OpenBSD's malloc implementation does: "On a call to free, memory is released and unmapped from the process address space using munmap." http://en.wikipedia.org

OpenBSD's malloc implementation does: "On a call to free, memory is released and unmapped from the process address space using munmap." http://en.wikipedia.org/wiki/C_dynamic_memory_allocation#OpenBSD.27s_malloc http://en.wikipedia.org/wiki/C_dynamic_memory_allocation#Ope...