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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175509 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/TimeValue.cpp b/lib/Support/TimeValue.cpp
index 1a0f7bc..bd8af17 100644
--- a/lib/Support/TimeValue.cpp
+++ b/lib/Support/TimeValue.cpp
@@ -17,11 +17,16 @@
namespace llvm {
using namespace sys;
+const TimeValue::SecondsType
+ TimeValue::PosixZeroTimeSeconds = -946684800;
+const TimeValue::SecondsType
+ TimeValue::Win32ZeroTimeSeconds = -12591158400ULL;
+
const TimeValue TimeValue::MinTime = TimeValue ( INT64_MIN,0 );
const TimeValue TimeValue::MaxTime = TimeValue ( INT64_MAX,0 );
const TimeValue TimeValue::ZeroTime = TimeValue ( 0,0 );
-const TimeValue TimeValue::PosixZeroTime = TimeValue ( -946684800,0 );
-const TimeValue TimeValue::Win32ZeroTime = TimeValue ( -12591158400ULL,0 );
+const TimeValue TimeValue::PosixZeroTime = TimeValue ( PosixZeroTimeSeconds,0 );
+const TimeValue TimeValue::Win32ZeroTime = TimeValue ( Win32ZeroTimeSeconds,0 );
void
TimeValue::normalize( void ) {