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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/93758] Building x86_64-w64-mingw32-gcc (mingw-w64) on
 macOS Catalina results in "internal compiler error: Segmentation
 fault"
Date: Sun, 18 Jul 2021 07:34:39 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D93758

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://trac.macports.org/t
                   |                            |icket/60091

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>during GIMPLE pass: ccp
/path/to/gcc-9.2.0/libgfortran/generated/norm2_r4.c: In function =E2=80=98n=
orm2_r4=E2=80=99:
/path/to/gcc-9.2.0/libgfortran/generated/norm2_r4.c:213:1: internal compiler
error: Segmentation fault: 11

I am 99% sure this is GMP/MPFR being miscompiled or compiled with the wrong
options and not able to run on your host.

Yes that is exactly what the macports ticket says:
https://trac.macports.org/ticket/60091#comment:13=