https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105752
Bug ID: 105752
Summary: Template function can access private member
Product: gcc
Version: 12.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: csaba_22 at yahoo dot co.uk
Target Milestone: ---
The following code
class Outer
{
private: // !!!!!
struct Inner
{};
};
template<typename T>
struct Meow
{
void purr() {
Outer::Inner oi;
}
};
int main()
{
Meow<double> kitty;
//kitty.purr();
}
is compiled by GCC from 4.1.2 to 12.1.0, but is rejected by all clang releases
available on godbolt.
https://godbolt.org/z/58Yca6dah
Also mentioned here:
https://stackoverflow.com/questions/28596242/accessing-private-inner-class-type-from-non-member-template-function
If the call to the function is uncommented, then GCC also emits an error.
Visual Studio 2013 update 4 also emits an error (allegedly), so this sounds
like a bug.
