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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109521

Sam James <sjames at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[11/12/13 Regression]       |[11/12/13 Regression]
                   |Checking ICE with canonical |Checking ICE with canonical
                   |types differ for identical  |types differ for identical
                   |types =E2=80=98UBYTE [7]=E2=80=99 {aka      |types =E2=
=80=98UBYTE [7]=E2=80=99 {aka
                   |=E2=80=98unsigned char [7]=E2=80=99} and    |=E2=80=98u=
nsigned char [7]=E2=80=99} and
                   |=E2=80=98unsigned char [7]=E2=80=99         |=E2=80=98u=
nsigned char [7]=E2=80=99 since
                   |                            |r11-6508-gabb1b6058c09a7
                 CC|                            |msebor at gcc dot gnu.org

--- Comment #3 from Sam James <sjames at gcc dot gnu.org> ---
Bisect says:

abb1b6058c09a7c0430d9bf019466ada07ca7b40 is the first bad commit
commit abb1b6058c09a7c0430d9bf019466ada07ca7b40
Author: Martin Sebor <msebor@redhat.com>
Date:   Wed Jan 6 13:44:27 2021 -0700

    PR c++/95768 - pretty-printer ICE on -Wuninitialized with allocated sto=
rage

i.e. r11-6508-gabb1b6058c09a7.=