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| author | Gregory P. Smith <greg@krypto.org> | 2012-12-11 01:45:54 (GMT) |
|---|---|---|
| committer | Gregory P. Smith <greg@krypto.org> | 2012-12-11 01:45:54 (GMT) |
| commit | 64ab35e11d9e2ad55f8a9ee69515f8901e184b59 (patch) | |
| tree | 155f4ed7e32974b28743c795f4bcb3f21421db86 /Modules/_sre.c | |
| parent | 33b9b71e8dbddf081bd5e7dbf65166ca5d4d75c2 (diff) | |
| download | cpython-64ab35e11d9e2ad55f8a9ee69515f8901e184b59.zip cpython-64ab35e11d9e2ad55f8a9ee69515f8901e184b59.tar.gz cpython-64ab35e11d9e2ad55f8a9ee69515f8901e184b59.tar.bz2 | |
1 << 31 is invalid for signed integers, fix it by making 1 unsigned.
Found by Clang trunk's Undefined-Behavior Sanitizer. [more to come]
Diffstat (limited to 'Modules/_sre.c')
| -rw-r--r-- | Modules/_sre.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Modules/_sre.c b/Modules/_sre.c index baf5f6a..a5a6b1e 100644 --- a/Modules/_sre.c +++ b/Modules/_sre.c @@ -459,7 +459,7 @@ SRE_CHARSET(SRE_CODE* set, SRE_CODE ch) } else { /* <CHARSET> <bitmap> (32 bits per code word) */ - if (ch < 256 && (set[ch >> 5] & (1 << (ch & 31)))) + if (ch < 256 && (set[ch >> 5] & (1u << (ch & 31)))) return ok; set += 8; } @@ -498,7 +498,7 @@ SRE_CHARSET(SRE_CODE* set, SRE_CODE ch) block = -1; set += 64; if (block >=0 && - (set[block*8 + ((ch & 255)>>5)] & (1 << (ch & 31)))) + (set[block*8 + ((ch & 255)>>5)] & (1u << (ch & 31)))) return ok; set += count*8; } |