[PATCH] D52248: [SEMA] ignore duplicate declaration specifiers from typeof exprs

[Richard Smith - zygoloid via Phabricator via cfe-commits]

rsmith added a comment.

The right way to produce diagnostics under pedantic mode is to model them as Extension or ExtWarn in the .td file, not by checking the Pedantic diagnostic option directly. If this is an intentional GNU extension too, that makes things a bit more complex (one approach would be to have two diagnostics, one for "this is ill-formed" and another for "this is a GNU extension").


Repository:
  rC Clang

https://reviews.llvm.org/D52248