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NEWS: Deprecate weak libpthread symbols for single-threaded checks

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Recommend the new __libc_single_thread variable instead.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Florian Weimer 2020-07-24 16:50:38 +02:00
parent 20fb7452c0
commit 89c255294a
1 changed files with 8 additions and 0 deletions
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NEWS
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@ -134,6 +134,14 @@ Deprecated and removed features, and other changes affecting compatibility:
or contents might be overwritten on subsequent calls in the same thread or
if the thread is terminated. It makes strerror MT-safe.
* Using weak references to libpthread functions such as pthread_create
or pthread_key_create to detect the singled-threaded nature of a
program is an obsolescent feature. Future versions of glibc will
define pthread_create within libc.so.6 itself, so such checks will
always flag the program as multi-threaded. Applications should check
the __libc_single_threaded variable declared in
<sys/single_threaded.h> instead.
* The "files" NSS module no longer supports the "key" database (used for
secure RPC). The contents of the /etc/publickey file will be ignored,
regardless of the settings in /etc/nsswitch.conf. (This method of