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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/43933] Suboptimal error message when supplying a bad
 default value in initialization
Date: Sun, 20 Jun 2021 09:08:30 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D43933

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |8.3.1

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Looks like it has been fixed on the trunk:
t7.cc: In constructor =E2=80=98A::A()=E2=80=99:
t7.cc:13:10: error: call of overloaded =E2=80=98QString(int)=E2=80=99 is am=
biguous
   13 | A::A() : a(0), b(0) { }
      |          ^~~~
t7.cc:4:3: note: candidate: =E2=80=98QString::QString(char)=E2=80=99
    4 |   QString(char);
      |   ^~~~~~~
t7.cc:3:3: note: candidate: =E2=80=98QString::QString(const QString&)=E2=80=
=99
    3 |   QString(const QString&);
      |   ^~~~~~~
t7.cc:2:3: note: candidate: =E2=80=98QString::QString(const char*)=E2=80=99
    2 |   QString(const char*);
      |   ^~~~~~~
t7.cc:13:16: error: call of overloaded =E2=80=98QString(int)=E2=80=99 is am=
biguous
   13 | A::A() : a(0), b(0) { }
      |                ^~~~
t7.cc:4:3: note: candidate: =E2=80=98QString::QString(char)=E2=80=99
    4 |   QString(char);
      |   ^~~~~~~
t7.cc:3:3: note: candidate: =E2=80=98QString::QString(const QString&)=E2=80=
=99
    3 |   QString(const QString&);
      |   ^~~~~~~
t7.cc:2:3: note: candidate: =E2=80=98QString::QString(const char*)=E2=80=99
    2 |   QString(const char*);
      |   ^~~~~~~


It was broken in GCC 8.3 though:
t7.cc: In constructor =E2=80=98A::A()=E2=80=99:
t7.cc:13:19: error: call of overloaded =E2=80=98QString(int)=E2=80=99 is am=
biguous
 A::A() : a(0), b(0) { }
                   ^=