[Bug c++/93551] [10 Regression] Call from templated function to constrained constructor segfaults when attempting to narrow to bool

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93551

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jason Merrill <jason@gcc.gnu.org>:

https://gcc.gnu.org/g:85409531ff032a008ebfbb715344648f15492dac

commit r10-6438-g85409531ff032a008ebfbb715344648f15492dac
Author: Jason Merrill <jason@redhat.com>
Date:   Tue Feb 4 17:18:35 2020 -0500

    c++: Fix error-recovery with concepts.

    Here, push_tinst_level refused to push into the scope of Foo::Foo
    because it was triggered from the ill-formed function fun.  But we didn't
    check the return value and tried to pop the un-pushed level.

        PR c++/93551
        * constraint.cc (satisfy_declaration_constraints): Check return
        value of push_tinst_level.