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| author | Jonathan Wakely <jwakely@redhat.com> | 2017-10-20 19:02:19 +0100 |
|---|---|---|
| committer | Jonathan Wakely <redi@gcc.gnu.org> | 2017-10-20 19:02:19 +0100 |
| commit | 253e8d21509d7685ce9d515061305cdf604cc005 (patch) | |
| tree | 52ac69dd374b7eaaa3a9115c5083d58842332b1f | |
| parent | b0926447b568fbcccd8edb6c4173864552711de0 (diff) | |
| download | gcc-253e8d21509d7685ce9d515061305cdf604cc005.zip gcc-253e8d21509d7685ce9d515061305cdf604cc005.tar.gz gcc-253e8d21509d7685ce9d515061305cdf604cc005.tar.bz2 | |
Define __cpp_lib_byte feature-test macro
* include/c_global/cstddef: Define __cpp_lib_byte feature-test macro.
* testsuite/18_support/byte/requirements.cc: Check macro.
From-SVN: r253952
| -rw-r--r-- | libstdc++-v3/ChangeLog | 5 | ||||
| -rw-r--r-- | libstdc++-v3/include/c_global/cstddef | 4 | ||||
| -rw-r--r-- | libstdc++-v3/testsuite/18_support/byte/requirements.cc | 6 |
3 files changed, 14 insertions, 1 deletions
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index ba43a4b..179361d 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,3 +1,8 @@ +2017-10-20 Jonathan Wakely <jwakely@redhat.com> + + * include/c_global/cstddef: Define __cpp_lib_byte feature-test macro. + * testsuite/18_support/byte/requirements.cc: Check macro. + 2017-10-19 Jonathan Wakely <jwakely@redhat.com> * testsuite/experimental/filesystem/iterators/ diff --git a/libstdc++-v3/include/c_global/cstddef b/libstdc++-v3/include/c_global/cstddef index 09754ee..11d268b 100644 --- a/libstdc++-v3/include/c_global/cstddef +++ b/libstdc++-v3/include/c_global/cstddef @@ -57,9 +57,11 @@ namespace std } #endif -#if __cplusplus > 201402L +#if __cplusplus >= 201703L namespace std { +#define __cpp_lib_byte 201603 + /// std::byte enum class byte : unsigned char {}; diff --git a/libstdc++-v3/testsuite/18_support/byte/requirements.cc b/libstdc++-v3/testsuite/18_support/byte/requirements.cc index 4cb05df..74c8b64 100644 --- a/libstdc++-v3/testsuite/18_support/byte/requirements.cc +++ b/libstdc++-v3/testsuite/18_support/byte/requirements.cc @@ -20,6 +20,12 @@ #include <cstddef> +#ifndef __cpp_lib_byte +# error "Feature-test macro for byte missing" +#elif __cpp_lib_byte != 201603 +# error "Feature-test macro for byte has wrong value" +#endif + static_assert( sizeof(std::byte) == sizeof(unsigned char) ); static_assert( alignof(std::byte) == alignof(unsigned char) ); |