diff options
| author | Jonathan Wakely <jwakely@redhat.com> | 2021-10-04 15:22:00 +0100 |
|---|---|---|
| committer | Jonathan Wakely <jwakely@redhat.com> | 2021-10-05 09:35:47 +0100 |
| commit | 96955a82f0e1624a20ea2c9953d76a20ea433c24 (patch) | |
| tree | 2dafacc6ed0021b7143504aaba470c840e73e94b | |
| parent | 9e136807c5b5476ed02a2a40a14fe0df3c0f4f18 (diff) | |
| download | gcc-96955a82f0e1624a20ea2c9953d76a20ea433c24.zip gcc-96955a82f0e1624a20ea2c9953d76a20ea433c24.tar.gz gcc-96955a82f0e1624a20ea2c9953d76a20ea433c24.tar.bz2 | |
libstdc++: Support printing volatile pointers (P1147R1)
To avoid needing to export a new symbol from the library (for now) the
new member function uses __attribute__((always_inline)).
libstdc++-v3/ChangeLog:
* include/std/ostream (operator<<(const volatile void*)):
Add new overload, as per P1147R1.
* testsuite/27_io/basic_ostream/inserters_other/char/volatile_ptr.cc:
New test.
| -rw-r--r-- | libstdc++-v3/include/std/ostream | 7 | ||||
| -rw-r--r-- | libstdc++-v3/testsuite/27_io/basic_ostream/inserters_other/char/volatile_ptr.cc | 11 |
2 files changed, 18 insertions, 0 deletions
diff --git a/libstdc++-v3/include/std/ostream b/libstdc++-v3/include/std/ostream index ddb33fe..7d39c57 100644 --- a/libstdc++-v3/include/std/ostream +++ b/libstdc++-v3/include/std/ostream @@ -251,6 +251,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { return *this << "nullptr"; } #endif +#if __cplusplus > 202002L + __attribute__((__always_inline__)) + __ostream_type& + operator<<(const volatile void* __p) + { return _M_insert(const_cast<const void*>(__p)); } +#endif + /** * @brief Extracting from another streambuf. * @param __sb A pointer to a streambuf diff --git a/libstdc++-v3/testsuite/27_io/basic_ostream/inserters_other/char/volatile_ptr.cc b/libstdc++-v3/testsuite/27_io/basic_ostream/inserters_other/char/volatile_ptr.cc new file mode 100644 index 0000000..1b1a943 --- /dev/null +++ b/libstdc++-v3/testsuite/27_io/basic_ostream/inserters_other/char/volatile_ptr.cc @@ -0,0 +1,11 @@ +// { dg-options "-std=gnu++23 -fno-inline" } +// { dg-do link { target c++23 } } + +#include <iostream> + +int main() +{ + int i = 0; + volatile void* p = &i; + std::cout << p << std::endl; +} |