C

Ha sido agregada la función contenedora getcpu, la cual devuelve la CPU y el nodo NUMA utilizados actualmente.

Optimizados los exp, exp2, log, log2, pow, sinf, cosf, sincosf y tanf genéricos.

The reallocarray function is now declared under _DEFAULT_SOURCE, not just for _GNU_SOURCE, to match BSD environments.

The popen and system do not run atfork handlers anymore.

strftime’s default formatting of a locale’s alternative year (%Ey`) has been changed to zero-pad the year to a minimum of two digits, like %y.

As a GNU extension, the _ and - flags can now be applied to %EY to control how the year number is formatted; they have the same effect that they would on %Ey.

The glibc.tune tunable namespace has been renamed to glibc.cpu and the tunable glibc.tune.cpu has been renamed to glibc.cpu.name.

An archaic GNU extension to scanf, under which %as, %aS, and %a[…​] meant to scan a string and allocate space for it with malloc, is now restricted to programs compiled in C89 or C++98 mode with _GNU_SOURCE defined.

CVE-2018-19591

CVE-2019-6488

CVE-2016-10739