Re: libc build failure

[Roland McGrath]

I can explain that if and only if you compiled libc without optimization.
The various `extern inline' functions are supposed to have real-function
versions defined for unoptimized callers.  But __hurd_fail was missing.
I've just now fixed that in libc.  For __thread_stack_pointer, there is
no such real-function definition.  I am inclined to just make that one a macro.