abort(3) — Linux manual page


ABORT(3)                  Linux Programmer's Manual                 ABORT(3)

NAME         top

       abort - cause abnormal process termination

SYNOPSIS         top

       #include <stdlib.h>

       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.

RETURN VALUE         top

       The abort() function never returns.

ATTRIBUTES         top

       For an explanation of the terms used in this section, see

       │Interface Attribute     Value   │
       │abort()   │ Thread safety │ MT-Safe │

CONFORMING TO         top

       SVr4, POSIX.1-2001, POSIX.1-2008, 4.3BSD, C89, C99.

NOTES         top

       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

       This page is part of release 5.08 of the Linux man-pages project.  A
       description of the project, information about reporting bugs, and the
       latest version of this page, can be found at

GNU                              2020-06-09                         ABORT(3)

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