From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.gmx.net (mout.gmx.net [212.227.15.15]) by sourceware.org (Postfix) with ESMTPS id 9942F3858412; Wed, 7 Dec 2022 20:57:22 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 9942F3858412 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmx.de Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmx.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.de; s=s31663417; t=1670446641; bh=z4dSmq78YHrIpUouQa2U+3hn6B2Kq91MwPdFT0q6H08=; h=X-UI-Sender-Class:From:To:Subject:Date; b=cU0hzsVHyAAEw7kgWrb1gAXJOwla8mA7vtksapcK+i5pFX+N200hNPOq/5YUkGk1r AWyj2WT7r3l3n61LgVpS3UT+llRWpI68J0onEujPBZvRrL7FFRaoEYtTTEOn5eoCo3 c+VVy0eZkFt1qMXzpTUENkS/Xl0+LaW6F7T8FChEDl0234NABVIzye3fW2ilvVXWwW 4fsYpZf9/Mv4O9YUhDPsf10Xd2IkzE3iLkGO9hrOMe8W2KIpMdRMmQj9Pw0qJ3smIN 9sqKIfsAC6d9QJOAM/oYsasSF7koSiEB1zXw9VJceoH66u4TaVKwZt+LXGDgefmuHn qyMqUzV0etfqA== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from [93.207.90.66] ([93.207.90.66]) by web-mail.gmx.net (3c-app-gmx-bs03.server.lan [172.19.170.52]) (via HTTP); Wed, 7 Dec 2022 21:57:20 +0100 MIME-Version: 1.0 Message-ID: From: Harald Anlauf To: fortran , gcc-patches Subject: [PATCH] Fortran: handle zero-sized arrays in ctors with typespec [PR108010] Content-Type: multipart/mixed; boundary=sgnirk-6aea94a8-9b18-4136-b3f8-c43c3004d3ab Date: Wed, 7 Dec 2022 21:57:20 +0100 Importance: normal Sensitivity: Normal X-Priority: 3 X-Provags-ID: V03:K1:I0q2IjNcSG0T9xzgRWtyUXjUHd4i7GDOxz9UPhfCPUBvOr8YLvxfFeNuBRPcfDTAN2XB4 /KNeTHJ5DH/8GGuC8s0ljsX2fMu/AWg6E5VJ6s6yXc/gJ1Z5f1pyfxnqrfq3KayfF5XYQXYzi+ah viyKHIblGSV5IQVJQlpo9w0eU7VADbHI7P5OOC0RxpCIMyUN9hKUr351VHa6f5QqCr/ze8VkDCG3 RsFVOEP+hTXibVV62V9Jgyw8fAHqdLHcSVjekgM5M9dWyiaTWAD09ZZl8ipTdX6oqOQv8fmEpqy1 ZA= UI-OutboundReport: notjunk:1;M01:P0:zCeflCcWgdI=;5DUXFsHoi9fkD4DoO5m0Dm7wqYT CNE3adNq0EImboS5AILti2DrNpr7wkF5x/jKjcFmndpmxNJ7tlyzGDllFSKLV06bQfOUkQErF jQBghcwiWHnElV5VrYVUsNDdZzT7d8Hf5duyTdCqYsdgj/ObvtF3dkluhuUn2di/UTRPRdF3B UiTe05hsOwMjfK9wVAFYPDAMOScJWMcBSEBKGxFgpHPsAvXZMbnsa7zbkEK/2aCzbrukpN65g JkTcKAi5PrLPV2bDgcwUmNRR2q0L07mlTA/fhKcRLzKLI7AbT7UWRZjIKOOeODt8qM9BxSb8M Tu748QoPqIU7gq70psN4d9MJ/tWx2UoD11O5WQmXd3uLEAJWoIZc7acE3nhZ99dRkQMnSM6TH iZI8p2kWXA/WihwNo3RTyUdPKYYohjgKpHtkdN5KA7KUCHJBaP27zwOkPcolV67cMTqFT2cjX V50jwGAgL/cclu1ZYEvsahMflb3vkyidyB/VLXKvGZBPcWBbT0vc6g3GD6FEvMIQj7T3N/TNm Fjp5+eLjtEgp/byLqH1eltWNLSK5qGKBhn8UtsAc2IrvVF91iE4+dpobWGd/QXVdjxMiaqEOX lwYbVzAEWMsLEG3vi0nOBtvyLlFHH8AVS4OmGtEOK6x8MwCihM8k6zoxPrdyO7vuzhLNHARAE L8OFyjeTAEMQl6FYHwcfclxSb/cTBLuzTVlAbiVxJqaTnPjeXQ9eR7A//bFrcNNqOBvYNDKbf uM0Y2LV9Nn5tK8QVmT0ZfHJiWva6hGr3qYEwuS+JE7o887MB+yQt/jppFhJML8LsaRc7nEtjF PSTfJ0g7ZqO4MDayyIuY7szw== X-Spam-Status: No, score=-13.3 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,GIT_PATCH_0,RCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: --sgnirk-6aea94a8-9b18-4136-b3f8-c43c3004d3ab Content-Type: text/plain; charset=UTF-8 Dear all, we need to be careful about zero-sized arrays in arithmetic reductions (unary & binary), as we otherwise may hit a NULL pointer dereference on valid code. The actual fix is straightforward, see attached patch. Regtested on x86_64-pc-linux-gnu. OK for mainline? Thanks, Harald --sgnirk-6aea94a8-9b18-4136-b3f8-c43c3004d3ab Content-Type: text/x-patch Content-Disposition: attachment; filename=pr108010.diff Content-Transfer-Encoding: quoted-printable =46rom 02a8b7308d04dc84fb13b077bd3b2fe01e15c92e Mon Sep 17 00:00:00 2001 From: Harald Anlauf Date: Wed, 7 Dec 2022 21:50:23 +0100 Subject: [PATCH] Fortran: handle zero-sized arrays in ctors with typespec [PR108010] gcc/fortran/ChangeLog: PR fortran/108010 * arith.cc (reduce_unary): Handle zero-sized