{"id":4036,"date":"2014-03-30T07:19:57","date_gmt":"2014-03-30T07:19:57","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2014\/03\/30\/problem-about-unresolved-collection-of-common-programming-errors\/"},"modified":"2014-03-30T07:19:57","modified_gmt":"2014-03-30T07:19:57","slug":"problem-about-unresolved-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2014\/03\/30\/problem-about-unresolved-collection-of-common-programming-errors\/","title":{"rendered":"problem about unresolved-Collection of common programming errors"},"content":{"rendered":"<ul>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/3ca7f4c9a648019f6801b15d598de732?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nuser1243488<br \/>\nwindows linker unresolved dbghelp<br \/>\nFor background, I have come across this porting a medium-sized linux codebase (compiling into a giant .so) to x64 windows (compiling into a .dll). I have had linker trouble.As a minimal testcase, if I create a Visual Studio project from just the following file:#include &lt;Windows.h&gt; #include &lt;Dbghelp.h&gt;void do_stuff(char const * s) {char buffer[4096];long int len = UnDecorateSymbolName(s,buffer,sizeof(buffer),UNDNAME_COMPLETE); }And I set the project type to DLL and build it, I get an<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/cda3587687ad3bc0bc0ceff0bd9ba3fb?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nMichael Hogenson<br \/>\njava compiler-errors runtimeexception unresolved<br \/>\nI&#8217;m currently a Teacher&#8217;s Assistant for a class that uses Java. I&#8217;m trying to write a snippet of code that will test to make sure that student&#8217;s methods are correct, but often times the student won&#8217;t even implement the method, or they&#8217;ll call it something incorrect, which obviously will cause a Unresolved Compilation problem when my test code is run. Is there a way to catch this error during runtime, so that my test code can execute without having to play around with the code submitted by the<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/a62753a5c461bde80c6848122287c6fc?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nSynxis<br \/>\nc++ main unresolved<br \/>\nPossible Duplicate:What is an undefined reference\/unresolved external symbol error and how do I fix it? I&#8217;m learning C++ and I have a compiling problem in my project. I have read tons of post with this error on the title but I cant find where the problem is.I have a method call in my Main funtion that is responsible for the error. Whenever I comment the line the project compiles perfect.The code is the following:Main.cpp#pragma once #include &#8220;stdafx.h&#8221; #include &lt;iostream&gt; #include &lt;ss<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/0621d4dd5dba7f4c80b9ac65e278db8d?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nTheSentry<br \/>\nc++ constructor linker unresolved externals<br \/>\nPossible Duplicate:What is an undefined reference\/unresolved external symbol error and how do I fix it? I have a problem with the Linker which I just can&#8217;t solve.. Already tried anything I could think of I have a Baseclass (Person) and a Derived Class (Dealer) and I just want to call the Constructor from the CardStack Class which is a member in the Dealer class.Here is my code:Person.h#ifndef PERSON_H #define PERSON_H #include &#8220;Card.h&#8221; #include &#8220;Hand.h&#8221;class Person { public:Person(void);virtual<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/83f4600314472e7fdfc988bf106f4acd?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nTee-Man<br \/>\nvisual-c++ external symbol unresolved lnk2001<br \/>\nI am new to C++ and I have been practicing by translating my old Java code into c++. I have come across so many errors that I almost gave up hope. I&#8217;m also trying to fix an error in the main file, I&#8217;m trying to call a function in the main file, but I&#8217;m get syntax errors like crazy and I dont know whats wrong. I&#8217;ve tried googling and searching for weeks on how to fix these errors in main.cpp. I appreciated the help if you can.\/\/ NamedStorm.cpp \/\/ CPP=&gt; Function definition #include &lt;iostrea<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/e3091b8c3df09c7e0162a24efc90556c?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\n341008<br \/>\niphone linker reference main unresolved<br \/>\nI am trying to create an executable using the following linker command:\/path\/to\/ld64\/i686-apple-darwin9-ld64 -ObjC -dead_strip -L\/ -o ..\/someoutput -exported_symbol _main -Z -F\/full\/path\/to\/frameworks -lgcc -lgcc_s.1 -arch arm -lstdc++.6 -lcrt1.o -lSystem.B -lz -lobjc -framework CoreFoundation -framework UIKit -framework MobileCoreServices -framework CoreGraphics -framework Foundation -framework SystemConfiguration -framework AudioToolbox -framework CFNetwork -framework QuartzCore -framework Ope<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/81b32b06714cc83c779fc34dc2e652c1?