[cfe-commits] [patch][pr14766] Reject invalid redeclarations of extern C functions and variables

[Rafael Espíndola]

Thanks for the review on IRC!

An updated patch is attached. CCing dgregor since this makes us reject in C:

void test() {
  int outer8(int);
}
static float outer8(float);

which I think is invalid, but we had a test for in
test/Sema/function-redecl.c since r65792.

Cheers,
Rafael
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