From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2178) id 9D6C73858409; Fri, 21 Jul 2023 14:40:35 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9D6C73858409 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1689950435; bh=pk4VFE5lJXqS78IqK0w9qD4G4AXYwjtgrePZh0SKQUY=; h=From:To:Subject:Date:From; b=dquPOizhzPqqcYxvjMTEx0BjlFBQJJtionf1bFvlNo4LvraszhYlmYmBLSzUQ7KDB bznyC3ERiE7q7yxVERI7jRwA4kePmvPrQ7NtC+zoJjeyEFkqoOyaXtwtbj7WTDwexB 9SpU/ROzkE+m1hvsvxvCREvE++33TjvkNy91SQZU= Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Florian Weimer To: glibc-cvs@sourceware.org Subject: [glibc/release/2.31/master] debug: Mark libSegFault.so as NODELETE X-Act-Checkin: glibc X-Git-Author: Florian Weimer X-Git-Refname: refs/heads/release/2.31/master X-Git-Oldrev: 2d4f26e5cfda682f9ce61444b81533b83f6381af X-Git-Newrev: 1c08c171560c8eb9bb54bc5d45cd49175192315e Message-Id: <20230721144035.9D6C73858409@sourceware.org> Date: Fri, 21 Jul 2023 14:40:35 +0000 (GMT) List-Id: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=1c08c171560c8eb9bb54bc5d45cd49175192315e commit 1c08c171560c8eb9bb54bc5d45cd49175192315e Author: Florian Weimer Date: Thu Jul 20 18:31:48 2023 +0200 debug: Mark libSegFault.so as NODELETE The signal handler installed in the ELF constructor cannot easily be removed again (because the program may have changed handlers in the meantime). Mark the object as NODELETE so that the registered handler function is never unloaded. Reviewed-by: Carlos O'Donell (cherry picked from commit 23ee92deea4c99d0e6a5f48fa7b942909b123ec5) Diff: --- debug/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/debug/Makefile b/debug/Makefile index c62b2154bc..3a6b442238 100644 --- a/debug/Makefile +++ b/debug/Makefile @@ -168,6 +168,8 @@ extra-libs-others = $(extra-libs) libSegFault-routines = segfault libSegFault-inhibit-o = $(filter-out .os,$(object-suffixes)) +# libSegFault.so installs a signal handler in its ELF constructor. +LDFLAGS-SegFault.so = -Wl,--enable-new-dtags,-z,nodelete libpcprofile-routines = pcprofile libpcprofile-inhibit-o = $(filter-out .os,$(object-suffixes))