not sure if it will help, but your program and libcurl need to match for some compilation settings.
#1 - you need to use the same CLR (runtime). If you use "multithreaded debug dll" in your program, but libcurl is compiled with "multithreaded debug" for instance, that will cause problems. #2 - make sure that your exceptions and rtti settings in your program match the settings you built libcurl with (although i think this will may cause linker errors if this is wrong) On Mon, Oct 10, 2011 at 5:12 PM, guillaume opalach < [email protected]> wrote: > Hello, > > I have a bug when I try to execute this code : > > ---------------------------------------------------- > #include <stdio.h> > #include <curl/curl.h> > > int main(void) > { > CURL *curl; > CURLcode res; > > curl_global_init(CURL_GLOBAL_ALL); > curl = curl_easy_init(); > if(curl) > { > curl_easy_setopt(curl, CURLOPT_URL, "http://www.google.com/";); > res = curl_easy_perform(curl); // error is here > > /* always cleanup */ > curl_easy_cleanup(curl); > } > return 0; > } > ---------------------------------------------------- > > The error message is the following : > > ---------------------------------------------------- > *Debug Assertion Failed ! > C:\...\testCurl.exe > File: f\dd\vctools\crt_bld\self_x86\crt\dbgheap.c > Line: 1322 > > Expression: _CrtIsValidHeapPointer(pUserData)* > ---------------------------------------------------- > > I'm using Visual C++ 2010 on Windows 7. and I have curl-7.22.0 > I use my "own version" of the curl library, I follow a tutorial found > somewhere on your website (I can't find the url again ><) > I've open vc6curl.dsw and I build the LIB-RELEASE and the DLL-RELEASE. > I copy the libcurl.dll and the libcurl.lib created into my project's > directory. > After that, on Visual I've done the following action (my visual is in > french so I'll try to translate) > 1 -- > - Right click on the project name > - Properties > - Configuration Properties > - C/C++ (General) > - Added the path to an include repertory with the curl header file. > 2 -- > - Right click on the project name > - Properties > - Configuration Properties > - C/C++ > - Preprocessor > - Add the BUILDING_LIBCURL and HTTP_ONLY define > (without this define, I can't make the .exe) > 3 -- > - Right click on the project name > - Properties > - Configuration Properties > - Linker (General) > - In "repertory for additionnal library", I've add a path to the > libcurl.lib > 4 -- > - Right click on the project name > - Properties > - Configuration Properties > - Linker > - Entry (? maybe this traduction is wrong, it's the second menu, just under > General) > - Additionnal dependency -> I add libcurl.lib; ws2_32.lib; wldap32.lib > > That's all. I don't know what to do with the libcurl.dll, I've put it in > the same directory than libcurl.lib. > I can compile the project without any error, but when I run the executable, > an error message (Debug insertion failed) > I tried to compile the project in Release and not Debug, but I get another > error message. > > So, when I execute this code in step by step, the error appear in this line > : > -- res = curl_easy_perform(curl); > I've get in the cURL code to see what where the error happen : > > easy.c - function curl_easy_perform(CURL * curl) - Line 537 - return > Curl_perform(data); > > transfer.c - function Curl_perform(struct SessionHandle *data) - Line 2261 > - return Curl_do_perform(data); > > transfer.c - function Curl_do_perform(struct SessionHandle *data) - Line > 2115 - res = connect_host(data, &conn); > > transfer.c - static function connect_host(struct SessionHandle *data, > struct connectdata **conn) - Line 1982 - res = > Curl_resolver_wait_resolv(*conn, NULL); > > asyn-thread.c - function Curl_resolver_wait_resolv(struct connectdata > *conn, struct Curl_dns_entry **entry) - Line 509 - > destroy_async_data(&conn->async); > > asyn-thread.c - static function destroy_async_data (struct Curl_async > *async) - Line 327 - free(async->hostname); > > I don't get deeper, because it's the function free, it's a system function > and not a curl function. > I really don't know why my code is not working but I think that, if the > problem don't came from my code, there's only 3 option: > - A problem with the libcurl.lib (wrong compilation?) > - A problem with my Visual configuration (maybe I forget something?) > - A bug in the curl code o_O ? > > I hope that someone can help me to solve this problem because I've really > tried everything that I can. > > Best regard, > -- > Guillaume > > > > > > > > > > > > > ------------------------------------------------------------------- > List admin: http://cool.haxx.se/list/listinfo/curl-library > Etiquette: http://curl.haxx.se/mail/etiquette.html >
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