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nuser519569<br \/>\nlinux dlopen unresolved<br \/>\nI&#8217;m trying to report all unresolved symbols from a failed call to dlopen() on a shared library. I&#8217;ve tried both RTLD_LAZY and RTLD_NOW as flags to the dlopen call. I know the shared library has 10 missing symbols (i.e. if you performed a static link g++ blah blah : the link would fail with 10 missing symbols). I want to get dlerror() to tell me about all of the 10 missing symbols during the failed load.Does anyone know how to coax this into happening? I see from the man pages that dlerror() retu<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/graph.facebook.com\/591679256\/picture?type=large\" \/><br \/>\nDavid Claridge<br \/>\nc++ linker shared-libraries ld unresolved<br \/>\nI am writing a fairly large C++ shared-object library, and have run into a small issue that makes debugging a pain:If I define a function\/method in a header file, and forget to create a stub for it (during development), since I am building as a shared object library rather than an executable, no errors appear at compile-time telling me I have forgotten to implement that function. The only way I find out something is wrong is at runtime, when eventually an application linking against this library<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/Nsmxr.jpg?s=32&amp;g=1\" \/><br \/>\nJames McLaughlin<br \/>\nc++ recursion sum unresolved<br \/>\nI have to make a recursive function that will compute the sum of the first n integer in an array of at least n integers. I believe I have the function complete the cout statement however is causing an error. Any help would be appreciated.#include &lt;iostream&gt; using namespace std;int n = 0; int array[];int sum(int array[], int n);int main() {cout &lt;&lt; sum(array, 4)&lt;&lt; endl;return 0; }\/\/end mainint sum(int array[], int n) {if(n &lt;= 0) {return 0;}else{return array[0] + sum(array + 1,<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/6bd50c6e3a3772e1162a06e99abfac9d?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nSimon<br \/>\nc++ linker symbols unresolved<br \/>\nUnder Solaris 10, I&#8217;m creating a library A.so that calls a function f() which is defined in library B.so. To compile the library A.so, I declare in my code f() as extern.Unfortunately, I &#8220;forgot&#8221; to declare in A&#8217;s makefile that it has to link with B. However, &#8220;make A&#8221; causes no warning, no error, and the library A.so is created.Of course, when executing A&#8217;s code, the call of f() crashes because it is undefined.Is there a way (linker option, code trick&#8230;) to make the compilation of library A fai<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/099e5c6d3d5dfb615735cd2cfa61828e?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nJohn Wang<br \/>\nclojure lazy-evaluation unresolved<br \/>\nI&#8217;m twisting my old java\/python head the clojure way. Please help me to understand the lazy feature of clojure.=&gt; (def myvar (lazy-seq [1 2 (prn &#8220;abc&#8221;)])) #&#8217;user\/myvarThe above is easy to understand. Since it&#8217;s a lazy sequence, the (prn &#8220;abc&#8221;) will not be evaluated, hence nothing printed.=&gt; (def myvar (lazy-seq [1 2 (prn undefined-var)])) CompilerException java.lang.RuntimeException: Unable to resolve symbol: undefined-var in this context, compiling:(NO_SOURCE_PATH:1) The above will raise<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/039d0df2ad0bdee4c506943c79bf70c3?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nMichael<br \/>\nc++ reference undefined symbol unresolved<br \/>\nI&#8217;m having several &#8220;undefined reference&#8221; (during linkage) and &#8220;unresolved symbol&#8221; (during runtime after dlopen) issues where I work. It is quite a large makefile system.Are there general rules and guidelines for linking libraries and using compiler flags\/options to evade these types of errors?<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/03ff7e24e3a98d1ca68475c808325a66?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nuser26534<br \/>\ninclude cocos2d-x unresolved inclusion<br \/>\nI am trying to create a new cocos2dx project in windows 7 64 bitcocos2dx version : cocos2d-2.1rc0-x-2.1.3ADT Bundle : adt-bundle-windows-x86_64-20130514NDK : android-ndk-r8e-windows-x86_64Path variables:NDK_ROOT=c:\\android\\NDK;Path: &#8230;..other windows stuffs;c:\\..java&#8221;;c:\\cygwin\\bin;When i execute create-android-project.bat, no error is shown. the project is created fine.But when i import it to eclipse it shows error in AppDelegate.h file.i have include the following entries in properties-&gt;paths<\/li>\n<\/ul>\n<p>Web site is in building<\/p>\n","protected":false},"excerpt":{"rendered":"<p>user1243488 windows linker unresolved dbghelp For background, I have come across this porting a medium-sized linux codebase (compiling into a giant .so) to x64 windows (compiling into a .dll). I have had linker trouble.As a minimal testcase, if I create a Visual Studio project from just the following file:#include &lt;Windows.h&gt; #include &lt;Dbghelp.h&gt;void do_stuff(char const * [&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-4036","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/4036","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=4036"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/4036\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=4036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=4036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=4036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}