mbenfield added a comment. In D100581#2727357 <https://reviews.llvm.org/D100581#2727357>, @dblaikie wrote:
> > Got a link/examples of cases GCC does and doesn't warn about? I'd assume it'd > have something to do with the triviality or non-triviality of certain > operations of the nonscalar types (eg: is the type trivially > assignable/trivially destructible) This doesn't seem to be what determines it. AFAICT it never warns for a struct in C++. However, if I do gcc -fsyntax-only -Wunused-but-set-variable clang/test/Sema/vector-gcc-compat.c I get warnings for the variables v2i64_r and v4i32_r. But if I do g++ -fsyntax-only -Wunused-but-set-variable clang/test/Sema/vector-gcc-compat.c I only get warnings for the variable v2i64_r. I will investigate a little more tomorrow. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D100581/new/ https://reviews.llvm.org/D100581 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
