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* data/glr.c (yyexpandGLRStack): Catch an off-by-one error that

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led to a segmentation fault in GNU Pascal.  Problem reported
by Waldek Hebisch.
This commit is contained in:
Paul Eggert
2006-02-27 19:50:59 +00:00
parent 841a773708
commit 18d9185cae
2 changed files with 7 additions and 1 deletions
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ChangeLog
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@@ -1,3 +1,9 @@
2006-02-27 Paul Eggert <eggert@cs.ucla.edu>
* data/glr.c (yyexpandGLRStack): Catch an off-by-one error that
led to a segmentation fault in GNU Pascal. Problem reported
by Waldek Hebisch.
2006-02-21 Joel E. Denny <jdenny@ces.clemson.edu>
* doc/bison.texinfo (Mid-Rule Actions): Explain how to bury a

2
data/glr.c
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@@ -1190,7 +1190,7 @@ yyexpandGLRStack (yyGLRStack* yystackp)
size_t yysize, yynewSize;
size_t yyn;
yysize = yystackp->yynextFree - yystackp->yyitems;
if (YYMAXDEPTH <= yysize)
if (YYMAXDEPTH - YYHEADROOM < yysize)
yyMemoryExhausted (yystackp);
yynewSize = 2*yysize;
if (YYMAXDEPTH < yynewSize)