implement "#pragma GCC diagnostic".  Besides being a nice feature, this
will let us test for multiple different warning modes in the same
file in regression tests.

This implements rdar://2362963, a 10-year old feature request :)


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69560 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed