From patchwork Thu Jan 4 12:35:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abdul Basit Ijaz X-Patchwork-Id: 83306 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id DF9D4386186D for ; Thu, 4 Jan 2024 12:36:53 +0000 (GMT) X-Original-To: gdb-patches@sourceware.org Delivered-To: gdb-patches@sourceware.org Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.11]) by sourceware.org (Postfix) with ESMTPS id 9E4CD3858024 for ; Thu, 4 Jan 2024 12:35:55 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 9E4CD3858024 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=intel.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 9E4CD3858024 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=192.198.163.11 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1704371760; cv=none; b=nzhY7qMnUo9sa8XS7a3VeYydhaadIQZkoYWYNMEVz3/khGdsRnJDanqzW4tuESH0sAkkOe7kqUJAbolFCSLg7XbhQ66s6qmGI9bqLeeh64c1RohJBt2tt9QLlArSNUhCRp8jripdcZTzD3NRxv1SUW/2jkMFkvtWFwQ25jQgp40= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1704371760; c=relaxed/simple; bh=T8ER0pkwOKYbcocrBrYe73naV7tD+aAGzH9qE3nqZAc=; h=DKIM-Signature:From:To:Subject:Date:Message-Id:MIME-Version; b=kArTULlS/JpjMyDVRbnOqqt0usUNDmZzgYKUZGD2SqiYJcxOJhpaztAyCVFmfugdIK0U8paCFwHSus14mqapL4WhiFsO1VRHQ+mci+SQCDZ9iO1KW2E/Lqv2m4vDdndHbEpk/C8ZNnj3BoyhrtO0/L3ZVOEgpnvNttZz84xFef8= ARC-Authentication-Results: i=1; server2.sourceware.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1704371756; x=1735907756; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=T8ER0pkwOKYbcocrBrYe73naV7tD+aAGzH9qE3nqZAc=; b=P9YqajaFoMRenVXgsG/ReTQD5P0yQG5F6GXlvRzVQB4SBAUKpzZMSLgF rKsMl6/cYPXNkIncOQaBCKt/w2U1DUElF/2zRd/vJXUg3wX3ZvfNpK5Kf Z2hLSAf1vJUSGgWoJSqKEB3jm2Qh4XjRm7wPyUN4Gm/7las4k7K82Y8Co Qky2DRkum8pv1wDL6krjoSAOeBW01bTCLW9rEow1QcPgMuG3Qh4t8eskg JHiix1EFBoo4UG0P6vL64NF9WHDCgdcQFKDFOtBrzBZBAIbeEUXXZakCN U8eTCRR1SHri+ttkRKMi/RiAuJ5u2iSk4SBwR009ZFgIhsO8v6aLNAK5q A==; X-IronPort-AV: E=McAfee;i="6600,9927,10942"; a="4012225" X-IronPort-AV: E=Sophos;i="6.04,330,1695711600"; d="scan'208";a="4012225" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Jan 2024 04:35:54 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10942"; a="783859279" X-IronPort-AV: E=Sophos;i="6.04,330,1695711600"; d="scan'208";a="783859279" Received: from abijaz-mobl2.ger.corp.intel.com (HELO localhost) ([10.246.48.20]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Jan 2024 04:35:52 -0800 From: Abdul Basit Ijaz To: gdb-patches@sourceware.org Cc: abdul.b.ijaz@intel.com, thiago.bauermann@linaro.org, tom@tromey.com, simark@simark.ca, Bernhard Heckel Subject: [PATCH v4 2/3] gdb, types: Resolve pointer types dynamically Date: Thu, 4 Jan 2024 13:35:19 +0100 Message-Id: <20240104123520.7706-3-abdul.b.ijaz@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240104123520.7706-1-abdul.b.ijaz@intel.com> References: <20240104123520.7706-1-abdul.b.ijaz@intel.com> MIME-Version: 1.0 X-Spam-Status: No, score=-12.0 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, SPF_HELO_NONE, SPF_NONE, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gdb-patches-bounces+patchwork=sourceware.org@sourceware.org From: Bernhard Heckel This commit allows pointers to be dynamic types (on the outmost level). Similar to references, a pointer is considered a dynamic type if its target type is a dynamic type and it is on the outmost level. Also this commit removes the redundant code inside function "value_check_printable" for handling of DW_AT_associated type. The pointer resolution follows the one of references. This change generally makes the GDB output more verbose. We are able to print more details about a pointer's target like the dimension of an array. In Fortran, if we have a pointer to a dynamic type type buffer real, dimension(:), pointer :: ptr end type buffer type(buffer), pointer :: buffer_ptr allocate (buffer_ptr) allocate (buffer_ptr%ptr (5)) which then gets allocated, we now resolve the dynamic type before printing the pointer's type: Before: (gdb) ptype buffer_ptr type = PTR TO -> ( Type buffer real(kind=4) :: alpha(:) End Type buffer ) After: (gdb) ptype buffer_ptr type = PTR TO -> ( Type buffer real(kind=4) :: alpha(5) End Type buffer ) Similarly in C++ we can dynamically resolve e.g. pointers to arrays: int len = 3; int arr[len]; int (*ptr)[len]; int ptr = &arr; Once the pointer is assigned one gets: Before: (gdb) p ptr $1 = (int (*)[variable length]) 0x123456 (gdb) ptype ptr type = int (*)[variable length] After: (gdb) p ptr $1 = (int (*)[3]) 0x123456 (gdb) ptype ptr type = int (*)[3] For more examples see the modified/added test cases. Tested-by: Thiago Jung Bauermann --- gdb/gdbtypes.c | 7 +- gdb/testsuite/gdb.cp/vla-cxx.cc | 4 + gdb/testsuite/gdb.cp/vla-cxx.exp | 15 +++ gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp | 16 +-- .../gdb.fortran/pointer-to-pointer.exp | 2 +- gdb/testsuite/gdb.fortran/pointers.exp | 115 ++++++++++++++++++ gdb/testsuite/gdb.fortran/pointers.f90 | 29 +++++ gdb/valprint.c | 6 - 8 files changed, 177 insertions(+), 17 deletions(-) create mode 100644 gdb/testsuite/gdb.fortran/pointers.exp diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c index 2580b4f19ee..14589eafb93 100644 --- a/gdb/gdbtypes.c +++ b/gdb/gdbtypes.c @@ -2042,8 +2042,10 @@ is_dynamic_type_internal (struct type *type, int top_level) { type = check_typedef (type); - /* We only want to recognize references at the outermost level. */ - if (top_level && type->code () == TYPE_CODE_REF) + /* We only want to recognize references and pointers at the outermost + level. */ + if (top_level + && (type->code () == TYPE_CODE_REF || type->code () == TYPE_CODE_PTR)) type = check_typedef (type->target_type ()); /* Types that have a dynamic TYPE_DATA_LOCATION are considered @@ -2779,6 +2781,7 @@ resolve_dynamic_type_internal (struct type *type, switch (type->code ()) { case TYPE_CODE_REF: + case TYPE_CODE_PTR: { struct property_addr_info pinfo; diff --git a/gdb/testsuite/gdb.cp/vla-cxx.cc b/gdb/testsuite/gdb.cp/vla-cxx.cc index 0ecb130f676..83e238339ac 100644 --- a/gdb/testsuite/gdb.cp/vla-cxx.cc +++ b/gdb/testsuite/gdb.cp/vla-cxx.cc @@ -40,6 +40,10 @@ int main(int argc, char **argv) typedef typeof (vla) &vlareftypedef; vlareftypedef vlaref2 (vla); container c; + typeof (vla) *ptr = nullptr; + + // Before pointer assignment. + ptr = &vla; for (int i = 0; i < z; ++i) vla[i] = 5 + 2 * i; diff --git a/gdb/testsuite/gdb.cp/vla-cxx.exp b/gdb/testsuite/gdb.cp/vla-cxx.exp index 0a588220679..ade688cedda 100644 --- a/gdb/testsuite/gdb.cp/vla-cxx.exp +++ b/gdb/testsuite/gdb.cp/vla-cxx.exp @@ -23,6 +23,18 @@ if ![runto_main] { return -1 } +gdb_breakpoint [gdb_get_line_number "Before pointer assignment"] +gdb_continue_to_breakpoint "Before pointer assignment" + +gdb_test "ptype ptr" "= int \\(\\*\\)\\\[3\\\]" \ + "ptype ptr, before pointer assignment" + +gdb_test "print ptr" "= \\(int \\(\\*\\)\\\[3\\\]\\) 0x0" \ + "print ptr, before pointer assignment" + +gdb_test "print *ptr" "Cannot access memory at address 0x0" \ + "print *ptr, before pointer assignment" + gdb_breakpoint [gdb_get_line_number "vlas_filled"] gdb_continue_to_breakpoint "vlas_filled" @@ -33,3 +45,6 @@ gdb_test "print vlaref" " = \\(int \\(&\\)\\\[3\\\]\\) @$hex: \\{5, 7, 9\\}" # bug being tested, it's better not to depend on the exact spelling. gdb_test "print vlaref2" " = \\(.*\\) @$hex: \\{5, 7, 9\\}" gdb_test "print c" " = \\{e = \\{c = @$hex\\}\\}" +gdb_test "ptype ptr" "int \\(\\*\\)\\\[3\\\]" +gdb_test "print ptr" "\\(int \\(\\*\\)\\\[3\\\]\\) $hex" +gdb_test "print *ptr" " = \\{5, 7, 9\\}" diff --git a/gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp b/gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp index 26c64278103..72b79a87235 100644 --- a/gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp +++ b/gdb/testsuite/gdb.dwarf2/dynarr-ptr.exp @@ -154,7 +154,7 @@ gdb_test "print foo.three_ptr.all'length" \ " = 3" gdb_test "ptype foo.three_ptr.all" \ - " = array \\(<>\\) of integer" + " = array \\(1 \\.\\. 3\\) of integer" # foo.three_ptr @@ -177,7 +177,7 @@ gdb_test "print foo.three_ptr'length" \ " = 3" gdb_test "ptype foo.three_ptr" \ - " = access array \\(<>\\) of integer" + " = access array \\(1 \\.\\. 3\\) of integer" # foo.three_ptr_tdef.all @@ -203,7 +203,7 @@ gdb_test "print foo.three_ptr_tdef.all'length" \ " = 3" gdb_test "ptype foo.three_ptr_tdef.all" \ - " = array \\(<>\\) of integer" + " = array \\(1 \\.\\. 3\\) of integer" # foo.three_ptr_tdef @@ -226,7 +226,7 @@ gdb_test "print foo.three_ptr_tdef'length" \ " = 3" gdb_test "ptype foo.three_ptr_tdef" \ - " = access array \\(<>\\) of integer" + " = access array \\(1 \\.\\. 3\\) of integer" # foo.five_ptr.all @@ -258,7 +258,7 @@ gdb_test "print foo.five_ptr.all'length" \ " = 5" gdb_test "ptype foo.five_ptr.all" \ - " = array \\(<>\\) of integer" + " = array \\(2 \\.\\. 6\\) of integer" # foo.five_ptr @@ -287,7 +287,7 @@ gdb_test "print foo.five_ptr'length" \ " = 5" gdb_test "ptype foo.five_ptr" \ - " = access array \\(<>\\) of integer" + " = access array \\(2 \\.\\. 6\\) of integer" # foo.five_ptr_tdef.all @@ -319,7 +319,7 @@ gdb_test "print foo.five_ptr_tdef.all'length" \ " = 5" gdb_test "ptype foo.five_ptr_tdef.all" \ - " = array \\(<>\\) of integer" + " = array \\(2 \\.\\. 6\\) of integer" # foo.five_ptr_tdef @@ -348,4 +348,4 @@ gdb_test "print foo.five_ptr_tdef'length" \ " = 5" gdb_test "ptype foo.five_ptr_tdef" \ - " = access array \\(<>\\) of integer" + " = access array \\(2 \\.\\. 6\\) of integer" diff --git a/gdb/testsuite/gdb.fortran/pointer-to-pointer.exp b/gdb/testsuite/gdb.fortran/pointer-to-pointer.exp index 0fd5fb0996f..78b7ba17588 100644 --- a/gdb/testsuite/gdb.fortran/pointer-to-pointer.exp +++ b/gdb/testsuite/gdb.fortran/pointer-to-pointer.exp @@ -41,7 +41,7 @@ gdb_test "print buffer" \ gdb_test "ptype buffer" \ [multi_line \ "type = PTR TO -> \\( Type l_buffer" \ - " $real4 :: alpha\\(:\\)" \ + " $real4 :: alpha\\(5\\)" \ "End Type l_buffer \\)" ] gdb_test "ptype buffer%alpha" "type = $real4 \\(5\\)" diff --git a/gdb/testsuite/gdb.fortran/pointers.exp b/gdb/testsuite/gdb.fortran/pointers.exp new file mode 100644 index 