3 Commits

Author	SHA1	Message	Date
Rafael Espindola	208b5c0fa5	New fix for pr17535. ... This is a fixed version of r193161. In order to handle void foo() __attribute__((alias("bar"))); void bar() {} void zed() __attribute__((alias("foo"))); it is not enough to delay aliases to the end of the TU, we have to do two passes over them to find if they are defined or not. This can be implemented by producing alias as we go and just doing the second pass at the end. This has the advantage that other parts of clang that were expecting alias to be processed in order don't have to be changed. This patch also handles cyclic aliases. llvm-svn: 193188	2013-10-22 19:26:13 +00:00
Rafael Espindola	6956d58722	Revert "This patch causes clang to reject alias attributes that point to undefined names. For example, with this patch we now reject" ... This reverts commit r193161. It broke void foo() __attribute__((alias("bar"))); void bar() {} void zed() __attribute__((alias("foo"))); Looks like we have to fix pr17639 first :-( llvm-svn: 193162	2013-10-22 14:23:09 +00:00
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