id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc	lang	patch	platform
18	Jit code buffers need to be allocated via mmap()	Infinoid	Infinoid	"Currently on linux x86, jit code buffers are allocated from the heap.  On certain platforms and under certain conditions, the heap is not executable.  This results in a segfault immediately upon attempting to execute some JIT code.  We are currently able to reproduce this on feather3, when executing tene's build from within a screen session (don't ask).

Parrot does call mprotect() in an attempt to set the right permissions on the buffer.  However, the mprotect manpage on my linux box says that POSIX mprotect behavior is undefined when called on a non-mmaped buffer.  So, it looks like we need to switch mem_alloc_executable()/mem_free_executable()/mem_realloc_executable() over to using mmap.
"	patch	closed	normal		none		none	fixed	JIT patch			applied