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Does Rule 11.9 allow indirect expansion from NULL?
#2
rgamble Wrote:Does the following example violate Rule 11.9?
Code:
#define FOO NULL
int32_t *p1 = FOO;
There is a note in rule 11.9 that says:
Quote:a null pointer constant of the form (void*)0 is permitted, whether or not it was expanded from NULL
There is also the following sample code:
Code:
#define MY_NULL_2 (void*)0
if (p2 == MY_NULL_2)/*compliant*/
Given the fact that this is identical with your example after preprocessing stage, logic dictates it cannot be a violation.
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