InstrProf: Change magic number to have non-text characters
Include non-text characters in the magic number so that text files can't
match.
<rdar://problem/15950346>
llvm-svn: 204513
diff --git a/llvm/lib/ProfileData/InstrProfReader.cpp b/llvm/lib/ProfileData/InstrProfReader.cpp
index a95d9bc..f923ad2 100644
--- a/llvm/lib/ProfileData/InstrProfReader.cpp
+++ b/llvm/lib/ProfileData/InstrProfReader.cpp
@@ -90,14 +90,14 @@
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) {
diff --git a/llvm/test/tools/llvm-profdata/Inputs/binary.profdata b/llvm/test/tools/llvm-profdata/Inputs/binary.profdata
index 156c483..e8cef21 100644
--- a/llvm/test/tools/llvm-profdata/Inputs/binary.profdata
+++ b/llvm/test/tools/llvm-profdata/Inputs/binary.profdata
Binary files differ
diff --git a/llvm/test/tools/llvm-profdata/raw-magic-but-no-header.test b/llvm/test/tools/llvm-profdata/raw-magic-but-no-header.test
index e899ece..6db723c 100644
--- a/llvm/test/tools/llvm-profdata/raw-magic-but-no-header.test
+++ b/llvm/test/tools/llvm-profdata/raw-magic-but-no-header.test
@@ -1,6 +1,6 @@
-RUN: printf "warforpl" > %t
+RUN: printf '\201rforpl\377' > %t
RUN: not llvm-profdata show %t 2>&1 | FileCheck %s
-RUN: printf "lprofraw" > %t
+RUN: printf '\377lprofr\201' > %t
RUN: not llvm-profdata show %t 2>&1 | FileCheck %s
CHECK: error: {{.+}}: Invalid header