From 5f7cdea34e118776d0ccd2ff3dda0f5acab18a94 Mon Sep 17 00:00:00 2001 From: Harald Anlauf Date: Tue, 7 Dec 2021 23:06:41 +0100 Subject: Fortran: dimensions of an array have to be non-negative gcc/fortran/ChangeLog: PR fortran/103610 * array.c (spec_dimen_size): Fix simplification of SHAPE: dimensions must be non-negative. gcc/testsuite/ChangeLog: PR fortran/103610 * gfortran.dg/shape_11.f90: New test. --- gcc/fortran/array.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'gcc/fortran/array.c') diff --git a/gcc/fortran/array.c b/gcc/fortran/array.c index e5e2209..e4891df 100644 --- a/gcc/fortran/array.c +++ b/gcc/fortran/array.c @@ -2296,8 +2296,7 @@ gfc_copy_iterator (gfc_iterator *src) /********* Subroutines for determining the size of an array *********/ /* These are needed just to accommodate RESHAPE(). There are no - diagnostics here, we just return a negative number if something - goes wrong. */ + diagnostics here, we just return false if something goes wrong. */ /* Get the size of single dimension of an array specification. The @@ -2330,6 +2329,9 @@ spec_dimen_size (gfc_array_spec *as, int dimen, mpz_t *result) mpz_add_ui (*result, *result, 1); + if (mpz_cmp_si (*result, 0) < 0) + mpz_set_si (*result, 0); + return true; } -- cgit v1.1