Does valgrind just not work with -static? It does. The problem is not in Valgrind, it’s in glibc, which is not Valgrind clean. The glibc developers refused to fix these problems (because the problems are of a “don’t care” nature, and fixing them costs (a few) cycles). When you link dynamically, these errors come from … Read more
If the programme you are running through Valgrind is exactly the one you posted in your question, it clearly doesn’t have any memory leaks. In fact, you don’t even use malloc/free yourself! It looks to me like these are spurious errors / false positives that Valgrind detects on OS X (only!), similar to what happened … Read more
Even for basic OpenGL “hello world” program without the full SDL, Valgrind gives me similar warnings deep inside the OpenGL libraries. It’s peculiar, but I’ve assumed The library implementors know what they’re doing (probably preallocating some small static buffers they never bother to free), Even if they don’t, it’s a one-time leak that’ll be reclaimed … Read more
A thread’s resources are not immediately released at termination, unless the thread was created with the detach state attribute set to PTHREAD_CREATE_DETACHED, or if pthread_detach is called for its pthread_t. An undetached thread will remain terminated state until its identifier is passed to pthread_join or pthread_detach. To sum it up, you have three options: create … Read more
Yes, you can use valgrind with Python. You just need to use the valgrind suppression file provided by the Python developers, so you don’t get a bunch of false positives due to Python’s custom memory allocation/reallocation functions. The valgrind suppression file can be found here: http://svn.python.org/projects/python/trunk/Misc/valgrind-python.supp IMPORTANT: You need to uncomment the lines for PyObject_Free … Read more
Assuming you are running the memcheck tool and you want to ignore Leak errors in libcrypto only, you could put a suppression like: { ignore_libcrypto_conditional_jump_errors Memcheck:Leak … obj:*/libcrypto.so.* } … into a file and pass it to valgrind with –suppressions=*FILENAME*. To ignore Leak errors in all shared libraries under any lib directory (/lib, /lib64, /usr/lib, … Read more
It looks like you are entering The Lost World here. I don’t think the problem is with c-bindings in racc either. Ruby memory management is both elegant and cumbersome. It stores objects (named RVALUEs) in so-called heaps of size of approx 16KB. On a low level, RVALUE is a c-struct, containing a union of different … Read more
As jakobengblom2 pointed out, valgrind has a suit of tools. Depending which one you are talking about there are different windows counter parts. I will only mention OSS or free tools here. 1. MemCheck: Dr. Memory. It is a relatively new tool, works very well on Windows 7. My favorite feature is that it groups … Read more
Use massif, which is part of the Valgrind tools. massif-visualizer can help you graph the data or you can just use the ms_print command.
You can also use gdb instead of addr2line to examine memory address. Load executable file in gdb and print the name of a symbol which is stored at the address. 16 Examining the Symbol Table. (gdb) info symbol 0x4005BDC