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GET /api/1.1/patches/2223603/?format=api
{ "id": 2223603, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2223603/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/20260415173801.963400-1-torbjorn.svensson@foss.st.com/", "project": { "id": 17, "url": "http://patchwork.ozlabs.org/api/1.1/projects/17/?format=api", "name": "GNU Compiler Collection", "link_name": "gcc", "list_id": "gcc-patches.gcc.gnu.org", "list_email": "gcc-patches@gcc.gnu.org", "web_url": null, "scm_url": null, "webscm_url": null }, "msgid": "<20260415173801.963400-1-torbjorn.svensson@foss.st.com>", "date": "2026-04-15T17:31:10", "name": "[v2] analyzer: do not segfault when printing unknown impl location", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "354a135dcfc4eac42905ac56a70bc8ff35ac1991", "submitter": { "id": 84848, "url": "http://patchwork.ozlabs.org/api/1.1/people/84848/?format=api", "name": "Torbjörn SVENSSON", "email": "torbjorn.svensson@foss.st.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/20260415173801.963400-1-torbjorn.svensson@foss.st.com/mbox/", "series": [ { "id": 500021, "url": "http://patchwork.ozlabs.org/api/1.1/series/500021/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=500021", "date": "2026-04-15T17:31:10", "name": "[v2] analyzer: do not segfault when printing unknown impl location", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/500021/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2223603/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2223603/checks/", "tags": {}, "headers": { "Return-Path": "<gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "gcc-patches@gcc.gnu.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "gcc-patches@gcc.gnu.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=foss.st.com header.i=@foss.st.com header.a=rsa-sha256\n header.s=selector2 header.b=bzbsngBE;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=38.145.34.32; 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helo=smtpO365.st.com;", "From": "=?utf-8?q?Torbj=C3=B6rn_SVENSSON?= <torbjorn.svensson@foss.st.com>", "To": "<gcc-patches@gcc.gnu.org>, <dmalcolm@redhat.com>, <rguenther@suse.de>", "CC": "=?utf-8?q?Torbj=C3=B6rn_SVENSSON?= <torbjorn.svensson@foss.st.com>", "Subject": "[PATCH v2] analyzer: do not segfault when printing unknown impl\n location", "Date": "Wed, 15 Apr 2026 19:31:10 +0200", "Message-ID": "<20260415173801.963400-1-torbjorn.svensson@foss.st.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<d08653e0ea4592ecc8bc0fbe4c630081b119429f.camel@redhat.com>", "References": "<d08653e0ea4592ecc8bc0fbe4c630081b119429f.camel@redhat.com>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"UTF-8\"", "Content-Transfer-Encoding": "8bit", "X-Originating-IP": "[10.74.22.122]", "X-ClientProxiedBy": "ENXCAS1NODE2.st.com (10.75.128.138) To STKDAG1NODE2.st.com\n (10.75.128.133)", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-TrafficTypeDiagnostic": "DU6PEPF0000A7E2:EE_|PA1PR10MB9410:EE_", "X-MS-Office365-Filtering-Correlation-Id": "01ded070-390c-4b9c-0bbf-08de9b15c7cb", "X-MS-Exchange-SenderADCheck": "1", "X-MS-Exchange-AntiSpam-Relay": "0", "X-Microsoft-Antispam": "BCL:0;\n ARA:13230040|82310400026|42112799006|1800799024|36860700016|376014|56012099003|22082099003|18002099003;", "X-Microsoft-Antispam-Message-Info": "\n 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", "X-Forefront-Antispam-Report": "CIP:164.130.1.60; 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Ip=[164.130.1.60];\n Helo=[smtpO365.st.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n DU6PEPF0000A7E2.eurprd02.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "PA1PR10MB9410", "X-BeenThere": "gcc-patches@gcc.gnu.