ABORT(3) Linux Programmer's Manual ABORT(3) NAME abort - cause abnormal process termination SYNOPSIS #include 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)