lab4
Update src/CMakeLists.txt, src/mem.c, src/mem.h, src/mem_debug.c, src/mem_internals.h, src/util.h, src/main.c, src/tests.c, src/tests.h files
Update src/CMakeLists.txt, src/mem.c, src/mem.h, src/mem_debug.c, src/mem_internals.h, src/util.h, src/main.c, src/tests.c, src/tests.h files