Currently -fms-extensions controls this behavior, which doesn't make
much sense. It means we can't identify what is and isn't a system header
when compiling our own preprocessed output, because #line doesn't
represent this information.
If someone is feeding Clang's preprocessed output to another compiler,
they can use this flag.
Fixes PR20553.
Reviewers: rsmith
Differential Revision: http://reviews.llvm.org/D5217
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@230587 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This fixes PR17145 and avoids unknown pragma warnings.
This change does not attempt to map MSVC warning numbers to clang
warning flags. Perhaps in the future we will implement a mapping for
some common subset of Microsoft warnings, but for now we don't.
Reviewers: rsmith
CC: cfe-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D1652
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190726 91177308-0d34-0410-b5e6-96231b3b80d8
This was a suggestion by Jordan Rose since the documented format for these pragmas is without the parentheses. At the same time, I've increased test coverage too for the preprocessed output.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179771 91177308-0d34-0410-b5e6-96231b3b80d8
handle raw string literals here. C++11 doesn't yet specify how they will
behave, but discussion on core suggests that we should just strip off
everything but the r-char-sequence.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176779 91177308-0d34-0410-b5e6-96231b3b80d8
1. Teach Lexer that pragma lexers are like macro expansions at EOF.
2. Treat pragmas like #define/#undef when printing.
3. If we just printed a directive, add a newline before any more tokens.
(4. Miscellaneous cleanup in PrintPreprocessedOutput.cpp)
PR10594 and <rdar://problem/11562490> (two separate related problems)
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spelled (#pragma, _Pragma, __pragma). In -E mode, use that information
to add appropriate newlines when translating _Pragma and __pragma into
#pragma, like GCC does. Fixes <rdar://problem/8412013>.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113553 91177308-0d34-0410-b5e6-96231b3b80d8
Reid Kleckner