Hi
I think the problem origins from the fact that getID() is a constexpr function. If I replace "A::getID()" in the template argument of B with the
corresponding part of its return statement "static_cast<uint16_t>(TEST_ID)" the problem vanishes. Therefore, it would be related to this bug:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=332829
I'm not sure whether your case should already be working or not.
Regards
Thomas
From: cdt-dev-bounces@xxxxxxxxxxx [mailto:cdt-dev-bounces@xxxxxxxxxxx]
On Behalf Of scalpel4k
Sent: Freitag, 5. Juli 2013 12:00
To: CDT General developers list.
Subject: [cdt-dev] resolution error
Hi guys,
I am facing a little problem using templates. The following code example produces a symbol resolution error message
while the compiler itself does not choke at all.
I tend to say that I don't need the explicit static_cast in class C, so is this a bug which I should report?
#include <stdint.h>
#define TEST_ID 0
struct A {
static constexpr uint16_t getID() {
return static_cast<uint16_t>(TEST_ID);
}
};
template<uint16_t ID>
struct B {
static constexpr uint16_t getID() {
return ID;
}
};
struct C {
static uint16_t getID_0 () {
return B<static_cast<uint16_t>(A::getID())>::getID(); // why do I
}
static uint16_t getID_1 () {
return B<A::getID()>::getID(); // resolution error
}
};