https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99404
Bug ID: 99404
Summary: Diagnostics for undeclared members of a namespace
don't say "namespace"
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: enhancement
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
Target Milestone: ---
#include <chrono>
#include <future>
int main()
{
std::this_thread::sleep_until(std::chrono::system_clock::now());
}
This invalid program gives:
ns.C: In function 'int main()':
ns.C:5:21: error: 'sleep_until' is not a member of 'std::this_thread'
5 | std::this_thread::sleep_until(std::chrono::system_clock::now());
| ^~~~~~~~~~~
It might be helpful to casual C++ programmers if it was clear that
'std::this_thread' is a namespace, and not a class type or global variable e.g.
ns.C:5:21: error: 'sleep_until' is not a member of namespace 'std::this_thread'
Minimal example:
namespace N { }
void f() {
using N::a;
N::b();
}
ns2.C: In function ‘void f()’:
ns2.C:3:12: error: ‘a’ has not been declared in ‘N’
3 | using N::a;
| ^
ns2.C:4:6: error: ‘b’ is not a member of ‘N’
4 | N::b();
| ^
Also, is there a reason these two diagnostics are worded differently?
Clang says:
ns2.C:3:12: error: no member named 'a' in namespace 'N'
using N::a;
~~~^
ns2.C:4:6: error: no member named 'b' in namespace 'N'
N::b();
~~~^
2 errors generated.
And EDG says:
"ns2.C", line 3: error: namespace "N" has no member "a"
using N::a;
^
"ns2.C", line 4: error: namespace "N" has no member "b"
N::b();
^
2 errors detected in the compilation of "ns2.C".
