{"id":7356,"date":"2022-12-20T19:37:48","date_gmt":"2022-12-20T22:37:48","guid":{"rendered":"http:\/\/lode.uno\/linux-man\/index.php\/2022\/12\/20\/assert_perror-man3\/"},"modified":"2022-12-20T19:37:48","modified_gmt":"2022-12-20T22:37:48","slug":"assert_perror-man3","status":"publish","type":"post","link":"https:\/\/lode.uno\/linux-man\/2022\/12\/20\/assert_perror-man3\/","title":{"rendered":"ASSERT_PERROR (man3)"},"content":{"rendered":"

ASSERT_PERROR<\/h1>\n

NAME<\/a>
SYNOPSIS<\/a>
DESCRIPTION<\/a>
RETURN VALUE<\/a>
ATTRIBUTES<\/a>
CONFORMING TO<\/a>
BUGS<\/a>
SEE ALSO<\/a>
COLOPHON<\/a> <\/p>\n

\n

NAME <\/a> <\/h2>\n

assert_perror \u2212 test errnum and abort<\/p>\n

SYNOPSIS <\/a> <\/h2>\n

#define _GNU_SOURCE<\/b> \/bin \/boot \/dead.letter \/dev \/etc \/home \/initrd \/lib \/lib64 \/lost+found \/media \/mnt \/opt \/proc \/release-notes.html \/release-notes.txt \/root \/run \/sbin \/srv \/sys \/tmp \/usr \/var See feature_test_macros(7) bodies\/ usr\/
#include <\/b><\/p>\n

void assert_perror(int<\/b> errnum<\/i>);<\/b><\/p>\n

DESCRIPTION <\/a> <\/h2>\n

If the macro NDEBUG<\/b> was defined at the moment <\/i> was last included, the macro assert_perror<\/b>() generates no code, and hence does nothing at all. Otherwise, the macro assert_perror<\/b>() prints an error message to standard error and terminates the program by calling abort<\/b>(3) if errnum<\/i> is nonzero. The message contains the filename, function name and line number of the macro call, and the output of strerror(errnum)<\/i>.<\/p>\n

RETURN VALUE <\/a> <\/h2>\n

No value is returned.<\/p>\n

ATTRIBUTES <\/a> <\/h2>\n

For an explanation of the terms used in this section, see attributes<\/b>(7).<\/p>\n\n\n\n
<\/td>\n <\/td>\n <\/td>\n<\/td>\n<\/td>\n <\/td>\n<\/tr>\n
<\/td>\n<\/td>\n <\/td>\n<\/td>\n<\/td>\n <\/td>\n<\/tr>\n<\/table>\n

\"Image<\/p>\n

CONFORMING TO <\/a> <\/h2>\n

This is a GNU extension.<\/p>\n

BUGS <\/a> <\/h2>\n

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<\/b> is defined, but by proper error handling code. Never use this macro.<\/p>\n

SEE ALSO <\/a> <\/h2>\n

abort<\/b>(3), assert<\/b>(3), exit<\/b>(3), strerror<\/b>(3)<\/p>\n

COLOPHON <\/a> <\/h2>\n

This page is part of release 5.10 of the Linux man-pages<\/i> 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\u2212pages\/.<\/p>\n

\n","protected":false},"excerpt":{"rendered":"

assert_perror \u2212 test errnum and abort <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2536],"tags":[2538,3670,3007],"class_list":["post-7356","post","type-post","status-publish","format-standard","hentry","category-3-llamadas-de-bibliotecas","tag-2538","tag-assert_perror","tag-man3"],"gutentor_comment":0,"_links":{"self":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts\/7356","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/comments?post=7356"}],"version-history":[{"count":0,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts\/7356\/revisions"}],"wp:attachment":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/media?parent=7356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/categories?post=7356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/tags?post=7356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}