id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc	lang	patch	platform
1731	Assumption made about buffer header alignment	Paul C. Anagnostopoulos	Paul C. Anagnostopoulos	"Various memory management routines (e.g., `gc_ms_allocate_buffer_storage`) assume that the size of a buffer header is equal to the size of a pointer. This is probably true throughout the system as it stands, but those same routines take pains not to make that assumption in other places.

Here is a line from the above routine:
{{{
    Buffer_buflen(buffer)   = new_size - sizeof (void *);
}}}
If the size of a pointer is less than the buffer header size, the value stored in `buflen` will be too big. `new_size` includes the entire size of the buffer header, which may include alignment padding in addition to the pointer.
"	bug	assigned	normal		core	2.6.0	low