https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94124
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
commit e11d05c1ed26257493130762a8ae240f1bc06e87
Author: Marek Polacek <pola...@redhat.com>
Date: Tue Mar 10 18:55:42 2020 -0400
c++: Fix wrong conversion error with non-viable overload [PR94124]
This is a bad interaction between sharing a constructor for an array
and stripping its trailing zero-initializers. Here we reuse a ctor
and then strip its 0s. This breaks overload resolution in this test:
D can be initialized from {} but not from {0}, so if we truncate the
constructor not to include the zero, the F(D) overload becomes valid
and then we get the ambiguous conversion error.
PR c++/94124 - wrong conversion error with non-viable overload.
* decl.c (reshape_init_array_1): Unshare a constructor if we
stripped trailing zero-initializers.
* g++.dg/cpp0x/initlist-overload1.C: New test.