arrays. (reduce_binary_aa): Likewise. gcc/testsuite/ChangeLog: PR fortran/108010 * gfortran.dg/pr108010.f90: New test. =2D-- gcc/fortran/arith.cc | 24 ++++++++++-- gcc/testsuite/gfortran.dg/pr108010.f90 | 54 ++++++++++++++++++++++++++ 2 files changed, 74 insertions(+), 4 deletions(-) create mode 100644 gcc/testsuite/gfortran.dg/pr108010.f90 diff --git a/gcc/fortran/arith.cc b/gcc/fortran/arith.cc index c4ab75b401c..c0d12cfad9d 100644 =2D-- a/gcc/fortran/arith.cc +++ b/gcc/fortran/arith.cc @@ -1342,8 +1342,16 @@ reduce_unary (arith (*eval) (gfc_expr *, gfc_expr *= *), gfc_expr *op, else { gfc_constructor *c =3D gfc_constructor_first (head); - r =3D gfc_get_array_expr (c->expr->ts.type, c->expr->ts.kind, - &op->where); + if (c =3D=3D NULL) + { + /* Handle zero-sized arrays. */ + r =3D gfc_get_array_expr (op->ts.type, op->ts.kind, &op->where); + } + else + { + r =3D gfc_get_array_expr (c->expr->ts.type, c->expr->ts.kind, + &op->where); + } r->shape =3D gfc_copy_shape (op->shape, op->rank); r->rank =3D op->rank; r->value.constructor =3D head; @@ -1501,8 +1509,16 @@ reduce_binary_aa (arith (*eval) (gfc_expr *, gfc_ex= pr *, gfc_expr **), else { gfc_constructor *c =3D gfc_constructor_first (head); - r =3D gfc_get_array_expr (c->expr->ts.type, c->expr->ts.kind, - &op1->where); + if (c =3D=3D NULL) + { + /* Handle zero-sized arrays. */ + r =3D gfc_get_array_expr (op1->ts.type, op1->ts.kind, &op1->where); + } + else + { + r =3D gfc_get_array_expr (c->expr->ts.type, c->expr->ts.kind, + &op1->where); + } r->shape =3D gfc_copy_shape (op1->shape, op1->rank); r->rank =3D op1->rank; r->value.constructor =3D head; diff --git a/gcc/testsuite/gfortran.dg/pr108010.f90 b/gcc/testsuite/gfortr= an.dg/pr108010.f90 new file mode 100644 index 00000000000..303b2b98220 =2D-- /dev/null +++ b/gcc/testsuite/gfortran.dg/pr108010.f90 @@ -0,0 +1,54 @@ +! { dg-do run } +! PR fortran/108010 - ICE in reduce_unary, reduce_binary_aa +! Contributed by G.Steinmetz + +program p + implicit none + print *, + [integer :: [real ::]] + print *, - [integer :: [real ::]] + print *, 1 + [integer :: [real ::]] + print *, 1 - [integer :: [real ::]] + print *, 2 * [integer :: [real ::]] + print *, - [real :: [real ::], 2] + print *, + [integer :: [real ::], 2] + print *, - [integer :: [real ::], 2] + print *, 1 + [integer :: [real ::], 2] + print *, 1 - [integer :: [real ::], 2] + print *, 2 * [integer :: [real ::], 2] + print *, [integer :: [real ::]] + [integer :: [real ::]] + print *, [integer :: [real ::]] - [integer :: [real ::]] + print *, [integer :: [real ::]] * [integer :: [real ::]] + print *, [integer :: [real ::], 2] + [real :: [real ::], 3] + print *, [integer :: [real ::], 2] - [real :: [real ::], 3] + print *, [integer :: [real ::], 2] * [real :: [real ::], 3] + + ! Validate type of resulting arrays + if (.not. is_int ([integer :: [real ::]] )) sto= p 1 + if (.not. is_int ([integer :: [real ::]] + [integer :: [real ::]])) sto= p 2 + if (.not. is_real([real :: [integer ::]] )) sto= p 3 + if (.not. is_real([real :: [integer ::]] + [real :: [integer ::]])) sto= p 4 + if (.not. is_real([real :: [integer ::]] + [integer :: [real ::]])) sto= p 5 + if (.not. is_real([integer :: [real ::]] + [real :: [integer ::]])) sto= p 6 + +contains + + logical function is_int (x) + class(*) :: x(:) + select type (x) + type is (integer) + is_int =3D .true. + class default + is_int =3D .false. + end select + end function is_int + + logical function is_real (x) + class(*) :: x(:) + select type (x) + type is (real) + is_real =3D .true. + class default + is_real =3D .false. + end select + end function is_real +end =2D- 2.35.3 --sgnirk-6aea94a8-9b18-4136-b3f8-c43c3004d3ab--