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548f467fa1
GCC 11 introduces a -Wstringop-overflow warning for calls to functions with an array argument passed as a pointer to memory not large enough for that array. This includes the __sigsetjmp calls from pthread_cleanup_push macros, because those use a structure in __pthread_unwind_buf_t, which has a common initial subsequence with jmp_buf but does not include the saved signal mask; this is OK in this case because the second argument to __sigsetjmp is 0 so the signal mask is not accessed. To avoid this warning, use a function alias __sigsetjmp_cancel with first argument an array of exactly the type used in the calls to the function, if using GCC 11 or later. With older compilers, continue to use __sigsetjmp with a cast, to avoid any issues with compilers predating the returns_twice attribute not applying the same special handling to __sigsetjmp_cancel as to __sigsetjmp. Tested with build-many-glibcs.py for arm-linux-gnueabi that this fixes the testsuite build failures. |
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| auxv.h | ||
| cdefs.h | ||
| dir.h | ||
| file.h | ||
| ioctl.h | ||
| mman.h | ||
| param.h | ||
| queue.h | ||
| select.h | ||
| single_threaded.h | ||
| syslog.h | ||
| sysmacros.h | ||
| uio.h | ||
| xattr.h | ||