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "Gcc-patches mailing list <gcc-patches.gcc.gnu.org>", "List-Unsubscribe": "<https://gcc.gnu.org/mailman/options/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=unsubscribe>", "List-Archive": "<https://gcc.gnu.org/pipermail/gcc-patches/>", "List-Post": "<mailto:gcc-patches@gcc.gnu.org>", "List-Help": "<mailto:gcc-patches-request@gcc.gnu.org?subject=help>", "List-Subscribe": "<https://gcc.gnu.org/mailman/listinfo/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=subscribe>", "Errors-To": "gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org" }, "content": "Changes since v1:\n\n- Removed changes to dumpfile.h\n- If the char pointer is NULL, then print \"<unknown>\" instead.\n\nWith below patch, arm-none-eabi builds fine on macOS, Linux and cross-building for Windows on Linux.\nI've test the ice-pr124055-1.c and it no longer segfaults cc1 so I think the change is fine.\nCurrently re-running the full testsuite. Is this ok for trunk if there are no regressions?\n\nKind regards,\nTorbjörn\n\n--\n\nWhen dump_impl_location_t::m_function or dump_impl_location_t::m_file is NULL,\nthen GCC segfaults when attempting to print the location.\n\n$ ./bin/arm-none-eabi-gcc ../ice-pr124055-1.c -fanalyzer -Wanalyzer-too-complex -Wanalyzer-symbol-too-complex -O -fdump-analyzer -frounding-math -S -o /dev/null -wrapper lldb,--\n(lldb) target create \"/build/r16-8473-g5cc0ead3625fe6/bin/../lib/gcc/arm-none-eabi/16.0.1/cc1\"\n...\n(lldb) r\nProcess 31748 launched: '/build/r16-8473-g5cc0ead3625fe6/lib/gcc/arm-none-eabi/16.0.1/cc1' (arm64)\nProcess 31748 stopped\n* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x0)\n frame #0: 0x000000018ae7ea44 libsystem_platform.dylib`_platform_strlen + 4\nlibsystem_platform.dylib`_platform_strlen:\n-> 0x18ae7ea44 <+4>: ldr q0, [x1]\n 0x18ae7ea48 <+8>: adr x3, 0x18ae7e980 ; ___lldb_unnamed_symbol320\n 0x18ae7ea4c <+12>: ldr q2, [x3], #0x10\n 0x18ae7ea50 <+16>: and x2, x0, #0xf\nTarget 0: (cc1) stopped.\n(lldb) bt\n* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x0)\n * frame #0: 0x000000018ae7ea44 libsystem_platform.dylib`_platform_strlen + 4\n frame #1: 0x0000000101223d68 cc1`pp_quoted_string(pretty_printer*, char const*, unsigned long) + 244\n frame #2: 0x0000000101220628 cc1`pretty_printer::format(text_info&) + 2772\n frame #3: 0x0000000101108b8c cc1`ana::logger::log_va(char const*, char**) + 100\n frame #4: 0x0000000101108970 cc1`ana::logger::log(char const*, ...) + 28\n frame #5: 0x0000000101129da4 cc1`ana::impl_region_model_context::on_unexpected_tree_code(tree_node*, dump_location_t const&) + 80\n frame #6: 0x0000000101174d3c cc1`ana::region_model_manager::get_region_for_unexpected_tree_code(ana::region_model_context*, tree_node*, dump_location_t const&) + 184\n...\n\nThis happens when GCC is built with GCC <4.8 or with another toolchain,\nlike LLVM. Seen on macOS with clang-1600.0.26.6.\n\ngcc/analyzer/ChangeLog:\n\n\t* engine.cc (impl_region_model_context::on_unexpected_tree_code): Print\n\t\"<unknown>\" when m_file or m_function is NULL.\n\nSigned-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>\n---\n gcc/analyzer/engine.cc | 14 +++++++++-----\n 1 file changed, 9 insertions(+), 5 deletions(-)", "diff": "diff --git a/gcc/analyzer/engine.cc b/gcc/analyzer/engine.cc\nindex a4d870bd3d2..a5ab173ca16 100644\n--- a/gcc/analyzer/engine.cc\n+++ b/gcc/analyzer/engine.cc\n@@ -904,11 +904,15 @@ impl_region_model_context::on_unexpected_tree_code (tree t,\n {\n logger * const logger = get_logger ();\n if (logger)\n- logger->log (\"unhandled tree code: %qs in %qs at %s:%i\",\n-\t\t get_tree_code_name (TREE_CODE (t)),\n-\t\t loc.get_impl_location ().m_function,\n-\t\t loc.get_impl_location ().m_file,\n-\t\t loc.get_impl_location ().m_line);\n+ {\n+ const dump_impl_location_t &impl_loc = loc.get_impl_location ();\n+ const char *unknown = \"<unknown>\";\n+ logger->log (\"unhandled tree code: %qs in %qs at %s:%i\",\n+\t\t get_tree_code_name (TREE_CODE (t)),\n+\t\t impl_loc.m_function ? impl_loc.m_function : unknown,\n+\t\t impl_loc.m_file ? impl_loc.m_file : unknown,\n+\t\t impl_loc.m_line);\n+ }\n if (m_new_state)\n m_new_state->m_valid = false;\n }\n", "prefixes": [ "v2" ] }