http://llvm.org/bugs/show_bug.cgi?id=8787
Summary: Support/Regex is unaware of LLP64(Win64)
Product: libraries
Version: trunk
Platform: PC
OS/Version: Windows XP
Status: NEW
Severity: normal
Priority: P
Component: Support Libraries
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
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))
--
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