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ProfileData: Avoid UB when reading

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206674 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Justin Bogner 2014-04-19 00:33:12 +00:00
parent 1907b94222
commit e382065b82
1 changed files with 3 additions and 2 deletions
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5
include/llvm/ProfileData/InstrProfReader.h
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@ -222,8 +222,9 @@ public:
static std::pair<offset_type, offset_type> static std::pair<offset_type, offset_type>
ReadKeyDataLength(const unsigned char *&D) { ReadKeyDataLength(const unsigned char *&D) {
using namespace support; using namespace support;
return std::make_pair(endian::readNext<offset_type, little, unaligned>(D), offset_type KeyLen = endian::readNext<offset_type, little, unaligned>(D);
endian::readNext<offset_type, little, unaligned>(D)); offset_type DataLen = endian::readNext<offset_type, little, unaligned>(D);
return std::make_pair(KeyLen, DataLen);
} }
StringRef ReadKey(const unsigned char *D, unsigned N) { StringRef ReadKey(const unsigned char *D, unsigned N) {