{"id":914,"date":"2022-08-30T15:09:17","date_gmt":"2022-08-30T15:09:17","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2013\/11\/09\/compiler-is-able-to-find-function-without-matching-h-file-is-updated-collection-of-common-programming-errors\/"},"modified":"2022-08-30T15:09:17","modified_gmt":"2022-08-30T15:09:17","slug":"compiler-is-able-to-find-function-without-matching-h-file-is-updated-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2022\/08\/30\/compiler-is-able-to-find-function-without-matching-h-file-is-updated-collection-of-common-programming-errors\/","title":{"rendered":"Compiler is able to find function without matching .h file is updated?-Collection of common programming errors"},"content":{"rendered":"<p>Undefined functions are not automatically an error; the compiler takes them to have a default prototype, then when your code is finally linked if there is something there of the right name it will be used. However, if the default prototype isn&#8217;t what your function actually has, its arguments will be set up wrongly (think hammering a square peg into a round hole); the consequences will be unpredictable.<\/p>\n<p>In most cases you should be telling the compiler to treat such cases as an error. For example, on gcc, add <code>-Wall -Werror<\/code> to every compile line, or add them to the CFLAGS in a typical Makefile.<\/p>\n<p id=\"rop\"><small>Originally posted 2013-11-09 22:57:37. <\/small><\/p>","protected":false},"excerpt":{"rendered":"<p>Undefined functions are not automatically an error; the compiler takes them to have a default prototype, then when your code is finally linked if there is something there of the right name it will be used. However, if the default prototype isn&#8217;t what your function actually has, its arguments will be set up wrongly (think [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-914","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/914","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=914"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/914\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=914"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=914"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}