On Wed, Mar 09, 2016 at 09:34:50AM +0100, Markus Armbruster wrote: > Peter Xu <pet...@redhat.com> writes: > > It's dynamically allocated in stack, can we still use ARRAY_SIZE in > > this case? > > ARRAY_SIZE(x) is defined as (sizeof(x) / sizeof((x)[0])). Works when x > is of array type (variable length array is fine). Screws up when x is > of *pointer* type. > > C99 6.5.3.4: > > The sizeof operator yields the size (in bytes) of its operand, which > may be an expression or the parenthesized name of a type. The size > is determined from the type of the operand. The result is an > integer. If the type of the operand is a variable length array > type, the operand is evaluated; otherwise, the operand is not > evaluated and the result is an integer constant.
Good to know it. Thanks! :) However, ARRAY_SIZE() still cannot help solving the unbounded stack issue, right? Peter