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abort(3) — Linux manual page

abort(3) Library Functions Manual abort(3)

NAME top

 abort - cause abnormal process termination

LIBRARY top

 Standard C library (libc, -lc)

SYNOPSIS top

 #include <stdlib.h>
 [[noreturn]] void abort(void);

DESCRIPTION top

 The abort() function first unblocks the SIGABRT signal, and then
 raises that signal for the calling process (as though raise(3) was
 called). This results in the abnormal termination of the process
 unless the SIGABRT signal is caught and the signal handler does
 not return (see longjmp(3)).
 If the SIGABRT signal is ignored, or caught by a handler that
 returns, the abort() function will still terminate the process.
 It does this by restoring the default disposition for SIGABRT and
 then raising the signal for a second time.
 As with other cases of abnormal termination the functions
 registered with atexit(3) and on_exit(3) are not called.

RETURN VALUE top

 The abort() function never returns.

ATTRIBUTES top

 For an explanation of the terms used in this section, see
 attributes(7).
 ┌──────────────────────────────────────┬───────────────┬─────────┐
 │ Interface │ Attribute │ Value │
 ├──────────────────────────────────────┼───────────────┼─────────┤
 │ abort() │ Thread safety │ MT-Safe │
 └──────────────────────────────────────┴───────────────┴─────────┘

STANDARDS top

 C11, POSIX.1-2008.

HISTORY top

 SVr4, POSIX.1-2001, 4.3BSD, C89.
 Up until glibc 2.26, if the abort() function caused process
 termination, all open streams were closed and flushed (as with
 fclose(3)). However, in some cases this could result in deadlocks
 and data corruption. Therefore, starting with glibc 2.27, abort()
 terminates the process without flushing streams. POSIX.1 permits
 either possible behavior, saying that abort() "may include an
 attempt to effect fclose() on all open streams".

SEE ALSO top

 gdb(1), sigaction(2), assert(3), exit(3), longjmp(3), raise(3)

COLOPHON top

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 user-space interface documentation) project. Information about
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 for this manual page, see
 ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
 This page was obtained from the tarball man-pages-6.10.tar.gz
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 2025年02月02日. If you discover any rendering problems in this HTML
 version of the page, or you believe there is a better or more up-
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 man-pages@man7.org
Linux man-pages 6.10 2024年07月23日 abort(3)

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Pages that refer to this page: assert(3), assert_perror(3), mallopt(3), mcheck(3), stdio(3), signal(7), signal-safety(7)

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