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man: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 4.16 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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