preprocessing: gcc supports #line 0. So, treat this
as a gcc supported extension with usual treatment
with -pedantic (warn) and -pedantic-errors (error).
// rdar://11550996


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159226 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed