test unused values, compile it, run it.  If
+# DECLARATIONS_AFTER is set, then the token, type, and destructor
+# declarations are generated after the rules rather than before.  If
+# CHECK_MIDRULE_VALUES is set, then --warnings=midrule-values is set.

 m4_define([AT_CHECK_UNUSED_VALUES],
 [AT_DATA([input.y],
 m4_ifval($1, [
 m4_define([AT_CHECK_UNUSED_VALUES],
 [AT_DATA([input.y],
 m4_ifval($1, [


@@ -118,39 +113,39 @@ _AT_UNUSED_VALUES_DECLARATIONS])
 )
 
 AT_BISON_CHECK(m4_ifval($2, [ --warnings=midrule-values ])[ input.y], [0], [],
 )
 
 AT_BISON_CHECK(m4_ifval($2, [ --warnings=midrule-values ])[ input.y], [0], [],

-[[input.y:11.10-32: warning: unset value: $]$[
-input.y:11.10-32: warning: unused value: $]1[
-input.y:11.10-32: warning: unused value: $]3[
-input.y:11.10-32: warning: unused value: $]5[
-input.y:12.9: warning: empty rule for typed nonterminal, and no action
-]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $$
-input.y:13.26-41: warning: unset value: $$
-]]])[[input.y:13.10-62: warning: unset value: $]$[
-input.y:13.10-62: warning: unused value: $]3[
-input.y:13.10-62: warning: unused value: $]5[
-]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$
-]]])[[input.y:14.10-49: warning: unset value: $]$[
-input.y:14.10-49: warning: unused value: $]3[
-input.y:14.10-49: warning: unused value: $]5[
-input.y:15.10-37: warning: unset value: $]$[
-input.y:15.10-37: warning: unused value: $]3[
-input.y:15.10-37: warning: unused value: $]5[
-input.y:17.10-58: warning: unset value: $]$[
-input.y:17.10-58: warning: unused value: $]1[
-]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[
-]]])[[input.y:17.10-58: warning: unused value: $]3[
-]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]4[
-]]])[[input.y:17.10-58: warning: unused value: $]5[
-input.y:18.10-72: warning: unset value: $]$[
-input.y:18.10-72: warning: unused value: $]1[
-input.y:18.10-72: warning: unused value: $]3[
-]]m4_ifval($2, [[[input.y:18.10-72: warning: unused value: $]4[
-]]])[[input.y:18.10-72: warning: unused value: $]5[
-]]m4_ifval($2, [[[input.y:20.10-55: warning: unused value: $]3[
-]]])[[input.y:21.10-68: warning: unset value: $]$[
-input.y:21.10-68: warning: unused value: $]1[
-input.y:21.10-68: warning: unused value: $]2[
-]]m4_ifval($2, [[[input.y:21.10-68: warning: unused value: $]4[
+[[input.y:11.10-32: warning: unset value: $]$[ [-Wother]
+input.y:11.10-32: warning: unused value: $]1[ [-Wother]
+input.y:11.10-32: warning: unused value: $]3[ [-Wother]
+input.y:11.10-32: warning: unused value: $]5[ [-Wother]
+input.y:12.9: warning: empty rule for typed nonterminal, and no action [-Wother]
+]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $$ [-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]

 ]]]))])
 
 
 ]]]))])
 
 


@@ -274,6 +269,102 @@ input.y:12.10-24: %printer redeclaration for <field2>
 input.y:5.10-24: previous declaration
 ]])
 
 input.y:5.10-24: previous declaration
 ]])
 

