From a0350c84c15294ff01bde2a233a061c7b23cf4c3 Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Thu, 20 Jul 2023 18:31:48 +0200 Subject: [PATCH] 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) --- 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))