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ASSERT_PERROR(3) Linux Programmer's Manual ASSERT_PERROR(3)
assert_perror - test errnum and abort
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <assert.h>
void assert_perror(int errnum);
If the macro NDEBUG was defined at the moment <assert.h> was last
included, the macro assert_perror() generates no code, and hence
does nothing at all. Otherwise, the macro assert_perror() prints
an error message to standard error and terminates the program by
calling abort(3) if errnum is nonzero. The message contains the
filename, function name and line number of the macro call, and
the output of strerror(errnum).
No value is returned.
For an explanation of the terms used in this section, see
attributes(7).
┌────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├────────────────┼───────────────┼─────────┤
│assert_perror() │ Thread safety │ MT-Safe │
└────────────────┴───────────────┴─────────┘
This is a GNU extension.
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 NDEBUG is defined, but by proper error
handling code. Never use this macro.
abort(3), assert(3), exit(3), strerror(3)
This page is part of release 5.10 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 2017-09-15 ASSERT_PERROR(3)
Pages that refer to this page: assert(3)
Copyright and license for this manual page
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