https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114571
Bug ID: 114571
Summary: -Wzero-as-null-pointer-constant does not complain
about NULL
Product: gcc
Version: 13.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ossman at cendio dot se
Target Milestone: ---
Created attachment 57857
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57857&action=edit
Test case
We are looking at bringing up the TigerVNC project to a more modern C++ style,
and one thing was using nullptr instead of NULL. We were very glad when we
found -Wzero-as-null-pointer-constant to help out with this.
Unfortunately, it doesn't seem to do much for NULL in modern¹ gcc. It spots
usage of "0", but not any "NULL". clang has no trouble finding both.
I've attached a test case with some comments on the cases we've seen.
¹ gcc 5 spots some, but not all NULL
