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() 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
       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
       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".

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 5.04 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)