From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail1.windriver.com (mail1.windriver.com [147.11.146.13]) by mail.openembedded.org (Postfix) with ESMTP id 5C1577D48D for ; Tue, 9 Apr 2019 02:32:54 +0000 (UTC) Received: from ALA-HCA.corp.ad.wrs.com ([147.11.189.40]) by mail1.windriver.com (8.15.2/8.15.1) with ESMTPS id x392Wqw0005878 (version=TLSv1 cipher=AES128-SHA bits=128 verify=FAIL); Mon, 8 Apr 2019 19:32:52 -0700 (PDT) Received: from pek-lpg-core2.corp.ad.wrs.com (128.224.153.41) by ALA-HCA.corp.ad.wrs.com (147.11.189.40) with Microsoft SMTP Server id 14.3.439.0; Mon, 8 Apr 2019 19:32:52 -0700 From: To: , , Date: Tue, 9 Apr 2019 10:32:50 +0800 Message-ID: <1554777170-58044-1-git-send-email-mingli.yu@windriver.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: MIME-Version: 1.0 Subject: [PATCH v3] gcc-sanitizers: fix -Werror=maybe-uninitialized issue X-BeenThere: openembedded-core@lists.openembedded.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Patches and discussions about the oe-core layer List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Apr 2019 02:32:54 -0000 Content-Type: text/plain From: Mingli Yu When DEBUG_BUILD = "1" added in local.conf, there comes below build error when "bitbake gcc-sanitizers": | ./../../../../../../../../work-shared/gcc-8.3.0-r0/gcc-8.3.0/libsanitizer/libbacktrace/../../libbacktrace/elf.c: In function 'elf_is_symlink': | ../../../../../../../../../work-shared/gcc-8.3.0-r0/gcc-8.3.0/libsanitizer/libbacktrace/../../libbacktrace/elf.c:772:21: error: 'st.st_mode' may be used uninitialized in this function [-Werror=maybe-uninitialized] | return S_ISLNK (st.st_mode); Per https://gcc.gnu.org/ml/gcc-patches/2019-04/msg00315.html, the gcc upstream thinks the warning is a false positive and suggests to use -O2 rather than -Og or -O1 when compiling that file, so pass -Wno-error to compiler when -Og is used to silence the error. Signed-off-by: Mingli Yu --- meta/recipes-devtools/gcc/gcc-sanitizers.inc | 3 +++ 1 file changed, 3 insertions(+) diff --git a/meta/recipes-devtools/gcc/gcc-sanitizers.inc b/meta/recipes-devtools/gcc/gcc-sanitizers.inc index e5e8452..8b1d1c9 100644 --- a/meta/recipes-devtools/gcc/gcc-sanitizers.inc +++ b/meta/recipes-devtools/gcc/gcc-sanitizers.inc @@ -45,6 +45,9 @@ INHIBIT_DEFAULT_DEPS = "1" ALLOW_EMPTY_${PN} = "1" DEPENDS = "gcc-runtime virtual/${TARGET_PREFIX}gcc" +# used to fix ../../../../../../../../../work-shared/gcc-8.3.0-r0/gcc-8.3.0/libsanitizer/libbacktrace/../../libbacktrace/elf.c:772:21: error: 'st.st_mode' may be used uninitialized in this function [-Werror=maybe-uninitialized] +DEBUG_OPTIMIZATION_append = " -Wno-error" + BBCLASSEXTEND = "nativesdk" PACKAGES = "${PN} ${PN}-dbg" -- 2.7.4