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13.67.3 sigblock

Documentation:

• https://www.gnu.org/software/libc/manual/html_node/BSD-Signal-Handling.html,
• man sigblock.

Gnulib module: —

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

• This function is missing on some platforms: Minix 3.1.8, Solaris 11.4, Cygwin 2.9, mingw, MSVC 14.