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Diffstat (limited to 'clang/docs/LanguageExtensions.html')
| -rw-r--r-- | clang/docs/LanguageExtensions.html | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/clang/docs/LanguageExtensions.html b/clang/docs/LanguageExtensions.html index d8a57df4865..ef57a659c4d 100644 --- a/clang/docs/LanguageExtensions.html +++ b/clang/docs/LanguageExtensions.html @@ -300,6 +300,23 @@ and will issue a warning if used in the top-level compilation file. A warning will also be issued if an absolute path is used in the file argument.</p> + +<!-- ======================================================================= --> +<h3><a name="__has_warning">__has_warning</a></h3> +<!-- ======================================================================= --> + +<p>This function-like macro takes a string literal that represents a command + line option for a warning and returns true if that is a valid warning + option.</p> + +<blockquote> +<pre> +#if __has_warning("-Wformat") +... +#endif +</pre> +</blockquote> + <!-- ======================================================================= --> <h2 id="builtinmacros">Builtin Macros</h2> <!-- ======================================================================= --> |
