merchandise open source free software foss screen-printing t-shirt hoodie pillow sticker mug linux tux debian kde gnome archlinux gnu firefox python go golang mysql wine netbsd vim emacs django valgrind bash libreoffice batman haiku

Valgrind Memcheck Cachegrind Callgrind Massif Helgrind memory-management uninitialised memory memory leaks passing uninitialised memory overlapping pointers misuses of the POSIX pthreads