This problem is a side effect of commit 251a3c19cb "sleep: employ
__USE_EXTERN_INLINES (with necessary fixes)" due to dropped "extern"
clause. See comment for libc/sysdeps/linux/common/bits/sigset.h:
+ /* dropped extern below: otherwise every module with __USE_EXTERN_INLINES
+ * will have its own copy of out-of line function emitted. */
I have to find more smart solution to allow use of
__USE_EXTERN_INLINES outside of libc itself.
Regards,
Leonid