From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2071) id F38313858035; Fri, 25 Nov 2022 22:30:20 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org F38313858035 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1669415421; bh=ZmSJzLwqmyG3EyDN2gv8DMaAovbp4DUE6go5PD2Y1d4=; h=From:To:Subject:Date:From; b=rYYBxA11UOK8GxNOcFODFwH6zu/Ui/CyLG+RbIOKvFj9hUB4LJCbnSO4U81efvBpi HYvcKC3rsMEBQM660d1iho6Kii7WRPYbqBPzVwZvntaYUEBsAQb3xHbklD6lu0Ab5/ t93e4pNe+B7BgNCVnsmHUIgnwtdZPZ/7u+bZ9jZU= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Harald Anlauf To: gcc-cvs@gcc.gnu.org Subject: [gcc r10-11095] Fortran: reject NULL actual argument without explicit interface [PR107576] X-Act-Checkin: gcc X-Git-Author: Harald Anlauf X-Git-Refname: refs/heads/releases/gcc-10 X-Git-Oldrev: ac5044574cc4edbd43aacb09461bbaa0cedc684b X-Git-Newrev: b3b48f883d31910f2672640de2f5ff59e765488c Message-Id: <20221125223020.F38313858035@sourceware.org> Date: Fri, 25 Nov 2022 22:30:20 +0000 (GMT) List-Id: https://gcc.gnu.org/g:b3b48f883d31910f2672640de2f5ff59e765488c commit r10-11095-gb3b48f883d31910f2672640de2f5ff59e765488c Author: Harald Anlauf Date: Thu Nov 17 21:36:49 2022 +0100 Fortran: reject NULL actual argument without explicit interface [PR107576] gcc/fortran/ChangeLog: PR fortran/107576 * interface.c (gfc_procedure_use): Reject NULL as actual argument when there is no explicit procedure interface. gcc/testsuite/ChangeLog: PR fortran/107576 * gfortran.dg/null_actual_3.f90: New test. (cherry picked from commit 820c25c83561085f54268bd536f9d216d03c3e18) Diff: --- gcc/fortran/interface.c | 8 ++++++++ gcc/testsuite/gfortran.dg/null_actual_3.f90 | 18 ++++++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/gcc/fortran/interface.c b/gcc/fortran/interface.c index a8a88f19908..19ba7fd65dc 100644 --- a/gcc/fortran/interface.c +++ b/gcc/fortran/interface.c @@ -3968,6 +3968,14 @@ gfc_procedure_use (gfc_symbol *sym, gfc_actual_arglist **ap, locus *where) return false; } + if (a->expr && a->expr->expr_type == EXPR_NULL) + { + gfc_error ("Passing intrinsic NULL as actual argument at %L " + "requires an explicit interface", &a->expr->where); + a->expr->error = 1; + return false; + } + /* TS 29113, C407b. */ if (a->expr && a->expr->expr_type == EXPR_VARIABLE && symbol_rank (a->expr->symtree->n.sym) == -1) diff --git a/gcc/testsuite/gfortran.dg/null_actual_3.f90 b/gcc/testsuite/gfortran.dg/null_actual_3.f90 new file mode 100644 index 00000000000..ea49f9630c9 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/null_actual_3.f90 @@ -0,0 +1,18 @@ +! { dg-do compile } +! { dg-options "-fallow-argument-mismatch -w" } +! PR fortran/107576 +! Contributed by G.Steinmetz + +program p + implicit none + interface + subroutine r(y) + integer, pointer :: y(:) + end subroutine r + end interface + integer, pointer :: z(:) => null() + call r(z) + call s(z) + call r(null(z)) + call s(null(z)) ! { dg-error "requires an explicit interface" } +end