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* src/bison.simple (YYSTACK_REALLOC): New.

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(yyparse) [!yyoverflow]: Use it and free the old stack.
Reported by FIXME: Who.
This commit is contained in:
Akim Demaille
2001-11-12 09:14:35 +00:00
parent d81e5db73f
commit 97e9ee3ad5
3 changed files with 32 additions and 16 deletions
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39
src/bison.simple
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@@ -76,10 +76,27 @@
# define YYSTACK_USE_ALLOCA 0
#endif
/* Realloc WHAT from SIZE to YYSTACKSIZE elements of TYPE.
If WHAT was malloc'ed (not the original automatic ARRAY), free it. */
#if YYSTACK_USE_ALLOCA
# define YYSTACK_ALLOC alloca
# define YYSTACK_REALLOC(Type, What, Array) \
do { \
Type *old = What; \
What = (Type *) malloc (yystacksize * sizeof (Type)); \
__yy_memcpy ((char *) What, (char *) old, \
(size) * (unsigned int) sizeof (Type)); \
yyfree_stacks = 1; \
if (old != Array) \
free (old); \
} while (0)
#else
# define YYSTACK_ALLOC malloc
# define YYSTACK_REALLOC(Type, What, Array) \
do { \
Type *old = What; \
What = (Type *) alloca (yystacksize * sizeof (Type)); \
__yy_memcpy ((char *) What, (char *) old, \
(size) * (unsigned int) sizeof (Type)); \
} while (0)
#endif
#define yyerrok (yyerrstatus = 0)
@@ -291,7 +308,7 @@ yyparse (YYPARSE_PARAM_ARG)
/* Three stacks and their tools:
`yyss': related to states,
`yysv': related to semantic values,
`yyvs': related to semantic values,
`yyls': related to locations.
Refer to the stacks thru separate pointers, to allow yyoverflow
@@ -420,19 +437,11 @@ yyparse (YYPARSE_PARAM_ARG)
yystacksize *= 2;
if (yystacksize > YYMAXDEPTH)
yystacksize = YYMAXDEPTH;
# if !YYSTACK_USE_ALLOCA
yyfree_stacks = 1;
# endif
yyss = (short *) YYSTACK_ALLOC (yystacksize * sizeof (*yyssp));
__yy_memcpy ((char *)yyss, (char *)yyss1,
size * (unsigned int) sizeof (*yyssp));
yyvs = (YYSTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yyvsp));
__yy_memcpy ((char *)yyvs, (char *)yyvs1,
size * (unsigned int) sizeof (*yyvsp));
YYSTACK_REALLOC (short, yyss, yyssa);
YYSTACK_REALLOC (YYSTYPE, yyvs, yyvsa);
# if YYLSP_NEEDED
yyls = (YYLTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yylsp));
__yy_memcpy ((char *)yyls, (char *)yyls1,
size * (unsigned int) sizeof (*yylsp));
YYSTACK_REALLOC (YYLTYPE, yyls, yylsa);
# endif
#endif /* no yyoverflow */