# Bison Regressions. -*- Autotest -*-
-# Copyright 2001 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2002 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
AT_BANNER([[Regression tests.]])
-## ------------------ ##
-## Duplicate string. ##
-## ------------------ ##
+## ------------------------- ##
+## Early token definitions. ##
+## ------------------------- ##
-AT_SETUP([Duplicate string])
-AT_DATA([duplicate.y],
-[[/* `Bison -v' used to dump core when two tokens are defined with the same
- string, as LE and GE below. */
+AT_SETUP([Early token definitions])
-%token NUM
-%token LE "<="
-%token GE "<="
+# Found in GCJ: they expect the tokens to be defined before the user
+# prologue, so that they can use the token definitions in it.
+
+AT_DATA([input.y],
+[[%{
+void yyerror (const char *s);
+int yylex (void);
+%}
+%union
+{
+ int val;
+};
+%{
+#ifndef MY_TOKEN
+# error "MY_TOKEN not defined."
+#endif
+%}
+%token MY_TOKEN
%%
-exp: '(' exp ')' | NUM ;
+exp: MY_TOKEN;
%%
]])
-AT_CHECK([bison -v duplicate.y -o duplicate.c], 0, ignore, ignore)
+AT_CHECK([bison -o input.c input.y])
+AT_COMPILE([input.o], [-c input.c])
AT_CLEANUP
-## ------------------------- ##
-## Unresolved SR Conflicts. ##
-## ------------------------- ##
-AT_SETUP([Unresolved SR Conflicts])
+## ---------------- ##
+## Braces parsing. ##
+## ---------------- ##
+
+
+AT_SETUP([Braces parsing])
AT_DATA([input.y],
-[[%token NUM OP
+[[/* Bison used to swallow the character after `}'. */
+
+%%
+exp: { tests = {{{{{{{{{{}}}}}}}}}}; };
%%
-exp: exp OP exp | NUM;
]])
-AT_CHECK([bison input.y -o input.c -v], 0, [],
-[input.y contains 1 shift/reduce conflict.
-])
+AT_CHECK([bison -v -o input.c input.y])
-# Check the contents of the report.
-AT_CHECK([cat input.output], [],
-[[State 4 contains 1 shift/reduce conflict.
+AT_CHECK([grep 'tests = {{{{{{{{{{}}}}}}}}}};' input.c], 0, [ignore])
+AT_CLEANUP
-Grammar
- Number, Line, Rule
- 1 3 exp -> exp OP exp
- 2 3 exp -> NUM
+## ------------------ ##
+## Duplicate string. ##
+## ------------------ ##
-Terminals, with rules where they appear
+AT_SETUP([Duplicate string])
-$ (-1)
-error (256)
-NUM (257) 2
-OP (258) 1
+AT_DATA([input.y],
+[[/* `Bison -v' used to dump core when two tokens are defined with the same
+ string, as LE and GE below. */
+%token NUM
+%token LE "<="
+%token GE "<="
-Nonterminals, with rules where they appear
+%%
+exp: '(' exp ')' | NUM ;
+%%
+]])
-exp (5)
- on left: 1 2, on right: 1
+AT_CHECK([bison -v -o input.c input.y], 0, [],
+[[input.y:6.8-14: warning: symbol `"<="' used more than once as a literal string
+]])
+AT_CLEANUP
-state 0
- NUM shift, and go to state 1
+## ------------------- ##
+## Rule Line Numbers. ##
+## ------------------- ##
- exp go to state 2
+AT_SETUP([Rule Line Numbers])
+AT_KEYWORDS([report])
+AT_DATA([input.y],
+[[%%
+expr:
+'a'
-state 1
+{
- exp -> NUM . (rule 2)
+}
- $default reduce using rule 2 (exp)
+'b'
+{
+}
-state 2
+|
- exp -> exp . OP exp (rule 1)
- $ go to state 5
- OP shift, and go to state 3
+{
+}
-state 3
+'c'
- exp -> exp OP . exp (rule 1)
+{
- NUM shift, and go to state 1
+};
+]])
- exp go to state 4
+AT_CHECK([bison -o input.c -v input.y])
+# Check the contents of the report.
