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| author | Richard Smith <richard-llvm@metafoo.co.uk> | 2012-08-24 23:29:28 +0000 |
|---|---|---|
| committer | Richard Smith <richard-llvm@metafoo.co.uk> | 2012-08-24 23:29:28 +0000 |
| commit | 1144af3c9b4da48cd581156e05b24261c8de366a (patch) | |
| tree | 49da576a97bfdab702528643450798baa54c790f /include/llvm/ADT/PointerIntPair.h | |
| parent | cac59d8ae815596f4f6b77d1a5414c0591168ea5 (diff) | |
| download | llvm-1144af3c9b4da48cd581156e05b24261c8de366a.tar.gz llvm-1144af3c9b4da48cd581156e05b24261c8de366a.tar.bz2 llvm-1144af3c9b4da48cd581156e05b24261c8de366a.tar.xz | |
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
Diffstat (limited to 'include/llvm/ADT/PointerIntPair.h')
| -rw-r--r-- | include/llvm/ADT/PointerIntPair.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/llvm/ADT/PointerIntPair.h b/include/llvm/ADT/PointerIntPair.h index fcc758b43a..71c379bad5 100644 --- a/include/llvm/ADT/PointerIntPair.h +++ b/include/llvm/ADT/PointerIntPair.h @@ -135,12 +135,12 @@ template<typename PointerTy, unsigned IntBits, typename IntType> struct DenseMapInfo<PointerIntPair<PointerTy, IntBits, IntType> > { typedef PointerIntPair<PointerTy, IntBits, IntType> Ty; static Ty getEmptyKey() { - intptr_t Val = -1; + uintptr_t Val = static_cast<uintptr_t>(-1); Val <<= PointerLikeTypeTraits<PointerTy>::NumLowBitsAvailable; return Ty(reinterpret_cast<PointerTy>(Val), IntType((1 << IntBits)-1)); } static Ty getTombstoneKey() { - intptr_t Val = -2; + uintptr_t Val = static_cast<uintptr_t>(-2); Val <<= PointerLikeTypeTraits<PointerTy>::NumLowBitsAvailable; return Ty(reinterpret_cast<PointerTy>(Val), IntType(0)); } |