https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119590
Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Last reconfirmed| |2025-04-02
Status|UNCONFIRMED |NEW
--- Comment #1 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
I can also reproduce this, using a compiler built against an earlier SDK, but
compiling against macOS 15.4 SDK:
$ cat a.c
#include <sys/signal.h>
$ g++-14 a.c
In file included from
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/machine/_structs.h:35,
from
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/arm/_mcontext.h:36,
from
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/machine/_mcontext.h:34,
from
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/sys/signal.h:146,
from a.c:1:
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:627:35:
error: expected primary-expression before 'unsigned'
627 | } __attribute__((aligned(_Alignof(unsigned int))));
| ^~~~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:627:26:
error: '_Alignof' was not declared in this scope
627 | } __attribute__((aligned(_Alignof(unsigned int))));
| ^~~~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:633:35:
error: expected primary-expression before 'unsigned'
633 | } __attribute__((aligned(_Alignof(unsigned int))));
| ^~~~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:633:26:
error: '_Alignof' was not declared in this scope
633 | } __attribute__((aligned(_Alignof(unsigned int))));
| ^~~~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:639:35:
error: expected primary-expression before 'unsigned'
639 | } __attribute__((aligned(_Alignof(unsigned int))));
| ^~~~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:639:26:
error: '_Alignof' was not declared in this scope
639 | } __attribute__((aligned(_Alignof(unsigned int))));
| ^~~~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:645:35:
error: expected primary-expression before 'unsigned'
645 | } __attribute__((aligned(_Alignof(unsigned int))));
| ^~~~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:645:26:
error: '_Alignof' was not declared in this scope
645 | } __attribute__((aligned(_Alignof(unsigned int))));
| ^~~~~~~~