+AT_CHECK([cat input.output], [],
+[[Grammar
+ 0 $accept: expr $end
-state 4
+ 1 @1: /* empty */
- exp -> exp . OP exp (rule 1)
- exp -> exp OP exp . (rule 1)
+ 2 expr: 'a' @1 'b'
- OP shift, and go to state 3
+ 3 @2: /* empty */
- OP [reduce using rule 1 (exp)]
- $default reduce using rule 1 (exp)
+ 4 expr: @2 'c'
+Terminals, with rules where they appear
-state 5
+$end (0) 0
+'a' (97) 2
+'b' (98) 2
+'c' (99) 4
+error (256)
- $ go to state 6
+Nonterminals, with rules where they appear
+$accept (6)
+ on left: 0
+expr (7)
+ on left: 2 4, on right: 0
+@1 (8)
+ on left: 1, on right: 2
+@2 (9)
+ on left: 3, on right: 4
-state 6
- $default accept
+state 0
+ 0 $accept: . expr $end
-]])
+ 'a' shift, and go to state 1
-AT_CLEANUP
+ $default reduce using rule 3 (@2)
+ expr go to state 2
+ @2 go to state 3
-## --------------------- ##
-## Solved SR Conflicts. ##
-## --------------------- ##
-AT_SETUP([Solved SR Conflicts])
+state 1
-AT_DATA([input.y],
-[[%token NUM OP
-%right OP
-%%
-exp: exp OP exp | NUM;
-]])
+ 2 expr: 'a' . @1 'b'
-AT_CHECK([bison input.y -o input.c -v], 0, [], [])
+ $default reduce using rule 1 (@1)
-# Check the contents of the report.
-AT_CHECK([cat input.output], [],
-[[Conflict in state 4 between rule 1 and token OP resolved as shift.
+ @1 go to state 4
-Grammar
+state 2
- Number, Line, Rule
- 1 4 exp -> exp OP exp
- 2 4 exp -> NUM
+ 0 $accept: expr . $end
+ $end shift, and go to state 5
-Terminals, with rules where they appear
-$ (-1)
-error (256)
-NUM (257) 2
-OP (258) 1
+state 3
+ 4 expr: @2 . 'c'
+
+ 'c' shift, and go to state 6
-Nonterminals, with rules where they appear
-exp (5)
- on left: 1 2, on right: 1
+state 4
+ 2 expr: 'a' @1 . 'b'
-state 0
+ 'b' shift, and go to state 7
- NUM shift, and go to state 1
- exp go to state 2
+state 5
+ 0 $accept: expr $end .
+ $default accept
-state 1
- exp -> NUM . (rule 2)
+state 6
- $default reduce using rule 2 (exp)
+ 4 expr: @2 'c' .
+ $default reduce using rule 4 (expr)
-state 2
+state 7
- exp -> exp . OP exp (rule 1)
+ 2 expr: 'a' @1 'b' .
- $ go to state 5
- OP shift, and go to state 3
+ $default reduce using rule 2 (expr)
+]])
+AT_CLEANUP
-state 3
- exp -> exp OP . exp (rule 1)
+## ---------------------- ##
+## Mixing %token styles. ##
+## ---------------------- ##
- NUM shift, and go to state 1
- exp go to state 4
+AT_SETUP([Mixing %token styles])
+
+# Taken from the documentation.
+AT_DATA([input.y],
+[[%token <operator> OR "||"
+%token <operator> LE 134 "<="
+%left OR "<="
+%%
+exp: ;
+%%
+]])
+AT_CHECK([bison -v -o input.c input.y])
+AT_CLEANUP
-state 4
- exp -> exp . OP exp (rule 1)
- exp -> exp OP exp . (rule 1)
- OP shift, and go to state 3
+## ---------------- ##
+## Invalid inputs. ##
+## ---------------- ##
- $default reduce using rule 1 (exp)
+AT_SETUP([Invalid inputs])
+AT_DATA([input.y],
+[[%%
+?
