https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94563
Bug ID: 94563
Summary: Relational operations between pointer and nullptr
accepted
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: daniel.kruegler at googlemail dot com
Target Milestone: ---
The following code is accepted for language versions c++14, c++17, as well as
c++20 using the following additional compiler flags:
-Wall -Wextra -pedantic
bool test(int* p)
{
return p < nullptr;
}
int main()
{
}
It should be noted, that a warning is emitted, satisfying the requirement for a
diagnostic in a strict sense:
>>>>>>>>>>>>>>
prog.cc: In function 'bool test(int*)':
prog.cc:3:12: warning: ordered comparison of pointer with integer zero
[-Wextra]
3 | return p < nullptr;
| ~~^~~~~~~~~
0
>>>>>>>>>>>>>>
This code should be ill-formed since the acceptance of
http://wg21.link/n3624
