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(yyinitGLRStack, yyreturn): Don't call malloc again if the first call

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fails.
This commit is contained in:
Paul Eggert
2005-07-22 04:56:14 +00:00
parent 9cbfdc9e01
commit 3922956abd
1 changed files with 24 additions and 18 deletions
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42
data/glr.c
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@@ -1018,11 +1018,14 @@ yyinitGLRStack (yyGLRStack* yystack, size_t yysize)
yystack->yyerrState = 0;
yynerrs = 0;
yystack->yyspaceLeft = yysize;
yystack->yynextFree = yystack->yyitems =
yystack->yyitems =
(yyGLRStackItem*) YYMALLOC (yysize * sizeof yystack->yynextFree[0]);
if (!yystack->yyitems)
return yyfalse;
yystack->yynextFree = yystack->yyitems;
yystack->yysplitPoint = NULL;
yystack->yylastDeleted = NULL;
return yyinitStateSet (&yystack->yytops) && yystack->yyitems;
return yyinitStateSet (&yystack->yytops);
}
#define YYRELOC(YYFROMITEMS,YYTOITEMS,YYX,YYTYPE) \
@@ -2154,24 +2157,27 @@ b4_syncline([@oline@], [@ofile@])])dnl
yydestruct ("Error: discarding lookahead",
yytoken, yylvalp]b4_location_if([, yyllocp])[);
/* Now pop stack until empty, destroying its entries as we go. */
{
yyGLRState** yystates = yystack.yytops.yystates;
if (yystates)
while (yystates[0])
{
yyGLRState *yys = yystates[0];
/* If the stack is well-formed, pop the stack until it is empty,
destroying its entries as we go. But free the stack regardless
of whether it is well-formed. */
if (yystack.yyitems)
{
yyGLRState** yystates = yystack.yytops.yystates;
if (yystates)
while (yystates[0])
{
yyGLRState *yys = yystates[0];
]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = yys->yyloc;]]
)[ yydestruct ("Error: popping",
yystos[yys->yylrState],
&yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[);
yystates[0] = yys->yypred;
yystack.yynextFree -= 1;
yystack.yyspaceLeft += 1;
}
}
)[ yydestruct ("Error: popping",
yystos[yys->yylrState],
&yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[);
yystates[0] = yys->yypred;
yystack.yynextFree -= 1;
yystack.yyspaceLeft += 1;
}
yyfreeGLRStack (&yystack);
}
yyfreeGLRStack (&yystack);
return yyresult;
}