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debug: Mark libSegFault.so as NODELETE

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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 23ee92deea)
This commit is contained in:
Florian Weimer 2023-07-20 18:31:48 +02:00
parent eed27b3e46
commit aef97dc952
1 changed files with 2 additions and 0 deletions
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debug/Makefile
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@ -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))