[Bug c++/100261] [11/12 Regression] ICE: tree check: expected var_decl or type_decl, have error_mark in emit_tinfo_decl, at cp/rtti.c:1643

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100261

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Jason Merrill
<ja...@gcc.gnu.org>:

https://gcc.gnu.org/g:fff482625ab184210d9121515b9ea98945dc0b6f

commit r11-8434-gfff482625ab184210d9121515b9ea98945dc0b6f
Author: Jason Merrill <ja...@redhat.com>
Date:   Tue May 18 17:15:42 2021 -0400

    c++: ICE with bad definition of decimal32 [PR100261]

    The change to only look at the global binding for non-classes meant that
    here, when dealing with decimal32 which is magically mangled like its first
    non-static data member, we got a collision with the mangling for float.
    Fixed by also looking up an existing binding for such magical classes.

            PR c++/100261

    gcc/cp/ChangeLog:

            * rtti.c (get_tinfo_decl_direct): Check TYPE_TRANSPARENT_AGGR.

    gcc/testsuite/ChangeLog:

            * g++.dg/dfp/mangle-6.C: New test.