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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 | f5a45ea642b826a2312aa604a2e3fbf5269fc077 (patch) | |
| tree | 32cf5e1e735f950fac2fc4bfdbf87b3a46f44121 | |
| parent | 31672b1745195d709b641f1c0f44e203742fa73b (diff) | |
Adding verbiage to the Language Extensions document about __has_include and __has_include_next only being allowed within preprocessor directives.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172643 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | docs/LanguageExtensions.rst | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/docs/LanguageExtensions.rst b/docs/LanguageExtensions.rst index be54402fd3..2abbea7da6 100644 --- a/docs/LanguageExtensions.rst +++ b/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: |