From nobody Thu Jun 10 17:07:01 2021 X-Original-To: toolchain@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 37F825D5E24 for ; Thu, 10 Jun 2021 17:07:02 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4G19Pf11zrz3ppF for ; Thu, 10 Jun 2021 17:07:02 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 0BBF013171 for ; Thu, 10 Jun 2021 17:07:02 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 15AH71gO068023 for ; Thu, 10 Jun 2021 17:07:01 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 15AH71NJ068022 for toolchain@FreeBSD.org; Thu, 10 Jun 2021 17:07:01 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: toolchain@FreeBSD.org Subject: [Bug 256524] Does FreeBSD 12.2-RELEASE amd64 support -fsanitize=leak? Date: Thu, 10 Jun 2021 17:07:01 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bin X-Bugzilla-Version: 12.2-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: dim@FreeBSD.org X-Bugzilla-Status: Closed X-Bugzilla-Resolution: Not A Bug X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: toolchain@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_status cc resolution Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Maintenance List-Archive: https://lists.freebsd.org/archives/freebsd-toolchain List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-toolchain@freebsd.org X-BeenThere: freebsd-toolchain@freebsd.org MIME-Version: 1.0 X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D256524 Dimitry Andric changed: What |Removed |Added ---------------------------------------------------------------------------- Status|New |Closed CC| |dim@FreeBSD.org Resolution|--- |Not A Bug --- Comment #1 from Dimitry Andric --- Even though the code in contrib/llvm-project/clang/lib/Driver/ToolChains/FreeBSD.cpp appears to imp= ly that LeakSanitizer is supported, the required libraries in compiler-rt do n= ot. E.g. contrib/llvm-project/compiler-rt/lib/lsan/lsan_common.h has: // LeakSanitizer relies on some Glibc's internals (e.g. TLS machinery) on Linux. // Also, LSan doesn't like 32 bit architectures // because of "small" (4 bytes) pointer size that leads to high false negat= ive // ratio on large leaks. But we still want to have it for some 32 bit arches // (e.g. x86), see https://github.com/google/sanitizers/issues/403. // To enable LeakSanitizer on a new architecture, one needs to implement the // internal_clone function as well as (probably) adjust the TLS machinery f= or // the new architecture inside the sanitizer library. #if (SANITIZER_LINUX && !SANITIZER_ANDROID || SANITIZER_MAC) && \ (SANITIZER_WORDSIZE =3D=3D 64) && \ (defined(__x86_64__) || defined(__mips64) || defined(__aarch64__) || \ defined(__powerpc64__)) #define CAN_SANITIZE_LEAKS 1 #elif defined(__i386__) && \ (SANITIZER_LINUX && !SANITIZER_ANDROID || SANITIZER_MAC) #define CAN_SANITIZE_LEAKS 1 #elif defined(__arm__) && \ SANITIZER_LINUX && !SANITIZER_ANDROID #define CAN_SANITIZE_LEAKS 1 #elif SANITIZER_NETBSD #define CAN_SANITIZE_LEAKS 1 #else #define CAN_SANITIZE_LEAKS 0 #endif Somebody needs to step up and implement the required bits upstream, then we= can import it into FreeBSD. But for now, we don't have LeakSanitizer. --=20 You are receiving this mail because: You are the assignee for the bug.=