From: Florian Weimer <fweimer@redhat.com>
Date: Thu, 20 Jul 2023 16:31:48 +0000 (+0200)
Subject: debug: Mark libSegFault.so as NODELETE
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aef97dc952a6af0cbf4b2408993745fa97d89a2b;p=thirdparty%2Fglibc.git

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 --git a/debug/Makefile b/debug/Makefile
index 3f66666c6c1..60d69397f9e 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))