+default: 'a' }
+%&
+%a-does-not-exist
+%-
+%{
+]])
-state 5
+AT_CHECK([bison input.y], [1], [],
+[[input.y:2.1: invalid character: `?'
+input.y:3.14: invalid character: `}'
+input.y:4.1: invalid character: `%'
+input.y:4.2: invalid character: `&'
+input.y:5.1-17: invalid directive: `%a-does-not-exist'
+input.y:6.1: invalid character: `%'
+input.y:6.2: invalid character: `-'
+input.y:7.1-8.0: missing `%}' at end of file
+input.y:7.1-8.0: parse error, unexpected "%{...%}", expecting ";" or "|"
+]])
- $ go to state 6
+AT_CLEANUP
-state 6
+## ------------------- ##
+## Token definitions. ##
+## ------------------- ##
- $default accept
+AT_SETUP([Token definitions])
+# Bison managed, when fed with `%token 'f' "f"' to #define 'f'!
+AT_DATA([input.y],
+[%{
+void yyerror (const char *s);
+int yylex (void);
+%}
+[%token MYEOF 0 "end of file"
+%token 'a' "a"
+%token b "b"
+%token c 'c'
+%token 'd' d
+%%
+exp: "a";
]])
+AT_CHECK([bison -o input.c input.y])
+AT_COMPILE([input.o], [-c input.c])
AT_CLEANUP
+## -------------------- ##
+## Characters Escapes. ##
+## -------------------- ##
-## ------------------- ##
-## Rule Line Numbers. ##
-## ------------------- ##
-AT_SETUP([Rule Line Numbers])
+AT_SETUP([Characters Escapes])
AT_DATA([input.y],
-[[%%
-expr:
-'a'
+[%{
+void yyerror (const char *s);
+int yylex (void);
+%}
+[%%
+exp:
+ '\'' "\'"
+| '\"' "\""
+| '"' "'"
+;
+]])
-{
+AT_CHECK([bison -o input.c input.y])
+AT_COMPILE([input.o], [-c input.c])
+AT_CLEANUP
-}
-'b'
-{
+## -------------- ##
+## Web2c Report. ##
+## -------------- ##
-}
+# The generation of the reduction was once wrong in Bison, and made it
+# miss some reductions. In the following test case, the reduction on
+# `undef_id_tok' in state 1 was missing. This is stripped down from
+# the actual web2c.y.
-|
+AT_SETUP([Web2c Report])
+AT_KEYWORDS([report])
-{
+AT_DATA([input.y],
+[[%token undef_id_tok const_id_tok
+%start CONST_DEC_PART
+\f
+%%
+CONST_DEC_PART:
+ CONST_DEC_LIST
+ ;
+
+CONST_DEC_LIST:
+ CONST_DEC
+ | CONST_DEC_LIST CONST_DEC
+ ;
+
+CONST_DEC:
+ { } undef_id_tok '=' const_id_tok ';'
+ ;
+%%
+]])
-}
+AT_CHECK([bison -v input.y])
+AT_CHECK([cat input.output], 0,
+[[Grammar
-'c'
+ 0 $accept: CONST_DEC_PART $end
-{
+ 1 CONST_DEC_PART: CONST_DEC_LIST
-}
-]])
+ 2 CONST_DEC_LIST: CONST_DEC
+ 3 | CONST_DEC_LIST CONST_DEC
-AT_CHECK([bison input.y -o input.c -v], 0, [], [])
+ 4 @1: /* empty */
-# Check the contents of the report.
