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authorFlorian Weimer <fweimer@redhat.com>2023-07-20 18:31:48 +0200
committerFlorian Weimer <fweimer@redhat.com>2023-07-21 16:41:28 +0200
commit0fda2a41baf7e978d07322aa278e964f4dce8802 (patch)
tree49f23a56ee64d8839e37278544439cc74fdf19a4
parentc9e58ae23402eb82877de90fd8a18519c086ed87 (diff)
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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)
-rw-r--r--debug/Makefile2
1 files changed, 2 insertions, 0 deletions
diff --git a/debug/Makefile b/debug/Makefile
index 506cebc3c4..8618d577f1 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))