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[msan] Disable DynamoRio detection. 

This code is not robust enough and triggers when simply linking with
libdynamorio.so, without any code translation at all. Disabling it is safe
(i.e. we may unpoison too much memory and see false negatives, but never false
positives).

llvm-svn: 197568
This commit is contained in:
Evgeniy Stepanov 2013-12-18 13:25:45 +00:00
parent 1b12f46464
commit a164bf5e89
1 changed files with 1 additions and 13 deletions
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14
compiler-rt/lib/msan/msan.cc
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@ -75,19 +75,7 @@ extern "C" SANITIZER_WEAK_ATTRIBUTE const int __msan_keep_going;
namespace __msan {
static bool IsRunningUnderDr() {
bool result = false;
MemoryMappingLayout proc_maps(/*cache_enabled*/true);
const sptr kBufSize = 4095;
char *filename = (char*)MmapOrDie(kBufSize, __FUNCTION__);
while (proc_maps.Next(/* start */0, /* end */0, /* file_offset */0,
filename, kBufSize, /* protection */0)) {
if (internal_strstr(filename, "libdynamorio") != 0) {
result = true;
break;
}
}
UnmapOrDie(filename, kBufSize);
return result;
return false;
}
void EnterSymbolizer() { ++is_in_symbolizer; }