---

10.1010 setjmp

POSIX specification:
https://pubs.opengroup.org/onlinepubs/9699919799/functions/setjmp.html

Gnulib module: —

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

• POSIX does not specify whether setjmp saves the signal mask in the jmp_buf. It does on BSD platforms, and on glibc platforms when _BSD_SOURCE (and/or _DEFAULT_SOURCE on glibc >= 2.19) is defined; in this case setjmp behaves like sigsetjmp(.,1), and functions _setjmp and _longjmp are available that don’t save or restore the signal mask. On System V platforms (excluding HP-UX), and on glibc platforms by default, setjmp doesn’t save the signal mask.