00000000000..dafea392799 --- /dev/null +++ b/gdb/testsuite/gdb.fortran/pointers.exp @@ -0,0 +1,115 @@ +# Copyright 2024 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +standard_testfile "pointers.f90" +load_lib fortran.exp + +if {[prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} \ + {debug f90 quiet}]} { + return -1 +} + +if {![fortran_runto_main]} { + untested "could not run to main" + return -1 +} + +# Depending on the compiler being used, the type names can be printed +# differently. +set logical [fortran_logical4] +set real [fortran_real4] +set int [fortran_int4] +set complex [fortran_complex4] + +gdb_breakpoint [gdb_get_line_number "Before pointer assignment"] +gdb_continue_to_breakpoint "Before pointer assignment" +gdb_test "print logp" "= \\(PTR TO -> \\( $logical \\)\\) 0x0" \ + "print logp, not associated" +gdb_test "print *logp" "Cannot access memory at address 0x0" \ + "print *logp, not associated" +gdb_test "print comp" "= \\(PTR TO -> \\( $complex \\)\\) 0x0" \ + "print comp, not associated" +gdb_test "print *comp" "Cannot access memory at address 0x0" \ + "print *comp, not associated" +gdb_test "print charp" "= \\(PTR TO -> \\( character\\*1 \\)\\) 0x0" \ + "print charp, not associated" +gdb_test "print *charp" "Cannot access memory at address 0x0" \ + "print *charp, not associated" +gdb_test "print charap" "= \\(PTR TO -> \\( character\\*3 \\)\\) 0x0" \ + "print charap, not associated" +gdb_test "print *charap" "Cannot access memory at address 0x0" \ + "print *charap, not associated" +gdb_test "print intp" "= \\(PTR TO -> \\( $int \\)\\) 0x0" \ + "print intp, not associated" +gdb_test "print *intp" "Cannot access memory at address 0x0" \ + "print *intp, not associated" +gdb_test "print intap" " = " "print intap, not associated" +gdb_test "print realp" "= \\(PTR TO -> \\( $real \\)\\) 0x0" \ + "print realp, not associated" +gdb_test "print *realp" "Cannot access memory at address 0x0" \ + "print *realp, not associated" +gdb_test "print \$my_var = intp" "= \\(PTR TO -> \\( $int \\)\\) 0x0" +gdb_test "print cyclicp1" "= \\( i = -?\\d+, p = 0x0 \\)" \ + "print cyclicp1, not associated" +gdb_test "print cyclicp1%p" \ + "= \\(PTR TO -> \\( Type typewithpointer \\)\\) 0x0" \ + "print cyclicp1%p, not associated" + +gdb_breakpoint [gdb_get_line_number "Before value assignment"] +gdb_continue_to_breakpoint "Before value assignment" +gdb_test "print *(twop)%ivla2" "= " + +gdb_breakpoint [gdb_get_line_number "After value assignment"] +gdb_continue_to_breakpoint "After value assignment" +gdb_test "print logp" "= \\(PTR TO -> \\( $logical \\)\\) $hex\( <.*>\)?" +gdb_test "print *logp" "= \\.TRUE\\." +gdb_test "print comp" "= \\(PTR TO -> \\( $complex \\)\\) $hex\( <.*>\)?" +gdb_test "print *comp" "= \\(1,2\\)" +gdb_test "print charp" "= \\(PTR TO -> \\( character\\*1 \\)\\) $hex\( <.*>\)?" +gdb_test "print *charp" "= 'a'" +gdb_test "print charap" "= \\(PTR TO -> \\( character\\*3 \\)\\) $hex\( <.*>\)?" +gdb_test "print *charap" "= 'abc'" +gdb_test "print intp" "= \\(PTR TO -> \\( $int \\)\\) $hex\( <.*>\)?" +gdb_test "print *intp" "= 10" +gdb_test "print intap" "= \\(\\(1, 1, 3(, 1){7}\\) \\(1(, 1){9}\\)\\)" \ + "print intap, associated" +gdb_test "print intvlap" "= \\(2, 2, 2, 4(, 2){6}\\)" \ + "print intvlap, associated" +gdb_test "print realp" "= \\(PTR TO -> \\( $real \\)\\) $hex\( <.