[PATCH] [PATCH] [CONCEPTS] Parsing of concept keyword

[Richard Smith]

================
Comment at: lib/Sema/DeclSpec.cpp:899
@@ +898,3 @@
+  if (Concept_specified) {
+    DiagID = diag::ext_duplicate_declspec;
+    PrevSpec = "concept";
----------------
hubert.reinterpretcast wrote:
> This is still just a warning without `-pedantic-errors`; I'm okay with it if Richard is.
This is consistent with how we treat other violations of the same rule; it seems fine to me.

http://reviews.llvm.org/D10528

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