[Bug c++/96745] New: [concepts] internal compiler error: in type_memfn_rqual, at cp/typeck.c:10389

["src at andyf dot de" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96745

            Bug ID: 96745
           Summary: [concepts] internal compiler error: in
                    type_memfn_rqual, at cp/typeck.c:10389
           Product: gcc
           Version: 10.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: src at andyf dot de
  Target Milestone: ---

Hello,

the following code gives an internal compiler error.

template<typename T>
struct Test {
    ~Test() requires true {}
    ~Test() requires true && true {}
};

Test<int> t;


Error:
<source>: In instantiation of 'struct Test<int>':
<source>:7:11:   required from here
<source>:2:8: internal compiler error: in type_memfn_rqual, at
cp/typeck.c:10389
    2 | struct Test {
      |        ^~~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 1



The code is ill-formed, the compiler cannot identify which of the two
destructors is the most constrained. However, I think a more helpful error
message would assist me in a large code-base much more.

Live: https://godbolt.org/z/6dP8PG



Andreas