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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/102368] Failure to compile program using the C_SIZEOF function in ISO_C_BINDING Date: Thu, 11 Nov 2021 22:53:22 +0000 [thread overview] Message-ID: <bug-102368-4-H30fqSkpZ1@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-102368-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102368 --- Comment #2 from anlauf at gcc dot gnu.org --- Testing the following patch: diff --git a/gcc/fortran/check.c b/gcc/fortran/check.c index ffa07b510cd..f325e5e4d5f 100644 --- a/gcc/fortran/check.c +++ b/gcc/fortran/check.c @@ -5272,13 +5272,18 @@ is_c_interoperable (gfc_expr *expr, const char **msg, bool c_loc, bool c_f_ptr) && !gfc_simplify_expr (expr->ts.u.cl->length, 0)) gfc_internal_error ("is_c_interoperable(): gfc_simplify_expr failed"); - if (!c_loc && expr->ts.u.cl - && (!expr->ts.u.cl->length - || expr->ts.u.cl->length->expr_type != EXPR_CONSTANT - || mpz_cmp_si (expr->ts.u.cl->length->value.integer, 1) != 0)) + if (!c_loc && expr->ts.u.cl) { - *msg = "Type shall have a character length of 1"; - return false; + bool len_ok = (expr->ts.u.cl->length + && expr->ts.u.cl->length->expr_type == EXPR_CONSTANT); + /* F2008: character variable of constant length is interoperable. */ + if (len_ok && !(gfc_option.allow_std & GFC_STD_F2008)) + len_ok = mpz_cmp_si (expr->ts.u.cl->length->value.integer, 1) != 0; + if (!len_ok) + { + *msg = "Type shall have a character length of 1"; + return false; + } } }
next prev parent reply other threads:[~2021-11-11 22:53 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-09-16 14:49 [Bug fortran/102368] New: " longb at cray dot com 2021-11-11 22:21 ` [Bug fortran/102368] " anlauf at gcc dot gnu.org 2021-11-11 22:53 ` anlauf at gcc dot gnu.org [this message] 2021-11-12 17:41 ` anlauf at gcc dot gnu.org 2021-11-12 21:36 ` anlauf at gcc dot gnu.org 2021-11-13 21:15 ` anlauf at gcc dot gnu.org
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