[PATCH] D75844: [clang] Set begin loc on GNU attribute parsed attrs

[Nico Weber via Phabricator via cfe-commits]

thakis added a comment.

The test fails on macOS: http://45.33.8.238/macm1/6821/step_6.txt

Please take a look and revert for now if it takes a while to fix.


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  https://reviews.llvm.org/D75844/new/

https://reviews.llvm.org/D75844