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From: Florian Weimer <fw@sourceware.org>
To: glibc-cvs@sourceware.org
Subject: [glibc/release/2.29/master] debug: Mark libSegFault.so as NODELETE
Date: Fri, 21 Jul 2023 14:41:17 +0000 (GMT)	[thread overview]
Message-ID: <20230721144117.D76763858409@sourceware.org> (raw)

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=66b1fe1d4fa67714925ac381c18f8b9cffdb968a

commit 66b1fe1d4fa67714925ac381c18f8b9cffdb968a
Author: Florian Weimer <fweimer@redhat.com>
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 <carlos@redhat.com>
    (cherry picked from commit 23ee92deea4c99d0e6a5f48fa7b942909b123ec5)

Diff:
---
 debug/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/debug/Makefile b/debug/Makefile
index 6351b7e9f4..48d03395a1 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))

                 reply	other threads:[~2023-07-21 14:41 UTC|newest]

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