[PATCH] D15926: Do not print certain warnings when input is a header.

[Erik Verbruggen via cfe-commits]

erikjv created this revision.
erikjv added reviewers: klimek, rsmith.
erikjv added a subscriber: cfe-commits.

When generating pre-compiled headers, or when opening a header file with
libclang, suppress the warnings "#pragma once in main file" and
"#include_next in primary source file".
    
Fixes PR16686 and PR24390.


http://reviews.llvm.org/D15926

Files:
  include/clang/Basic/SourceManager.h
  include/clang/Frontend/FrontendOptions.h
  lib/Frontend/CompilerInstance.cpp
  lib/Frontend/CompilerInvocation.cpp
  lib/Frontend/FrontendActions.cpp
  lib/Lex/PPDirectives.cpp
  lib/Lex/PPMacroExpansion.cpp
  lib/Lex/Pragma.cpp
  test/Preprocessor/header_is_main_file.c

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