nasm_assert_pointer() would fail with newer gcc when passed a void *,
because the construct sizeof(*(p)) is invalid for void pointers, as is
sizeof(&*(p)).
Instead, make use of the fact that the ternary operator ? : requires
type compatibility between the two sides, and const volatile void * is
type-compatible with any pointer.
Since some compilers are known to elide this check when one side is
NULL, make it a explicit pointer to an arbitrary
object cast to (const volatile void *). zero_buffer[] seems a logical
choice.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
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