+AT_CLEANUP
+
+## ----------------------------------------------------- ##
+## Undeclared symbols used for a printer or destructor.  ##
+## ----------------------------------------------------- ##
+
+AT_SETUP([Undeclared symbols used for a printer or destructor])
+
+AT_DATA([[input.y]],
+[[%printer {} foo baz
+%destructor {} bar
+
+%%
+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
+input.y:1.17-19: warning: symbol baz is used, but is not defined as a token and has no rules [-Wother]
+input.y:1.13-15: warning: symbol foo is used, but is not defined as a token and has no rules [-Wother]
+]])
+
+AT_CLEANUP
+
+
+## ----------------------------------------------------- ##
+## Unassociated types used for a printer or destructor.  ##
+## ----------------------------------------------------- ##
+
+AT_SETUP([Unassociated types used for a printer or destructor])
+
+AT_DATA([[input.y]],
+[[%token <type1> tag1
+%type <type2> tag2
+
+%printer { } <type1> <type3>
+%destructor { } <type2> <type4>
+
+%%
+
+exp: tag1 { $1; }
+   | tag2 { $1; }
+
+tag2: "a" { $$; }
+]])
+
+AT_BISON_CHECK([input.y], [0], [],
+[[input.y:4.22-28: warning: type <type3> is used, but is not associated to any symbol [-Wother]
+input.y:5.25-31: warning: type <type4> is used, but is not associated to any symbol [-Wother]
+]])
+
+AT_CLEANUP
+
+
+## --------------------------------- ##
+## Useless printers or destructors.  ##
+## --------------------------------- ##
+
+AT_SETUP([Useless printers or destructors])
+
+AT_DATA([[input.y]],
+[[%token <type1> token1
+%token <type2> token2
+%token <type3> token3
+%token <type4> token4
+%token <type5> token51 token52
+%token <type6> token61 token62
+%token <type7> token7
+
+%printer {} token1
+%destructor {} token2
+%printer {} token51
+%destructor {} token61
+
+%printer {} token7
+
+%printer {} <type1>
+%destructor {} <type2>
+%printer {} <type3>
+%destructor {} <type4>
+
+%printer {} <type5>
+%destructor {} <type6>
+
+%destructor {} <type7>
+
+%%
+exp: "a";
+]])
+
+AT_BISON_CHECK([input.y], [0], [],
+[[input.y:16.13-19: warning: useless %printer for type <type1> [-Wother]
+input.y:17.16-22: warning: useless %destructor for type <type2> [-Wother]
+]])
+
+

 AT_CLEANUP
 
 
 AT_CLEANUP
 
 


@@ -295,9 +386,9 @@ tagged: { } ;
 ]])
 
 AT_BISON_CHECK([input.y], [0], [],
 ]])
 
 AT_BISON_CHECK([input.y], [0], [],

-[[input.y:6.8-45: warning: unset value: $$
-input.y:6.8-45: warning: unused value: $2
-input.y:7.6-8: warning: unset value: $$
+[[input.y:6.8-45: warning: unset value: $$ [-Wother]
+input.y:6.8-45: warning: unused value: $2 [-Wother]
+input.y:7.6-8: warning: unset value: $$ [-Wother]

 ]])
 
 AT_DATA([[input.y]],
 ]])
 
 AT_DATA([[input.y]],


@@ -312,8 +403,8 @@ tagged: { } ;
 ]])
 
 AT_BISON_CHECK([input.y], [0], [],
 ]])
 
 AT_BISON_CHECK([input.y], [0], [],

-[[input.y:6.8-45: warning: unused value: $4
-input.y:8.9-11: warning: unset value: $$
+[[input.y:6.8-45: warning: unused value: $4 [-Wother]
+input.y:8.9-11: warning: unset value: $$ [-Wother]

 ]])
 
 AT_CLEANUP
 ]])
 
 AT_CLEANUP


@@ -336,9 +427,9 @@ end: { }  ;
 ]])
 
 AT_BISON_CHECK([input.y], [0], [],
 ]])
 
 AT_BISON_CHECK([input.y], [0], [],

-[[input.y:6.8-22: warning: unset value: $$
-input.y:6.8-22: warning: unused value: $2
-input.y:7.6-8: warning: unset value: $$
+[[input.y:6.8-22: warning: unset value: $$ [-Wother]
+input.y:6.8-22: warning: unused value: $2 [-Wother]
+input.y:7.6-8: warning: unset value: $$ [-Wother]

 ]])
 
 AT_CLEANUP
 ]])
 
 AT_CLEANUP


@@ -442,6 +533,7 @@ char apostrophe = '\'';
 
 #include <stdio.h>
 #include <stdlib.h>
 
 #include <stdio.h>
 #include <stdlib.h>

+#include <assert.h>

 %}
 /* %{ and %} can be here too. */
 
 %}
 /* %{ and %} can be here too. */
 


@@ -509,14 +601,13 @@ yylex (void)
 #output "; /* "
   */
   static size_t toknum;
 #output "; /* "
   */
   static size_t toknum;

-  if (! (toknum < sizeof input))
-    abort ();
+  assert (toknum < sizeof input);

   yylval = value_as_yystype (input[toknum]);
   return input[toknum++];
 }
 ]])
 
   yylval = value_as_yystype (input[toknum]);
   return input[toknum++];
 }
 ]])
 

-# Pacify Emacs' font-lock-mode: "
+# Pacify Emacs'font-lock-mode: "

 
 AT_DATA([main.c],
 [[typedef int value;
 
 AT_DATA([main.c],
 [[typedef int value;


@@ -595,8 +686,8 @@ AT_CHECK_REQUIRE(100.0, 63)
 
 AT_SETUP([String aliases for character tokens])
 
 
 AT_SETUP([String aliases for character tokens])
 

-# Bison once thought a character token and its alias were different symbols
-# with the same user token number.
+# Bison once thought a character token and its alias were different
+# symbols with the same user token number.

