[Bug c++/52718] -Wzero-as-null-pointer-constant: misleading location for 0 as default argument

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52718

--- Comment #11 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-11-01 01:28:26 UTC ---
I can't reproduce in mainline and 4_7-branch. This is what I tried:

a.h:
#pragma GCC system_header

void* fun(void* a = 0);

a.C:
#include "a.h"

int main()
{
  fun();
}

if I compile a.C I get no warnings at all (I get warnings with the pragma
commented out, as expected, and in the right place, line #3 of a.h). Likewise,
everything is fine if inside a.h, a boo calls fun(). Do you have a better
testcase?