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From: "mark at klomp dot org" <sourceware-bugzilla@sourceware.org>
To: elfutils-devel@sourceware.org
Subject: [Bug general/27366] 0.183: test suite is failing on linking
 dwfl-proc-attach
Date: Sun, 07 Feb 2021 22:33:13 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27366

--- Comment #3 from Mark Wielaard <mark at klomp dot org> ---
I see you are using -flto=3Dauto. Sadly LTO isn't supported at the moment.
Although it would be nice if it didn't totally break with -flto-partition=
=3Dnone.

The problem with lto might be:

/* HACK. This is a simple workaround for a combination of old glibc
   and valgrind. libdw will try to dlopen libdebuginfod this causes
   some unsuppressable memory leak warnings when the process is
   multi-threaded under valgrind because of some bad backtraces.
   So simply override dlopen and always return NULL so libdebuginfod
   (and libcurl) are never loaded.  This test doesn't rely on
   libdebuginfod anyway.  */
void *dlopen (void)
{
  return NULL;
}

Maybe it needs some __attribute__((__used__)) to make sure it is kept aroun=
d?

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