On Tue, Aug 26, 2014 at 10:52 PM, Uros Bizjak wrote: > Hello! > >> I noticed most of the cgraph and IPA files use xstrdup for cgraph node >> names when printing to dump_file. Very leaky... >> >> What is the reason for all those xstrdups? I couldn't think of any. > > Please see [1] and [2]. > > [1] https://gcc.gnu.org/ml/gcc-patches/2012-04/msg01904.html > [2] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53136
Thanks. Well, that is surprising. The cxx_printable_name_internal uses a ring buffer for caching the names. Apparently that didn't work in your PR. The leaks get quite large over time, especially with a large code base and many small functions. I noticed this when compiling a large code base with dumping enabled and ran out of memory. I assume you also tried increasing the ring buffer size? Oh well, probably not very robust, and we do seem to leak a lot of strings in general... Ciao! Steven