-AT_CHECK([cat input.output], [],
-[[Grammar
-
- Number, Line, Rule
- 1 2 @1 -> /* empty */
- 2 2 expr -> 'a' @1 'b'
- 3 15 @2 -> /* empty */
- 4 15 expr -> @2 'c'
+ 5 CONST_DEC: @1 undef_id_tok '=' const_id_tok ';'
Terminals, with rules where they appear
-$ (-1)
-'a' (97) 2
-'b' (98) 2
-'c' (99) 4
+$end (0) 0
+';' (59) 5
+'=' (61) 5
error (256)
+undef_id_tok (258) 5
+const_id_tok (259) 5
Nonterminals, with rules where they appear
-expr (6)
- on left: 2 4
-@1 (7)
- on left: 1, on right: 2
-@2 (8)
- on left: 3, on right: 4
+$accept (7)
+ on left: 0
+CONST_DEC_PART (8)
+ on left: 1, on right: 0
+CONST_DEC_LIST (9)
+ on left: 2 3, on right: 1 3
+CONST_DEC (10)
+ on left: 5, on right: 2 3
+@1 (11)
+ on left: 4, on right: 5
state 0
- 'a' shift, and go to state 1
-
- $default reduce using rule 3 (@2)
+ 0 $accept: . CONST_DEC_PART $end
- expr go to state 6
- @2 go to state 2
+ $default reduce using rule 4 (@1)
+ CONST_DEC_PART go to state 1
+ CONST_DEC_LIST go to state 2
+ CONST_DEC go to state 3
+ @1 go to state 4
state 1
- expr -> 'a' . @1 'b' (rule 2)
-
- $default reduce using rule 1 (@1)
-
- @1 go to state 3
+ 0 $accept: CONST_DEC_PART . $end
+ $end shift, and go to state 5
state 2
- expr -> @2 . 'c' (rule 4)
+ 1 CONST_DEC_PART: CONST_DEC_LIST .
+ 3 CONST_DEC_LIST: CONST_DEC_LIST . CONST_DEC
- 'c' shift, and go to state 4
+ undef_id_tok reduce using rule 4 (@1)
+ $default reduce using rule 1 (CONST_DEC_PART)
+ CONST_DEC go to state 6
+ @1 go to state 4
state 3
- expr -> 'a' @1 . 'b' (rule 2)
-
- 'b' shift, and go to state 5
+ 2 CONST_DEC_LIST: CONST_DEC .
+ $default reduce using rule 2 (CONST_DEC_LIST)
state 4
- expr -> @2 'c' . (rule 4)
-
- $default reduce using rule 4 (expr)
+ 5 CONST_DEC: @1 . undef_id_tok '=' const_id_tok ';'
+ undef_id_tok shift, and go to state 7
state 5
- expr -> 'a' @1 'b' . (rule 2)
-
- $default reduce using rule 2 (expr)
+ 0 $accept: CONST_DEC_PART $end .
+ $default accept
state 6
- $ go to state 7
+ 3 CONST_DEC_LIST: CONST_DEC_LIST CONST_DEC .
+ $default reduce using rule 3 (CONST_DEC_LIST)
state 7
- $ go to state 8
+ 5 CONST_DEC: @1 undef_id_tok . '=' const_id_tok ';'
+ '=' shift, and go to state 8
state 8
- $default accept
+ 5 CONST_DEC: @1 undef_id_tok '=' . const_id_tok ';'
+ const_id_tok shift, and go to state 9
-]])
-AT_CLEANUP
+state 9
+ 5 CONST_DEC: @1 undef_id_tok '=' const_id_tok . ';'
+ ';' shift, and go to state 10
-## -------------------- ##
-## %expect not enough. ##
-## -------------------- ##
-AT_SETUP([%expect not enough])
+state 10
-AT_DATA([input.y],
-[[%token NUM OP
-%expect 0
-%%
-exp: exp OP exp | NUM;
+ 5 CONST_DEC: @1 undef_id_tok '=' const_id_tok ';' .
