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Commit a35d67df authored by Ted Kremenek's avatar Ted Kremenek
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Implement built-in macro '__has_warning', which allows one to query if a... 

Implement built-in macro '__has_warning', which allows one to query if a warning flag is valid.  Fixes <rdar://problem/10263428>.

llvm-svn: 141802
parent 205d0445
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