diff options
Diffstat (limited to 'gcc/fortran/trans-const.c')
| -rw-r--r-- | gcc/fortran/trans-const.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/gcc/fortran/trans-const.c b/gcc/fortran/trans-const.c index fd3d58f..4db3512 100644 --- a/gcc/fortran/trans-const.c +++ b/gcc/fortran/trans-const.c @@ -281,13 +281,19 @@ gfc_conv_constant_to_tree (gfc_expr * expr) case BT_LOGICAL: if (expr->representation.string) - return fold_build1 (VIEW_CONVERT_EXPR, - gfc_get_logical_type (expr->ts.kind), - gfc_build_string_const (expr->representation.length, - expr->representation.string)); + { + tree tmp = fold_build1 (VIEW_CONVERT_EXPR, + gfc_get_int_type (expr->ts.kind), + gfc_build_string_const (expr->representation.length, + expr->representation.string)); + if (!integer_zerop (tmp) && !integer_onep (tmp)) + gfc_warning ("Assigning value other than 0 or 1 to LOGICAL" + " has undefined result at %L", &expr->where); + return fold_convert (gfc_get_logical_type (expr->ts.kind), tmp); + } else return build_int_cst (gfc_get_logical_type (expr->ts.kind), - expr->value.logical); + expr->value.logical); case BT_COMPLEX: if (expr->representation.string) |