Restrict testing of some extended format/parse specifiers (e.g.,
%k, %l, and %P) to platforms that define __GLIBC__. This means
the tests can run with alternative Linux C run-time libraries,
like https://musl.libc.org/, that do not support those extensions.
Restrict testing of some extended format/parse specifiers (e.g., %k, %l, and %P) to platforms that define
__GLIBC__
. This means the tests can run with alternative Linux C run-time libraries, like https://musl.libc.org/, that do not support those extensions.This change is