- memory allocator
Standard C Library (libc, -lc)
bytes of space in the stack frame of the caller.
This temporary space is automatically freed on
function returns a pointer to the beginning of the allocated space.
If the allocation failed, a
pointer is returned.
Few limitations can be mentioned:
is machine dependent; its use is discouraged.
function is slightly unsafe because it cannot ensure that the pointer
returned points to a valid and usable block of memory.
The allocation made may exceed the bounds of the stack, or even go
further into other objects in memory, and
cannot determine such an error.
with large unbounded allocations.
modifies the stack at runtime,
it causes problems to certain security features.
for a discussion.