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Fix initialization-order bug in llvm::Support::TimeValue. TimeValue::now() is explicitly called during module initialization of lib/Support/Process.cpp. It reads the field of global object PosixZeroTime, which is not guaranteed to be initialized at this point. Found by AddressSanitizer with -fsanitize=init-order option.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175509 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alexey Samsonov
2013-02-19 11:35:39 +00:00
parent 6ecccdbb2b
commit 9f306bdc70
3 changed files with 18 additions and 9 deletions
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3
lib/Support/Unix/TimeValue.inc
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@@ -48,7 +48,8 @@ TimeValue TimeValue::now() {
}
return TimeValue(
static_cast<TimeValue::SecondsType>( the_time.tv_sec + PosixZeroTime.seconds_ ),
static_cast<TimeValue::SecondsType>( the_time.tv_sec +
PosixZeroTimeSeconds ),
static_cast<TimeValue::NanoSecondsType>( the_time.tv_usec *
NANOSECONDS_PER_MICROSECOND ) );
}