https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117210
Dimitry Andric <dimitry at andric dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dimitry at andric dot com
--- Comment #6 from Dimitry Andric <dimitry at andric dot com> ---
It's conditionalized on _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC in <cstdlib>
namespace std
{
#if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
using ::__gnu_cxx::lldiv_t;
#endif
using ::__gnu_cxx::_Exit;
#if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
using ::__gnu_cxx::llabs;
using ::__gnu_cxx::div;
using ::__gnu_cxx::lldiv;
#endif
using ::__gnu_cxx::atoll;
using ::__gnu_cxx::strtof;
using ::__gnu_cxx::strtoll;
using ::__gnu_cxx::strtoull;
using ::__gnu_cxx::strtold;
} // namespace std
In the FreeBSD port I see in
/usr/local/lib/gcc15/include/c++/x86_64-portbld-freebsd15.0/bits/os_defines.h:
#define _GLIBCXX_USE_C99_DYNAMIC (!(__ISO_C_VISIBLE >= 1999))
#define _GLIBCXX_USE_C99_LONG_LONG_CHECK 1
#if _GLIBCXX_USE_C99_DYNAMIC || !defined __LONG_LONG_SUPPORTED
#define _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC 1
#else
#define _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC 0
#endif
I think __LONG_LONG_SUPPORTED is supposed to come out of a base system header,
/usr/include/sys/cdefs.h, and similar for __ISO_C_VISIBLE.
However, this piece of code in FreeBSD's os_defines.h changed not that long
ago, in commit r15-3904-ge23e5370d58 for bug 116859:
--- a/libstdc++-v3/config/os/bsd/freebsd/os_defines.h
+++ b/libstdc++-v3/config/os/bsd/freebsd/os_defines.h
@@ -36,8 +36,16 @@
#define _GLIBCXX_USE_C99_CHECK 1
#define _GLIBCXX_USE_C99_DYNAMIC (!(__ISO_C_VISIBLE >= 1999))
#define _GLIBCXX_USE_C99_LONG_LONG_CHECK 1
-#define _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC (_GLIBCXX_USE_C99_DYNAMIC ||
!defined __LONG_LONG_SUPPORTED)
+#if _GLIBCXX_USE_C99_DYNAMIC || !defined __LONG_LONG_SUPPORTED
+#define _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC 1
+#else
+#define _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC 0
+#endif
#define _GLIBCXX_USE_C99_FLOAT_TRANSCENDENTALS_CHECK 1
-#define _GLIBCXX_USE_C99_FLOAT_TRANSCENDENTALS_DYNAMIC defined _XOPEN_SOURCE
+#ifdef _XOPEN_SOURCE
+#define _GLIBCXX_USE_C99_FLOAT_TRANSCENDENTALS_DYNAMIC 1
+#else
+#define _GLIBCXX_USE_C99_FLOAT_TRANSCENDENTALS_DYNAMIC 0
+#endif
#endif
There is a good chance this commit is the reason.
