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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/103230] ipa-modref-tree.h:550:33: runtime error: load of
 value 255, which is not a valid value for type 'bool'
Date: Sun, 14 Nov 2021 10:01:23 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103230

--- Comment #4 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
(In reply to hubicka from comment #3)
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103230
> >=20
> > --- Comment #2 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
> > > How do you build ubsan compiler?
> >=20
> > F=3D"-O0 -g -fsanitize=3Dundefined" ; make -j16 all-host -k CFLAGS=3D"$=
F"
> > CXXFLAGS=3D"$F"  LDFLAGS=3D"$F"
> >=20
> > is the fastest approach.
> Thanks, it is similar to what I tried.  I guess there should be no ";"
> but yet it leds to misconfigured libiberty for me on kunlun.  I will
> look into that.

Note that kunlun may have an old system GCC compiler.=