if<\/code> statement.\n<\/p>\n\nThe customer was naturally embarrassed, but was gracious enough to\nadmit that, yup, removing the semicolon fixed the problem.\n<\/p>\n
\nThis reminds me of an incident many years ago.\nI was having a horrible time debugging a simple loop.\nIt looked like the compiler was on drugs and was simply\nignoring my loop conditions and always dropping out of the loop.\nAt wit’s end, I asked a colleague to come to my office and\nserve as a second set of eyes.\nI talked him through the code as I single-stepped:\n<\/p>\n
\n“Okay, so we set up the loop here…”\n<\/p>\n
\nNODE pn = GetActiveNode();\n<\/pre>\n\n“And we enter the loop, continuing while the node still needs processing.”\n<\/p>\n
\nif (pn->NeedsProcessing())\n{\n<\/pre>\n\n“Okay, we entered the loop.\nNow we realign the skew rods on the node.”\n<\/p>\n
\n pn->RealignSkewRods();\n<\/pre>\n\n“If the treadle is splayed, we need to calibrate the node against it.”\n<\/p>\n
\n if (IsSplayed()) pn->Recalibrate(this);\n<\/pre>\n\n“And then we loop back to see if there is more work to be done\non this node.”\n<\/p>\n
\n}\n<\/pre>\n\n“But look, even though the node needs processing\n«view node members», we don’t loop back.\nWe just drop out of the loop.\nWhat’s going on?”\n<\/p>\n
\n— Um, that’s an if<\/code> statement up there,\nnot a while<\/code> statement.<\/i><\/p>\n\nA moment of silence while I process this piece of information.\n<\/p>\n
\n“All right then, sorry to bother you, hey,\nhow about that sporting event last night, huh?”<\/p>\n","protected":false},"excerpt":{"rendered":"
A customer reported that they had a problem with a particular function added in Windows 7. The tricky bit was that the function was used only on very high-end hardware, not the sort of thing your average developer has lying around. GROUP_AFFINITY GroupAffinity; … code that initializes the GroupAffinity structure … if (!SetThreadGroupAffinity(hThread, &GrouAffinity, NULL)); { […]<\/p>\n","protected":false},"author":1069,"featured_media":111744,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[25],"class_list":["post-9203","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-oldnewthing","tag-code"],"acf":[],"blog_post_summary":"
A customer reported that they had a problem with a particular function added in Windows 7. The tricky bit was that the function was used only on very high-end hardware, not the sort of thing your average developer has lying around. GROUP_AFFINITY GroupAffinity; … code that initializes the GroupAffinity structure … if (!SetThreadGroupAffinity(hThread, &GrouAffinity, NULL)); { […]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/posts\/9203","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/users\/1069"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/comments?post=9203"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/posts\/9203\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/media\/111744"}],"wp:attachment":[{"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/media?parent=9203"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/categories?post=9203"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/tags?post=9203"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}