diff options
| -rw-r--r-- | clang/docs/LanguageExtensions.html | 6 | ||||
| -rw-r--r-- | clang/lib/Lex/PPMacroExpansion.cpp | 1 | ||||
| -rw-r--r-- | clang/test/Lexer/has_feature_cxx0x.cpp | 10 | ||||
| -rw-r--r-- | clang/www/cxx_status.html | 5 |
4 files changed, 21 insertions, 1 deletions
diff --git a/clang/docs/LanguageExtensions.html b/clang/docs/LanguageExtensions.html index 40145a47396..9da30b9c0d9 100644 --- a/clang/docs/LanguageExtensions.html +++ b/clang/docs/LanguageExtensions.html @@ -767,7 +767,11 @@ enabled.</p> <p>Use <tt>__has_feature(cxx_decltype)</tt> or <tt>__has_extension(cxx_decltype)</tt> to determine if support for the -<tt>decltype()</tt> specifier is enabled.</p> +<tt>decltype()</tt> specifier is enabled. C++11's <tt>decltype</tt> +does not require type-completeness of a function call expression. +Use <tt>__has_feature(cxx_decltype_incomplete_return_types)</tt> +or <tt>__has_extension(cxx_decltype_incomplete_return_types)</tt> +to determine if support for this feature is enabled.</p> <h4 id="cxx_default_function_template_args">C++11 default template arguments in function templates</h4> diff --git a/clang/lib/Lex/PPMacroExpansion.cpp b/clang/lib/Lex/PPMacroExpansion.cpp index 295e9d05a62..fe7058570ef 100644 --- a/clang/lib/Lex/PPMacroExpansion.cpp +++ b/clang/lib/Lex/PPMacroExpansion.cpp @@ -649,6 +649,7 @@ static bool HasFeature(const Preprocessor &PP, const IdentifierInfo *II) { .Case("cxx_auto_type", LangOpts.CPlusPlus0x) .Case("cxx_constexpr", LangOpts.CPlusPlus0x) .Case("cxx_decltype", LangOpts.CPlusPlus0x) + .Case("cxx_decltype_incomplete_return_types", LangOpts.CPlusPlus0x) .Case("cxx_default_function_template_args", LangOpts.CPlusPlus0x) .Case("cxx_defaulted_functions", LangOpts.CPlusPlus0x) .Case("cxx_delegating_constructors", LangOpts.CPlusPlus0x) diff --git a/clang/test/Lexer/has_feature_cxx0x.cpp b/clang/test/Lexer/has_feature_cxx0x.cpp index 30e150bcb64..8e0222dcecd 100644 --- a/clang/test/Lexer/has_feature_cxx0x.cpp +++ b/clang/test/Lexer/has_feature_cxx0x.cpp @@ -40,6 +40,16 @@ int no_decltype(); // CHECK-NO-0X: no_decltype +#if __has_feature(cxx_decltype_incomplete_return_types) +int has_decltype_incomplete_return_types(); +#else +int no_decltype_incomplete_return_types(); +#endif + +// CHECK-0X: has_decltype_incomplete_return_types +// CHECK-NO-0X: no_decltype_incomplete_return_types + + #if __has_feature(cxx_auto_type) int has_auto_type(); #else diff --git a/clang/www/cxx_status.html b/clang/www/cxx_status.html index 8305b73ec65..439044af768 100644 --- a/clang/www/cxx_status.html +++ b/clang/www/cxx_status.html @@ -120,6 +120,11 @@ with clang; other versions have not been tested.</p> <td class="full" align="center">Clang 2.9</td> </tr> <tr> + <td> Incomplete return types</td> + <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3276.pdf">N3276</a></td> + <td class="svn" align="center">SVN</td> + </tr> + <tr> <td>Right angle brackets</td> <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1757.html">N1757</a></td> <td class="full" align="center">Clang 2.9</td> |
