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Date : 2024-11-17T13:05:55

doc: Prefer https urls where possible.

* doc/gnulib.texi (POSIXURL): Use https url.
* doc/multithread.texi: Use https instead of http where possible.
* doc/glibc-functions/*.texi: Likewise.
* doc/posix-functions/*.texi: Likewise.
* lib/glthread/lock.c: Likewise.
* lib/hamt.h: Likewise.
* lib/localcharset.c: Likewise.
* lib/pipe2.c: Likewise.
* lib/pipe.c: Likewise.
* lib/sigsegv.c: Likewise.
* lib/sigsegv.in.h: Likewise.
* lib/sm3.c: Likewise.
* lib/sm3.h: Likewise.
* lib/sm3-stream.c: Likewise.
* lib/stackvma.c: Likewise.
* lib/stdio-impl.h: Likewise.
* lib/stdnoreturn.in.h: Likewise.
* m4/getopt.m4: Likewise.
* m4/largefile.m4: Likewise.
* m4/stdalign.m4: Likewise.
* STATUS-libposix: Likewise.
* tests/test-float.c: Likewise.
* tests/test-getopt.h: Likewise.
* tests/test-setenv.c: Likewise.
* tests/test-spawn-pipe-child.c: Likewise.
* tests/test-strerror.c: Likewise.
* tests/test-strerror_r.c: Likewise.
* tests/test-unsetenv.c: Likewise.
* users.txt: Likewise.

doc/posix-headers/stdbit.texi

@node stdbit.h
@section @file{stdbit.h}

POSIX :@* Not in POSIX yet, but we expect it will be.
ISO C23 (latest free draft
@url{https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3220.pdf})
section 7.18.

Gnulib module: stdbit
@mindex stdbit

Portability problems fixed by Gnulib:
@itemize
@item
This header file is missing on many non-C23 platforms:
glibc 2.38, macOS 14, FreeBSD 14.0, NetBSD 10.0, OpenBSD 7.5, AIX 7.3.1, HP-UX 11.31, Solaris 11.4, Cygwin 3.5.3, mingw, MSVC 17, Android 15.
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
On older non-C23 platforms lacking @code{typeof} or equivalent, a call
to @code{stdc_bit_floor} and @code{stdc_bit_ceil} may yield a type
that is wider than its argument.  Although C23 seems to allow this,
it differs from GNU behavior.

@item
On non-C23 platforms, type-generic functions apply portably only to
the standard unsigned integer types specified by C17 or earlier.
@end itemize