Just a shot in the dark, but did you build it with the -pthread option (for both compiling and linking)? Thanks, Lyle -----Original Message----- From: gcc-help-owner@xxxxxxxxxxx [mailto:gcc-help-owner@xxxxxxxxxxx] On Behalf Of Nathan Zorn Sent: Monday, May 24, 2004 5:58 PM To: gcc-help@xxxxxxxxxxx Subject: Problem with allocator in a multithreaded application. Maybe this should go to libstdc++, but I will try this list first. I am developing a multithreaded application that uses a lot of the std containers and streams. Since the platform I am developing for is redhat 7.2 , I initially used the compiler that is shipped with that distribution (2.96). This version had its problems, so I decided to start using gcc version 3.3.2 (the latest at the time). I built this version with only the --enable-threads configure switch. I released a stable version of my application with this build. Recently I switched development machines and attempted to rebuild the gcc compiler (again only with --enable-threads configure option). Ever since this rebuild my application has had strange memory leak problems. It will run for awhile then consume all the machines memory resources. This is the same version of my code that ran fine before and the same version of gcc (only rebuilt on the new machine). Since this version of gcc didn't work I also tried gcc 3.4.0 with the same result. I have ran this application through valgrind with no reports of problems except in the std::allocator code. I found this in the FAQ which explains that it isn't a leak but just the behavior of the basic allocator. So, I created a small application [1] that when it is run through valgrind single threaded its fine, but multithreaded it definitely seems to leak memory. Also in order to elliminate that it is my code, I built my application with the Intel compiler and the memory leak didn't occur, even after three days of running. Any suggestions and help is appreciated. I really don't want to start using the intel compiler instead of gcc. Thanks [1] http://bfs.itlab.musc.edu/~nathan/stl_vector.C
