The following issue has been SUBMITTED. ====================================================================== http://public.kitware.com/Bug/view.php?id=13114 ====================================================================== Reported By: Cesar Assigned To: ====================================================================== Project: CMake Issue ID: 13114 Category: CPack Reproducibility: always Severity: block Priority: urgent Status: new ====================================================================== Date Submitted: 2012-04-09 13:23 EDT Last Modified: 2012-04-09 13:23 EDT ====================================================================== Summary: CPack segfaults if too many people belong to a certain group Description: CPack, when trying to generate a TGZ package, segfaults in lookup_gname_helper when there are too many people in the GID it is trying to identify. My builds started failing immediately after that number was reached when IT added a new member to the staff group. The realloc in case of ERANGE segfaults. If I increase the buffer size to something larger by hand and recompile it works.
CPack is not the first to run into this issue: https://issues.apache.org/bugzilla/show_bug.cgi?id=41105 Steps to Reproduce: Run CPack to generate TGZs as a user belonging to a group containing "too many people". Also, the file in "addidional information" reproduces the problem every time for our 5000 gid. If I increase the initial bufsize to 1024 it works. It is a Solaris only problem, as our other platforms (Linux, Windows, Mac) work fine. Additional Information: #define _POSIX_PTHREAD_SEMANTICS #include <grp.h> #include <iostream> int main(void) { struct group grent, *result; result = &grent; int bufsize=512; char* buffer=(char*)malloc(bufsize); for(;;) { int status = getgrgid_r(5000, &grent,buffer,bufsize,&result); if(!status) { std::cerr << "Buffer: " << buffer << std::endl; break; } else if(status==34) { std::cerr << "Small buffer\n"; bufsize*=2; buffer=(char*)realloc(buffer,bufsize); } } return 0; } ====================================================================== Issue History Date Modified Username Field Change ====================================================================== 2012-04-09 13:23 Cesar New Issue ====================================================================== -- Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://public.kitware.com/cgi-bin/mailman/listinfo/cmake-developers
