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[LLD] Make lastOrdinal atomic to avoid race conditions. 

No test case: We don't have a good way to test race conditions.

llvm-svn: 237857
This commit is contained in:
Lang Hames 2015-05-20 23:44:37 +00:00
parent cbab79a4f8
commit b103c0321f
1 changed files with 2 additions and 1 deletions
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3
lld/include/lld/Core/Simple.h
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@ -23,6 +23,7 @@
#include "lld/Core/UndefinedAtom.h"
#include "llvm/ADT/ilist.h"
#include "llvm/ADT/ilist_node.h"
#include <atomic>
namespace lld {
@ -206,7 +207,7 @@ namespace lld {
class SimpleDefinedAtom : public DefinedAtom {
public:
explicit SimpleDefinedAtom(const File &f) : _file(f) {
static uint32_t lastOrdinal = 0;
static std::atomic<uint32_t> lastOrdinal(0);
_ordinal = lastOrdinal++;
_references.setAllocator(&f.allocator());
}