*>\)?" +gdb_test "print *realp" "= 3\\.14000\\d+" +gdb_test "print arrayOfPtr(2)%p" "= \\(PTR TO -> \\( Type two \\)\\) $hex\( <.*>\)?" +gdb_test "print *(arrayOfPtr(2)%p)" \ + "= \\( ivla1 = \\(11, 12, 13\\), ivla2 = \\(\\(211, 221\\) \\(212, 222\\)\\) \\)" +gdb_test "print arrayOfPtr(3)%p" "= \\(PTR TO -> \\( Type two \\)\\) 0x0" \ + "print arrayOfPtr(3)%p" + +gdb_test_multiple "print *(arrayOfPtr(3)%p)" \ + "print *(arrayOfPtr(3)%p), associated" { + # gfortran + -re -wrap "Cannot access memory at address 0x0" { + pass $gdb_test_name + } + # ifx + -re -wrap "Location address is not set." { + pass $gdb_test_name + } +} + +gdb_test "print cyclicp1" "= \\( i = 1, p = $hex\( <.*>\)? \\)" +gdb_test "print cyclicp1%p" "= \\(PTR TO -> \\( Type typewithpointer \\)\\) $hex\( <.*>\)?" +gdb_test "print *((integer*) &inta + 2)" "= 3" "print temporary pointer, array" +gdb_test "print *((integer*) &intvla + 3)" "= 4" "print temporary pointer, allocated vla" +gdb_test "print \$pc" "\\(PTR TO -> \\( void \\(\\) \\(\\) \\)\\) $hex " \ + "Print program counter" diff --git a/gdb/testsuite/gdb.fortran/pointers.f90 b/gdb/testsuite/gdb.fortran/pointers.f90 index 8708d505ada..0fb6b36a25c 100644 --- a/gdb/testsuite/gdb.fortran/pointers.f90 +++ b/gdb/testsuite/gdb.fortran/pointers.f90 @@ -20,14 +20,26 @@ program pointers integer, allocatable :: ivla2 (:, :) end type two + type :: typeWithPointer + integer i + type(typeWithPointer), pointer:: p + end type typeWithPointer + + type :: twoPtr + type (two), pointer :: p + end type twoPtr + logical, target :: logv complex, target :: comv character, target :: charv character (len=3), target :: chara integer, target :: intv integer, target, dimension (10,2) :: inta + integer, target, allocatable, dimension (:) :: intvla real, target :: realv type(two), target :: twov + type(twoPtr) :: arrayOfPtr (3) + type(typeWithPointer), target:: cyclicp1,cyclicp2 logical, pointer :: logp complex, pointer :: comp @@ -35,6 +47,7 @@ program pointers character (len=3), pointer :: charap integer, pointer :: intp integer, pointer, dimension (:,:) :: intap + integer, pointer, dimension (:) :: intvlap real, pointer :: realp type(two), pointer :: twop @@ -44,8 +57,14 @@ program pointers nullify (charap) nullify (intp) nullify (intap) + nullify (intvlap) nullify (realp) nullify (twop) + nullify (arrayOfPtr(1)%p) + nullify (arrayOfPtr(2)%p) + nullify (arrayOfPtr(3)%p) + nullify (cyclicp1%p) + nullify (cyclicp2%p) logp => logv ! Before pointer assignment comp => comv @@ -53,8 +72,14 @@ program pointers charap => chara intp => intv intap => inta + intvlap => intvla realp => realv twop => twov + arrayOfPtr(2)%p => twov + cyclicp1%i = 1 + cyclicp1%p => cyclicp2 + cyclicp2%i = 2 + cyclicp2%p => cyclicp1 logv = associated(logp) ! Before value assignment comv = cmplx(1,2) @@ -63,6 +88,10 @@ program pointers intv = 10 inta(:,:) = 1 inta(3,1) = 3 + allocate (intvla(10)) + intvla(:) = 2 + intvla(4) = 4 + intvlap => intvla realv = 3.14 allocate (twov%ivla1(3)) diff --git a/gdb/valprint.c b/gdb/valprint.c index 00943c1111a..2da435d153b 100644 --- a/gdb/valprint.c +++ b/gdb/valprint.c @@ -1156,12 +1156,6 @@ value_check_printable (struct value *val, struct ui_file *stream, return 0; } - if (type_not_associated (val->type ())) - { - val_print_not_associated (stream); - return 0; - } - if (type_not_allocated (val->type ())) { val_print_not_allocated (stream);