 
 AT_DATA_GRAMMAR([input.y],
 [[%token 'a' "a"
 
 AT_DATA_GRAMMAR([input.y],
 [[%token 'a' "a"


@@ -640,14 +731,14 @@ AT_BISON_OPTION_POPDEFS
 
 # POSIX Yacc accept periods, but not dashes.
 AT_BISON_CHECK([--yacc input.y], [1], [],
 
 # 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
-input.y:18.8-16: POSIX Yacc forbids dashes in symbol names: with-dash
+[[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], [], [],
 ]])
 
 # 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
-input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash
+[[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]

 ]])
 
 # Dashes are fine for GNU Bison.
 ]])
 
 # Dashes are fine for GNU Bison.


@@ -720,10 +811,10 @@ AT_CLEANUP
 
 AT_SETUP([Unclosed constructs])
 
 
 AT_SETUP([Unclosed constructs])
 

-# Bison's scan-gram.l once forgot to STRING_FINISH some unclosed constructs, so
-# they were prepended to whatever it STRING_GROW'ed next.  It also threw them
-# away rather than returning them to the parser.  The effect was confusing
-# subsequent error messages.
+# Bison's scan-gram.l once forgot to STRING_FINISH some unclosed
+# constructs, so they were prepended to whatever it STRING_GROW'ed
+# next.  It also threw them away rather than returning them to the
+# parser.  The effect was confusing subsequent error messages.

 
 AT_DATA([input.y],
 [[%token A "a
 
 AT_DATA([input.y],
 [[%token A "a


@@ -765,8 +856,8 @@ AT_CLEANUP
 
 AT_SETUP([%start after first rule])
 
 
 AT_SETUP([%start after first rule])
 

-# Bison once complained that a %start after the first rule was a redeclaration
-# of the start symbol.
+# Bison once complained that a %start after the first rule was a
+# redeclaration of the start symbol.

 
 AT_DATA([input.y],
 [[%%
 
 AT_DATA([input.y],
 [[%%


@@ -815,7 +906,7 @@ start: %prec PREC ;
 ]])
 
 AT_BISON_CHECK([[input.y]], [[0]], [],
 ]])
 
 AT_BISON_CHECK([[input.y]], [[0]], [],

-[[input.y:2.8-17: warning: token for %prec is not defined: PREC
+[[input.y:2.8-17: warning: token for %prec is not defined: PREC [-Wother]

 ]])
 
 AT_CLEANUP
 ]])
 
 AT_CLEANUP


@@ -1083,6 +1174,17 @@ AT_BISON_CHECK([[input.y]], [1], [],
 [[input.y:1.9-34: invalid value for %define Boolean variable 'lr.keep-unreachable-states'
 ]])
 
 [[input.y:1.9-34: invalid value for %define Boolean variable 'lr.keep-unreachable-states'
 ]])
 

+AT_DATA([[input.y]],
+[[%define namespace "foo"
+%define api.namespace "foo"
+%%
+start: ;
+]])
+AT_BISON_CHECK([[input.y]], [1], [],
+[[input.y:2.9-21: %define variable 'api.namespace' redefined
+input.y:1.9-17: previous definition
+]])
+

 AT_DATA([[input.y]],
 [[%define foo_bar "baz"
 %%
 AT_DATA([[input.y]],
 [[%define foo_bar "baz"
 %%


@@ -1141,14 +1243,14 @@ m4_define([AT_CHECK_NAMESPACE_ERROR],
 AT_DATA([[input.y]],
 [[%language "C++"
 %defines
 AT_DATA([[input.y]],
 [[%language "C++"
 %defines

-%define namespace "]$1["
+%define api.namespace "]$1["

 %%
 start: ;
 ]])
 
 AT_BISON_CHECK([[input.y]], [1], [],
 [m4_foreach([b4_arg], m4_dquote(m4_shift($@)),
 %%
 start: ;
 ]])
 
 AT_BISON_CHECK([[input.y]], [1], [],
 [m4_foreach([b4_arg], m4_dquote(m4_shift($@)),

-[[input.y:3.9-17: ]b4_arg[
+[[input.y:3.9-21: ]b4_arg[

 ]])])
 ])
 
 ]])])
 ])
 


@@ -1197,10 +1299,10 @@ start: '
 AT_CHECK([[perl -e "print 'start: \'';" >> empty.y || exit 77]])
 
 AT_BISON_CHECK([empty.y], [1], [],
 AT_CHECK([[perl -e "print 'start: \'';" >> empty.y || exit 77]])
 
