Rafael Espindola 0fad0d7724 This patch causes clang to reject alias attributes that point to undefined ...

names. For example, with this patch we now reject

void f1(void) __attribute__((alias("g1")));

This patch is implemented in CodeGen. It is quiet a bit simpler and more
compatible with gcc than implementing it in Sema. The downside is that the
errors only fire during -emit-llvm.

llvm-svn: 193161

2013-10-22 13:51:06 +00:00

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