[cfe-commits] [Patch] correct scope token location when parsing GNU attributes

[Michael Han]

Hi,

Attached patch correct the source location of scopes when parsing and creating an attribute in GNU syntax: since the GNU syntax attribute does not have scope tokens, we shall use a newly created SourceLocation() instead of reuse the attribute token source location. As a result, when emitting diagnostics the valid of the locations needs to be checked first before used.

Michael
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