"Carlos Martinez" <[EMAIL PROTECTED]> writes: > On 15 feb, 12:52, "Carlos Martinez" <[EMAIL PROTECTED]> wrote: >> >> I have a possible memory leak. >> I use rational's purify to detect memory leaks, and it indicates a >> memory leak in a temporary of std::string.
Unfortunately your post lacks all the relevant details which may have helped answering your question: what OS, what version of gcc, what is the actual Purify report? >> I have read somewhere that some memory leaks aren't memory leaks at >> all. It seams it could be the memory pool used by the stl. >> I have test with and without GLIBCPP_FORCE_NEW environment variable >> enabled, and in both cases there is the memory leak. Which environment variable you must use depends on version of gcc: For 2.9x, recompile code with -D__USE_MALLOC. For gcc versions between 3.0 and 3.3.1 there is no variable you can set (AFAICT). For gcc 3.3.2 the variable is GLIBCPP_FORCE_NEW For gcc 3.4.0 and above it is GLIBCXX_FORCE_NEW [What a mess!] >> I assume it's a memory leak, because without purify, processes grows >> up in memory usage indefinitely and because if I change std::string >> for my own very, very basic implementation of string, it disappears >> (no memory growth nor memory leak indication by purify) One of the reasons std::string may leak is if multi-threaded code is compiled incorrectly. Is your code mutithreaded, and what is the compilation command line? > The process, processes operations, and even all operations are the > same, not always appears memory leak. This suggest, there isn't a > memory leak and enforce the theroy of a memory pool consecuence, but i > don't understand it because process in memory grows indefinitely if i > use std::string If the code is multi-threaded, then "irreproducible results" fit the "incorrect compilation theory". Cheers, -- In order to understand recursion you must first understand recursion. Remove /-nsp/ for email. _______________________________________________ help-gplusplus mailing list help-gplusplus@gnu.org http://lists.gnu.org/mailman/listinfo/help-gplusplus
