4 Commits

Author	SHA1	Message	Date
Volodymyr Sapsai	210f0e880b	Track skipped files in dependency scanning. ... It's possible for a header to be a symlink to another header. In this case both will be represented by clang::FileEntry with the same UID and they'll use the same clang::HeaderFileInfo. If you include both headers and use some single-inclusion mechanism like a header guard or #import, one header will get a FileChanged callback, and another FileSkipped. So that we get an accurate dependency file, we therefore need to also implement the FileSkipped callback in dependency scanning. Patch by Pete Cooper. Reviewers: bruno, pete Reviewed By: bruno Subscribers: cfe-commits, jkorous, vsapsai Differential Revision: https://reviews.llvm.org/D30881 llvm-svn: 331319	2018-05-01 23:59:33 +00:00
Reid Kleckner	1ace0049fe	Add test coverage for recent behavior change in GNU line marker pre-processing ... llvm-svn: 303642	2017-05-23 16:09:13 +00:00
Reid Kleckner	eb00ee07be	Give files from #line the characteristics of the current file ... This allows #line directives to appear in system headers that have code that clang would normally warn on. This is compatible with GCC, which is easy to test by running `gcc -E`. Fixes PR30752 llvm-svn: 303582	2017-05-22 21:42:58 +00:00
Richard Smith	8acadcb84b	Add -isystem-prefix and -ino-system-prefix arguments, which can be used to ... override whether headers are system headers by checking for prefixes of the header name specified in the #include directive. This allows warnings to be disabled for third-party code which is found in specific subdirectories of include paths. llvm-svn: 158418	2012-06-13 20:27:03 +00:00