+
+ $default reduce using rule 5 (CONST_DEC)
]])
-AT_CHECK([bison input.y -o input.c], 1, [],
-[input.y contains 1 shift/reduce conflict.
-expected 0 shift/reduce conflicts
-])
AT_CLEANUP
## --------------- ##
-## %expect right. ##
+## Web2c Actions. ##
## --------------- ##
-AT_SETUP([%expect right])
-
-AT_DATA([input.y],
-[[%token NUM OP
-%expect 1
-%%
-exp: exp OP exp | NUM;
-]])
-
-AT_CHECK([bison input.y -o input.c], 0)
-AT_CLEANUP
-
-
-## ------------------ ##
-## %expect too much. ##
-## ------------------ ##
+# The generation of the mapping `state -> action' was once wrong in
+# extremely specific situations. web2c.y exhibits this situation.
+# Below is a stripped version of the grammar. It looks like one can
+# simplify it further, but just don't: it is tuned to exhibit a bug,
+# which disapears when applying sane grammar transformations.
+#
+# It used to be wrong on yydefact only:
+#
+# static const short yydefact[] =
+# {
+# - 2, 0, 1, 0, 0, 2, 3, 2, 5, 4,
+# + 2, 0, 1, 0, 0, 0, 3, 2, 5, 4,
+# 0, 0
+# };
+#
+# but let's check all the tables.
-AT_SETUP([%expect too much])
-AT_DATA([input.y],
-[[%token NUM OP
-%expect 2
-%%
-exp: exp OP exp | NUM;
-]])
+AT_SETUP([Web2c Actions])
-AT_CHECK([bison input.y -o input.c], 1, [],
-[input.y contains 1 shift/reduce conflict.
-expected 2 shift/reduce conflicts
-])
-AT_CLEANUP
+AT_KEYWORDS([report])
-
-## ---------------------- ##
-## Mixing %token styles. ##
-## ---------------------- ##
-
-
-AT_SETUP([Mixing %token styles])
-
-# Taken from the documentation.
AT_DATA([input.y],
-[[%token <operator> OR "||"
-%token <operator> LE 134 "<="
-%left OR "<="
-%%
-exp: ;
+[[%%
+statement: struct_stat;
+struct_stat: /* empty. */ | if else;
+if: "if" "const" "then" statement;
+else: "else" statement;
%%
]])
-AT_CHECK([bison -v input.y -o input.c], 0, ignore, ignore)
-
-AT_CLEANUP
+AT_CHECK([bison -v -o input.c input.y])
+# Check only the tables. We don't use --no-parser, because it is
+# still to be implemented in the experimental branch of Bison.
+[sed -n 's/ *$//;/^static const.*\[\] =/,/^}/p' input.c >tables.c]
-
-## ---------------------- ##
-## %union and --defines. ##
-## ---------------------- ##
-
-
-AT_SETUP([%union and --defines])
-
-AT_DATA([union.y],
-[%union
+AT_CHECK([[cat tables.c]], 0,
+[[static const unsigned char yytranslate[] =
{
- int integer;
- char *string ;
-}
-%%
-exp: {};
-])
-
-AT_CHECK([bison --defines union.y])
-
-AT_CLEANUP
-
-
-## --------------------------------------- ##
-## Duplicate '/' in C comments in %union ##
-## --------------------------------------- ##
-
-
-AT_SETUP([%union and C comments])
-
-AT_DATA([union-comment.y],
-[%union
+ 0, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 1, 2, 3, 4,
+ 5, 6
+};
+static const unsigned char yyprhs[] =
{
- /* The int. */ int integer;
- /* The string. */ char *string ;
-}
-%%
-exp: {};
-])
-
-AT_CHECK([bison union-comment.y])
-AT_CHECK([fgrep '//*' union-comment.tab.c], [1], [])
-
-AT_CLEANUP
-
-
-## ----------------- ##
-## Invalid input 1. ##
-## ----------------- ##
-
-
-AT_SETUP([Invalid input: 1])
-
-AT_DATA([input.y],
-[[%%
-?
