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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/56852] [4.8/4.9/5 Regression] ICE on invalid: "Bad array reference" for an undeclared loop variable
Date: Wed, 18 Feb 2015 13:29:00 -0000
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X-Bugzilla-Type: changed
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: fortran
X-Bugzilla-Version: 4.9.0
X-Bugzilla-Keywords: error-recovery, ice-on-invalid-code, patch
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X-Bugzilla-Who: dominiq at lps dot ens.fr
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56852

--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> There is a simple fix, may be too big hammer:
> ...

The patch in comment 3 fixes the ICE, bur breaks many tests (700+) for error:

FAIL: gfortran.dg/abstract_type_3.f03   -O   (test for errors, line 44)
FAIL: gfortran.dg/abstract_type_6.f03   -O   (test for errors, line 43)
FAIL: gfortran.dg/advance_3.f90   -O   (test for errors, line 8)
FAIL: gfortran.dg/alloc_comp_constraint_1.f90   -O   (test for errors, line 18)
FAIL: gfortran.dg/alloc_comp_constraint_1.f90   -O   (test for errors, line 20)
FAIL: gfortran.dg/allocate_alloc_opt_1.f90   -O   (test for errors, line 19)
...