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| author | Aaron Ballman <aaron@aaronballman.com> | 2013-01-16 19:51:19 +0000 |
|---|---|---|
| committer | Aaron Ballman <aaron@aaronballman.com> | 2013-01-16 19:51:19 +0000 |
| commit | 1f0fa91bedbefd02c9298ad52291313bf1099a0b (patch) | |
| tree | a7f08f9a55746af2a172816cb8fa057aba47d336 | |
| parent | da09857394818160c4e51c467cdb9c9b3d589e80 (diff) | |
| download | bcm5719-llvm-1f0fa91bedbefd02c9298ad52291313bf1099a0b.tar.gz bcm5719-llvm-1f0fa91bedbefd02c9298ad52291313bf1099a0b.zip | |
Adding verbiage to the Language Extensions document about __has_include and __has_include_next only being allowed within preprocessor directives.
llvm-svn: 172643
| -rw-r--r-- | clang/docs/LanguageExtensions.rst | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/clang/docs/LanguageExtensions.rst b/clang/docs/LanguageExtensions.rst index be54402fd3f..2abbea7da69 100644 --- a/clang/docs/LanguageExtensions.rst +++ b/clang/docs/LanguageExtensions.rst @@ -140,7 +140,8 @@ Include File Checking Macros Not all developments systems have the same include files. The :ref:`langext-__has_include` and :ref:`langext-__has_include_next` macros allow you to check for the existence of an include file before doing a possibly -failing ``#include`` directive. +failing ``#include`` directive. Include file checking macros must be used +as expressions in #if or #elif preprocessing directives. .. _langext-__has_include: |
