From 1144af3c9b4da48cd581156e05b24261c8de366a Mon Sep 17 00:00:00 2001 From: Richard Smith Date: Fri, 24 Aug 2012 23:29:28 +0000 Subject: Fix integer undefined behavior due to signed left shift overflow in LLVM. Reviewed offline by chandlerc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162623 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Support/regexec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'lib/Support/regexec.c') diff --git a/lib/Support/regexec.c b/lib/Support/regexec.c index 007861675b..bd5e72d4c5 100644 --- a/lib/Support/regexec.c +++ b/lib/Support/regexec.c @@ -69,7 +69,7 @@ #define SETUP(v) ((v) = 0) #define onestate long #define INIT(o, n) ((o) = (unsigned long)1 << (n)) -#define INC(o) ((o) <<= 1) +#define INC(o) ((o) = (unsigned long)(o) << 1) #define ISSTATEIN(v, o) (((v) & (o)) != 0) /* some abbreviations; note that some of these know variable names! */ /* do "if I'm here, I can also be there" etc without branches */ -- cgit v1.2.3