 AT_BISON_CHECK([empty.y], [1], [],

-[[empty.y:2.8-9: warning: empty character literal
-empty.y:3.8-4.0: warning: empty character literal
+[[empty.y:2.8-9: warning: empty character literal [-Wother]
+empty.y:3.8-4.0: warning: empty character literal [-Wother]

 empty.y:3.8-4.0: missing "'" at end of line
 empty.y:3.8-4.0: missing "'" at end of line

-empty.y:4.8: warning: empty character literal
+empty.y:4.8: warning: empty character literal [-Wother]

 empty.y:4.8: missing "'" at end of file
 ]])
 
 empty.y:4.8: missing "'" at end of file
 ]])
 


@@ -1212,10 +1314,10 @@ start: 'ab
 AT_CHECK([[perl -e "print 'start: \'ab';" >> two.y || exit 77]])
 
 AT_BISON_CHECK([two.y], [1], [],
 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
-two.y:3.8-4.0: warning: extra characters in character literal
+[[two.y:2.8-11: warning: extra characters in character literal [-Wother]
+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:3.8-4.0: missing "'" at end of line

-two.y:4.8-10: warning: extra characters in character literal
+two.y:4.8-10: warning: extra characters in character literal [-Wother]

 two.y:4.8-10: missing "'" at end of file
 ]])
 
 two.y:4.8-10: missing "'" at end of file
 ]])
 


@@ -1227,10 +1329,10 @@ start: 'abc
 AT_CHECK([[perl -e "print 'start: \'abc';" >> three.y || exit 77]])
 
 AT_BISON_CHECK([three.y], [1], [],
 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
-three.y:3.8-4.0: warning: extra characters in character literal
+[[three.y:2.8-12: warning: extra characters in character literal [-Wother]
+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:3.8-4.0: missing "'" at end of line

-three.y:4.8-11: warning: extra characters in character literal
+three.y:4.8-11: warning: extra characters in character literal [-Wother]

 three.y:4.8-11: missing "'" at end of file
 ]])
 
 three.y:4.8-11: missing "'" at end of file
 ]])
 


@@ -1258,25 +1360,25 @@ AT_CHECK([[perl -e 'print "start: \"\\\t\\\f\\\0\\\1\" ;";' >> input.y \
 
 AT_BISON_CHECK([input.y], [1], [],
 [[input.y:2.9-12: invalid number after \-escape: 777
 
 AT_BISON_CHECK([input.y], [1], [],
 [[input.y:2.9-12: invalid number after \-escape: 777

-input.y:2.8-13: warning: empty character literal
+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: invalid number after \-escape: 0

-input.y:2.15-18: warning: empty character literal
+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: invalid number after \-escape: xfff

-input.y:2.20-26: warning: empty character literal
+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: invalid number after \-escape: x0

-input.y:2.28-32: warning: empty character literal
+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: invalid number after \-escape: uffff

-input.y:3.8-15: warning: empty character literal
+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: invalid number after \-escape: u0000

-input.y:3.17-24: warning: empty character literal
+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: invalid number after \-escape: Uffffffff

-input.y:3.26-37: warning: empty character literal
+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: invalid number after \-escape: U00000000

-input.y:3.39-50: warning: empty character literal
+input.y:3.39-50: warning: empty character literal [-Wother]

 input.y:4.9-10: invalid character after \-escape: ' '
 input.y:4.9-10: invalid character after \-escape: ' '

-input.y:4.8-11: warning: empty character literal
+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: invalid character after \-escape: A

-input.y:4.13-16: warning: empty character literal
+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:5.9-16: invalid character after \-escape: \t
 input.y:5.17: invalid character after \-escape: \f
 input.y:5.18: invalid character after \-escape: \0


@@ -1321,20 +1423,20 @@ foo-bar: ;
 
 # -Werror is not enabled by -Wall or equivalent.
 AT_BISON_CHECK([[-Wall input.y]], [[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
+[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]

 ]])
 AT_BISON_CHECK([[-W input.y]], [[0]], [[]],
 ]])
 AT_BISON_CHECK([[-W input.y]], [[0]], [[]],

-[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
+[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]

 ]])
 AT_BISON_CHECK([[-Wno-none input.y]], [[0]], [[]],
 ]])
 AT_BISON_CHECK([[-Wno-none input.y]], [[0]], [[]],

-[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
+[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]

 ]])
 
 # -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
 ]])
 
 # -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
+input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]

 ]])
 [mv stderr experr]
 AT_BISON_CHECK([[-Werror,no-all,yacc input.y]], [[1]], [[]], [[experr]])
 ]])
 [mv stderr experr]
 AT_BISON_CHECK([[-Werror,no-all,yacc input.y]], [[1]], [[]], [[experr]])