Description
| Bugzilla Link | 8787 |
| Resolution | WONTFIX |
| Resolved on | Nov 06, 2014 15:11 |
| Version | trunk |
| OS | Windows XP |
| Blocks | llvm/llvm-bugzilla-archive#9100 |
| Reporter | LLVM Bugzilla Contributor |
| CC | @rnk |
Extended Description
in regexec.c:
/* macros for manipulating states, small version /
#define states long / i32 */
#define states1 states
#include "regengine.inc"
/* now undo things */
#undef states
/* macros for manipulating states, large version */
#define states char *
if (g->nstates <= (long)(CHAR_BIT*sizeof(states1)) ...
"states1" is expanded as "char *", and the condition becomes true
even if nstates > 32. Then regex might behave buggy.
Workaround:
--- a/lib/Support/regexec.c
+++ b/lib/Support/regexec.c
@@ -54,8 +54,8 @@
#include "regex2.h"
/* macros for manipulating states, small version /
-#define states long
-#define states1 states / for later use in llvm_regexec() decision /
+#define states1 long / for later use in llvm_regexec() decision */
+#define states states1
#define CLEAR(v) ((v) = 0)
#define SET0(v, n) ((v) &= ~((unsigned long)1 << (n)))
#define SET1(v, n) ((v) |= (unsigned long)1 << (n))