[Bug c++/94808] [ICE] [Regression] Segfault during diagnostics from concept check failure

[ppalka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94808

Patrick Palka <ppalka at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2020-04-28
             Status|UNCONFIRMED                 |ASSIGNED
     Ever confirmed|0                           |1
           Assignee|unassigned at gcc dot gnu.org      |ppalka at gcc dot gnu.org
                 CC|                            |ppalka at gcc dot gnu.org

--- Comment #1 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Confirmed.  Reduced testcase:

template<typename T, typename... Args>
  concept baz = requires (T t, Args... args) { *t; };

template<typename T>
  requires baz<T>
void foo() { }

void bar()
{
  foo<int>();
}


GCC 10 segfaults during diagnostics, GCC 9 doesn't.

Looking into it.