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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-24 04:52:22 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-24 04:52:22 +0000
commit3d08cd331c1adcf0d917392f7e527b3f00511748 (patch)
tree312f0d1e1632f48862f044b8bb87e602dcffb5f9 /man3/assert_perror.3
parentAdding debian version 6.7-2. (diff)
downloadmanpages-3d08cd331c1adcf0d917392f7e527b3f00511748.tar.xz
manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.zip
Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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-'\" t
-.\" Copyright (C) 2002 Andries Brouwer <aeb@cwi.nl>
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.\" This replaces an earlier man page written by Walter Harms
-.\" <walter.harms@informatik.uni-oldenburg.de>.
-.\"
-.TH assert_perror 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-assert_perror \- test errnum and abort
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */"
-.B #include <assert.h>
-.P
-.BI "void assert_perror(int " errnum );
-.fi
-.SH DESCRIPTION
-If the macro
-.B NDEBUG
-was defined at the moment
-.I <assert.h>
-was last included, the macro
-.BR assert_perror ()
-generates no code, and hence does nothing at all.
-Otherwise, the macro
-.BR assert_perror ()
-prints an error message to standard error and terminates the program
-by calling
-.BR abort (3)
-if
-.I errnum
-is nonzero.
-The message contains the filename, function name and
-line number of the macro call, and the output of
-.IR strerror(errnum) .
-.SH RETURN VALUE
-No value is returned.
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface Attribute Value
-T{
-.na
-.nh
-.BR assert_perror ()
-T} Thread safety MT-Safe
-.TE
-.SH STANDARDS
-GNU.
-.SH BUGS
-The purpose of the assert macros is to help programmers find bugs in
-their programs, things that cannot happen unless there was a coding mistake.
-However, with system or library calls the situation is rather different,
-and error returns can happen, and will happen, and should be tested for.
-Not by an assert, where the test goes away when
-.B NDEBUG
-is defined,
-but by proper error handling code.
-Never use this macro.
-.SH SEE ALSO
-.BR abort (3),
-.BR assert (3),
-.BR exit (3),
-.BR strerror (3)