abort

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

NAME
       abort - cause abnormal process termination

SYNOPSIS
       #include <stdlib.h>

       void abort(void);

DESCRIPTION
       The  abort()  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 sig-
       nal for a second time.

RETURN VALUE
       The abort() function never returns.

ATTRIBUTES
       For  an  explanation  of  the  terms  used   in   this   section,   see
       attributes(7).

       +----------+---------------+---------+
       |Interface | Attribute     | Value   |
       +----------+---------------+---------+
       |abort()   | Thread safety | MT-Safe |
       +----------+---------------+---------+
NOTES
       Up  until  glibc  2.26, if the abort() function caused process termina-
       tion, all open streams were closed and  flushed  (as  with  fclose(3)).
       However,  in some cases this could result in deadlocks and data corrup-
       tion.  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".

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

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

COLOPHON
       This  page  is  part of release 4.15 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
       https://www.kernel.org/doc/man-pages/.

GNU                               2017-11-26                          ABORT(3)
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