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From: "ted at lyncon dot se" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/105637] New: [11 Regression] Wrong overload selected in
 base class
Date: Tue, 17 May 2022 20:40:54 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105637

            Bug ID: 105637
           Summary: [11 Regression] Wrong overload selected in base class
           Product: gcc
           Version: 11.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ted at lyncon dot se
  Target Milestone: ---

This compiles fine in 11.3 but selects the non-const `BaseClass` overload in
12.1:
```
struct BaseClass {
    // Commenting out this non-const function out will fix the compilation:
    int baseDevice() { return 1; }
    int baseDevice() const { return 2; }
};

template <class ObjectClass>
struct DerivedClass : BaseClass {};

template <class ObjectClass>
struct TopClass : DerivedClass<ObjectClass> {
public:
    virtual int failsToCompile() const {
        // This should choose to call the const function, but it tries to c=
all
        // the non-const version.
        return BaseClass::baseDevice();                   // error!
        //return this->baseDevice();                      // works
        //return DerivedClass<ObjectClass>::baseDevice(); // works
    }
};

int main() {
    TopClass<int> x;=20
}
```=