-]])
-
-AT_CHECK([bison input.y], [1], [],
-[[input.y:2: invalid input: `?'
-input.y:3: fatal error: no rules in the input grammar
-]])
-
-AT_CLEANUP
-
-
-## ----------------- ##
-## Invalid input 2. ##
-## ----------------- ##
-
-
-AT_SETUP([Invalid input: 2])
-
-AT_DATA([input.y],
-[[%%
-default: 'a' }
-]])
-
-AT_CHECK([bison input.y], [1], [],
-[[input.y:2: invalid input: `}'
-]])
-
-AT_CLEANUP
-
-
-
-## -------------------- ##
-## Invalid %directive. ##
-## -------------------- ##
-
-
-AT_SETUP([Invalid %directive])
-
-AT_DATA([input.y],
-[[%invalid
-]])
-
-AT_CHECK([bison input.y], [1], [],
-[[input.y:1: unrecognized: %invalid
-input.y:1: Skipping to next %
-input.y:2: fatal error: no input grammar
+ 0, 0, 3, 5, 6, 9, 14
+};
+static const yysigned_char yyrhs[] =
+{
+ 8, 0, -1, 9, -1, -1, 10, 11, -1, 3,
+ 4, 5, 8, -1, 6, 8, -1
+};
+static const unsigned char yyrline[] =
+{
+ 0, 2, 2, 3, 3, 4, 5
+};
+static const char *const yytname[] =
+{
+ "$end", "error", "$undefined", "\"if\"", "\"const\"", "\"then\"",
+ "\"else\"", "$accept", "statement", "struct_stat", "if", "else", 0
+};
+static const unsigned short yytoknum[] =
+{
+ 0, 256, 257, 258, 259, 260, 261
+};
+static const unsigned char yyr1[] =
+{
+ 0, 7, 8, 9, 9, 10, 11
+};
+static const unsigned char yyr2[] =
+{
+ 0, 2, 1, 0, 2, 4, 2
+};
+static const unsigned char yydefact[] =
+{
+ 3, 0, 0, 2, 0, 0, 1, 3, 4, 3,
+ 6, 5
+};
+static const yysigned_char yydefgoto[] =
+{
+ -1, 2, 3, 4, 8
+};
+static const yysigned_char yypact[] =
+{
+ -2, -1, 4, -8, 0, 2, -8, -2, -8, -2,
+ -8, -8
+};
+static const yysigned_char yypgoto[] =
+{
+ -8, -7, -8, -8, -8
+};
+static const unsigned char yytable[] =
+{
+ 10, 1, 11, 5, 6, 0, 7, 9
+};
+static const yysigned_char yycheck[] =
+{
+ 7, 3, 9, 4, 0, -1, 6, 5
+};
+static const unsigned char yystos[] =
+{
+ 0, 3, 8, 9, 10, 4, 0, 6, 11, 5,
+ 8, 8
+};
]])
AT_CLEANUP
-
-
-
-## --------------------- ##
-## Invalid CPP headers. ##
-## --------------------- ##
-
-# AT_TEST_CPP_GUARD_H([INPUT-FILE-BASE)
-# -------------------------------------
-m4_define([AT_TEST_CPP_GUARD_H],
-[AT_SETUP([Invalid CPP guards: $1])
-
-# Possibly create inner directories.
-dirname=`AS_DIRNAME([$1])`
-AS_MKDIR_P([$dirname])
-
-AT_DATA([$1.y],
-[%%
-dummy:
-])
-
-AT_CHECK([bison --defines=$1.h $1.y])
-
-# CPP should be happy with it.
-AT_CHECK([$CC -E $1.h], 0, [ignore])
-
-AT_CLEANUP
-])
-
-AT_TEST_CPP_GUARD_H([input/input])
-AT_TEST_CPP_GUARD_H([9foo])
projects / bison.git / blobdiff