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Mon, 20 Jan 2025 17:52:17 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 50KHqHIe013321 for bugs@FreeBSD.org; Mon, 20 Jan 2025 17:52:17 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: bugs@FreeBSD.org Subject: [Bug 235751] Failure to init TLS variables with func ptr inside shared lib Date: Mon, 20 Jan 2025 17:52:17 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 14.2-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: dclarke@blastwave.org X-Bugzilla-Status: Closed X-Bugzilla-Resolution: Not A Bug X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_status resolution Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235751 Dennis Clarke changed: What |Removed |Added ---------------------------------------------------------------------------- Status|New |Closed Resolution|--- |Not A Bug --- Comment #11 from Dennis Clarke --- This is entirely PEBKAC given that the second command issued to LLVM/Clang also specified -shared and that is wrong. titan$ uname -apKU=20 FreeBSD titan 15.0-CURRENT FreeBSD 15.0-CURRENT #5 main-n274856-488660360a7= 1: Sat Jan 18 17:03:26 GMT 2025=20=20=20=20 root@titan:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG amd64 amd64 150= 0030 1500030 titan$ echo $CC /usr/bin/cc titan$ $CC --version=20 FreeBSD clang version 19.1.7 (https://github.com/llvm/llvm-project.git llvmorg-19.1.7-0-gcd708029e0b2) Target: x86_64-unknown-freebsd15.0 Thread model: posix InstalledDir: /usr/bin Build config: +assertions titan$ $CC -std=3Diso9899:1999 -pedantic -pedantic-errors -m64 -g -O0 -fno-builtin -shared -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=3D64 -D_XOPEN_SOURCE=3D600 -D_REENTRANT -o t1.so -fPIC t1.c * * * careful here to NOT use -shared * * * titan$ $CC -std=3Diso9899:1999 -pedantic -pedantic-errors -m64 -g -O0 -fno-builtin -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=3D64 -D_XOPEN_SOURCE= =3D600 -D_REENTRANT -o foo t2.c t1.so titan$ LD_LIBRARY_PATH=3D`pwd` ./foo titan$ echo $? 42 titan$=20 Well lo and behold. So this is a user error in that the -shared should NOT be there on the compile and link line :=20 titan$ $CC -std=3Diso9899:1999 -pedantic -pedantic-errors -m64 -g -O0 -fno-builtin -shared -D_LARGEFILE64_SOUR CE -D_FILE_OFFSET_BITS=3D64 -D_XOPEN_SOURCE=3D600 -D_REENTRANT -o foo t2.c = t1.so titan$ file foo foo: ELF 64-bit LSB shared object, x86-64, version 1 (FreeBSD), dynamically linked, for FreeBSD 15.0 (1500030), with debug_info, not stripped titan$ LD_LIBRARY_PATH=3D`pwd` ./foo Segmentation fault (core dumped) titan$=20 Closing this as a dumb user error. --=20 You are receiving this mail because: You are the assignee for the bug.=