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<!DOCTYPE HTML PUBLIC "-//W3O//DTD W3 HTML 2.0//EN"><!-- This collection of hypertext pages is Copyright 1995-2005 by Steve Summit. --><!-- Content from the book "C Programming FAQs: Frequently Asked Questions" --><!-- (Addison-Wesley, 1995, ISBN 0-201-84519-9) is made available here by --><!-- permission of the author and the publisher as a service to the community. --><!-- It is intended to complement the use of the published text --><!-- and is protected by international copyright laws. --><!-- The on-line content may be accessed freely for personal use --><!-- but may not be published or retransmitted without explicit permission. --><!-- --><!-- this page built Sat Dec 24 21:47:46 2005 by faqproc version 2.7 --><!-- from source file strangeprob.sgml dated Tue Jun 29 21:44:40 2004 --><!-- corresponding to FAQ list version 4.0 --><html><!-- Mirrored from c-faq.com/strangeprob/crashatexit.html by HTTrack Website Copier/3.x [XR&CO'2008], Sat, 14 Mar 2009 07:59:01 GMT --><head><meta name=GENERATOR content="faqproc"><title>Question 16.4</title><link href="biglocal.html" rev=precedes><link href="funnybugs.html" rel=precedes><link href="index.html" rev=subdocument></head><body bgcolor="#ffffff"><a href="biglocal.html" rev=precedes><img src="../images/buttonleft.gif" alt="prev"></a><a href="index.html" rev=subdocument><img src="../images/buttonup.gif" alt="up"></a><a href="funnybugs.html" rel=precedes><img src="../images/buttonright.gif" alt="next"></a> <a href="../index-2.html"><img src="../images/buttontop.gif" alt="top/contents"></a><a href="../search.html"><img src="../images/buttonsrch.gif" alt="search"></a><hr><p><!-- qbegin --><h1>comp.lang.c FAQ list<font color=blue>·</font><!-- qtag -->Question 16.4</h1><p><font face=Helvetica size=8 color=blue><b>Q:</b></font>I have a program that seems to run correctly,butitcrashes as it's exiting,<em>after</em>the last statement in <TT>main()</TT>.What could be causing this?</p><p><hr><p><font face=Helvetica size=8 color=blue><b>A:</b></font>There are at least three things to look for:<OL><li>If a semicolon in a previous declaration is missing,<TT>main</TT>might be inadvertently declared as returning a structure,conflicting with the run-time startup code'sexpectations.Seequestions <a href="../struct/retcrash.html">2.18</a>,<a href="../cpp/headerglom.html">10.9</a>,<a href="../ansi/voidmain.html">11.12b</a>,and <a href="../ansi/voidmain3.html">11.14a</a>.<li>If<TT>setbuf</TT> or <TT>setvbuf</TT>is called,and if the supplied bufferis an automatic, local variable of <TT>main</TT>(or any function),the buffer may not exist any moreby the time the stdiolibrary tries to performits finalcleanup.<li>Acleanup functionregistered by <TT>atexit</TT>may have an error.Perhaps <em>it</em> istrying to reference datalocal to <TT>main</TT>or to some other functionwhich no longer exists.</OL>(The second and third problemsare actually closely related to question <a href="../malloc/retaggr.html">7.5a</a>;seealso question<a href="../ansi/exitvsreturn.html">11.16</a>.)</p><p>References:CT&P Sec. 5.3 pp. 72-3<br></p><!-- aend --><p><hr><a href="biglocal.html" rev=precedes><img src="../images/buttonleft.gif" alt="prev"></a><a href="index.html" rev=subdocument><img src="../images/buttonup.gif" alt="up"></a><a href="funnybugs.html" rel=precedes><img src="../images/buttonright.gif" alt="next"></a> <a href="../questions.html"><img src="../images/buttontop.gif" alt="contents"></a><a href="../search.html"><img src="../images/buttonsrch.gif" alt="search"></a><br><!-- lastfooter --><a href="../about.html">about this FAQ list</a> <a href="../eskimo.html">about eskimo</a> <a href="../search.html">search</a> <a href="../feedback.html">feedback</a> <a href="copyright.html">copyright</a><p>Hosted by<a href="http://www.eskimo.com/"><img src="../../www.eskimo.com/img/link/eskitiny.gif" alt="Eskimo North"></a></body><!-- Mirrored from c-faq.com/strangeprob/crashatexit.html by HTTrack Website Copier/3.x [XR&CO'2008], Sat, 14 Mar 2009 07:59:01 GMT --></html>⌨️ 快捷键说明
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