[Bug nptl/21254] valgrind warnings for TLS initialization in statically linked binaries

["mjw at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=21254

Mark Wielaard <mjw at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |mjw at redhat dot com

--- Comment #2 from Mark Wielaard <mjw at redhat dot com> ---
Try without -static. With -static you'll get:

==16205== Conditional jump or move depends on uninitialised value(s)
==16205==    at 0x435B16: __linkin_atfork (in /tmp/tp)
==16205==    by 0x420273: ptmalloc_init.part.8 (in /tmp/tp)
==16205==    by 0x4205FD: malloc_hook_ini (in /tmp/tp)
==16205==    by 0x47CC0D: _dl_important_hwcaps (in /tmp/tp)
==16205==    by 0x478340: _dl_init_paths (in /tmp/tp)
==16205==    by 0x43708B: _dl_non_dynamic_init (in /tmp/tp)
==16205==    by 0x437F23: __libc_init_first (in /tmp/tp)
==16205==    by 0x41044D: (below main) (in /tmp/tp)
==16205==  Uninitialised value was created
==16205==    at 0x472D1C: brk (in /tmp/tp)
==16205==    by 0x431FA4: sbrk (in /tmp/tp)
==16205==    by 0x4109F3: __libc_setup_tls (in /tmp/tp)
==16205==    by 0x401D9A: __pthread_initialize_minimal (in /tmp/tp)
==16205==    by 0x410405: (below main) (in /tmp/tp)

Note that valgrind assumes memory returned by brk is not initialized.

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