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InstrProf: Change magic number to have non-text characters

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Include non-text characters in the magic number so that text files can't
match.

<rdar://problem/15950346>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204513 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2014-03-21 20:42:37 +00:00
parent bc2740a598
commit 813d0a2761
3 changed files with 10 additions and 10 deletions
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16
lib/ProfileData/InstrProfReader.cpp
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@ -90,14 +90,14 @@ RawInstrProfReader::RawInstrProfReader(std::unique_ptr<MemoryBuffer> DataBuffer)
static uint64_t getRawMagic() {
return
uint64_t('l') << 56 |
uint64_t('p') << 48 |
uint64_t('r') << 40 |
uint64_t('o') << 32 |
uint64_t('f') << 24 |
uint64_t('r') << 16 |
uint64_t('a') << 8 |
uint64_t('w');
uint64_t(255) << 56 |
uint64_t('l') << 48 |
uint64_t('p') << 40 |
uint64_t('r') << 32 |
uint64_t('o') << 24 |
uint64_t('f') << 16 |
uint64_t('r') << 8 |
uint64_t(129);
}
bool RawInstrProfReader::hasFormat(const MemoryBuffer &DataBuffer) {