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From: "amacleod at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/103691] [12 Regression] ICE in
 get_array_ctor_element_at_index, at fold-const.c:13314 since
 r12-4694-gcb153222404e2e14
Date: Tue, 14 Dec 2021 15:43:42 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103691

--- Comment #2 from Andrew Macleod <amacleod at redhat dot com> ---
Its triggering an assert in the gimple folder when trying to process:

# DEBUG D.4293 =3D> &a[0]

The constructor shows:

  static real(kind=3D4) a[0] =3D {[0 ... -1]=3D2.0e+0};

is that a range of 0 to -1?  its triggering an assert in line 13314 of
fold_const:

gcc_checking_assert (wi::le_p (index, max_index, index_sgn));

it looks to be because max_index is less than index?

The referenced change causes this because it now calls gimple_fold on all s=
tmts
instead of just ranger specific ones.  I presume we are suppose to call fol=
d on
debug stmts too?=