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 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

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