Hi all, I have a very strange case of a piece of code that crashes when run under valgrind, but doesn’t crash when run normally or under gdb. Obviously something is wrong, but I don’t understand the information valgrind is trying to tell me.
I get an error "Invalid read of size 1”, a stacktrace, a message about overlapping memory then a second stacktrace, and that’s it. Can anyone explain what the relationship is between these two stacktraces, what is this message trying to tell me? ==29256== Invalid read of size 1 ==29256== at 0xA0148F0: pn_selectable_is_terminal (selectable.c:247) ==29256== by 0x997599B: run_messenger_thread (mod_amqp.c:1900) ==29256== by 0x5F21DF4: start_thread (in /usr/lib64/libpthread-2.17.so) ==29256== by 0x64301AC: clone (in /usr/lib64/libc-2.17.so) ==29256== Address 0x698e343 is 99 bytes inside a block of size 104 free'd ==29256== at 0x4C2AD17: free (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==29256== by 0x9FF6BE5: pn_class_decref (object.c:103) ==29256== by 0xA01067B: pn_messenger_free (messenger.c:822) ==29256== by 0x9971583: messenger_cleanup (mod_amqp.c:314) ==29256== by 0x58C3F0D: run_cleanups (apr_pools.c:2352) ==29256== by 0x58C3F0D: apr_pool_destroy (apr_pools.c:814) ==29256== by 0x58C3EE4: apr_pool_destroy (apr_pools.c:811) ==29256== by 0x58C4144: apr_pool_clear (apr_pools.c:769) ==29256== by 0x13E70A: main (in /usr/sbin/httpd) Regards, Graham — ------------------------------------------------------------------------------ _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
