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[[!tag open_issue_glibc open_issue_libpthread]]
This basically means to get rid of `sysdeps/mach/hurd/bits/libc-tsd.h` (and
thus the `_HURD_THREADVAR_*`/`_hurd_threadvar_location` interface), and
directly use `__thread` instead.
IRC, freenode, #hurd, 2011-10-23:
<tschwinge> youpi: If we want to replace threadvars with TLS, there is one
problem: the threadvars interface is publically exported:
/usr/include/hurd/threadvar.h.
<tschwinge> youpi: But I am somewhat inclined to say that the only user of
this is libthreads/libpthread. Do you think differently?
<youpi> tschwinge: that's very probable
<youpi> so I think we can just drop it
<youpi> (people should use TLS anyway)
[[libpthread_set_stack_size]].
After this has been done, probably the whole `__libc_tsd_*` stuff can be
dropped altogether, and `__thread` directly be used in glibc.
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