https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122105
--- Comment #4 from Peter Damianov <peter0x44 at disroot dot org> ---
I noticed that we don't support suppressing the warning with & as clang
suggests.
void func();
int main() {
if (func) {}
if (&func) {}
}
with clang:
/tmp/test_addr.cpp:4:7: warning: address of function 'func' will always
evaluate to 'true'
[-Wpointer-bool-conversion]
4 | if (func) {}
| ~~ ^~~~
/tmp/test_explicit_addr.cpp:4:7: note: prefix with the address-of operator to
silence this warning
4 | if (func) {}
| ^
| &
1 warning generated.
no warning on the second if
but with gcc, both instances warn:
/tmp/test_addr.cpp: In function ‘int main()’:
/tmp/test_addr.cpp:4:7: warning: the address of ‘void func()’ will never be
NULL [-Waddress]
4 | if (func) {}
| ^~~~
/tmp/test_addr.cpp:1:6: note: ‘void func()’ declared here
1 | void func();
| ^~~~
/tmp/test_addr.cpp:5:7: warning: the address of ‘void func()’ will never be
NULL [-Waddress]
5 | if (&func) {}
| ^~~~~
/tmp/test_addr.cpp:1:6: note: ‘void func()’ declared here
1 | void func();
| ^~~~
