__readfn and __writefn parameter to match new definition of
FILE's _read and _write methods.
(_funopen_r): Ditto.
(funopen): Ditto.
(_funopen_r): Ditto.
* libc/include/sys/config.h (_READ_WRITE_BUFSIZE_TYPE) Define
as type int if not already defined. Add comment to explain.
* libc/include/sys/reent.h: Include stddef.h.
(struct __sFILE): Change type of last parameter in declaration
of _read and _write methods to _READ_WRITE_BUFSIZE_TYPE.
(struct __sFILE64): Ditto.
* libc/stdio/local.h (__sread): Declare with last parameter set
to _READ_WRITE_BUFSIZE_TYPE.
(__seofread): Ditto.
(__swrite): Ditto.
(__swrite64): Ditto.
* libc/stdio/fvwrite.c (__sfvwrite_r): Change type of local
variables w and s to _READ_WRITE_RETURN_TYPE.
* libc/stdio/fflush.c (__sflush_r): Change type of local variables
n and t to _READ_WRITE_BUFSIZE_TYPE and _READ_WRITE_RETURN_TYPE.
Add local variables flags to keep _flags value.
* libc/stdio/fmemopen.c (fmemreader): Align to above change.
(fmemwriter): Ditto.
* libc/stdio/fopencookie.c (fcreader): Ditto.
(fcwriter): Ditto.
* libc/stdio/funopen.c (funread): Ditto.
(funwrite): Ditto.
(funreader): Ditto.
(funwriter): Ditto.
* libc/stdio/open_memstream.c (memwriter): Ditto.
* libc/stdio/stdio.c (__sread): Ditto.
(__seofread): Ditto.
(__swrite): Ditto.
* libc/stdio64/stdio64.c (__swrite64): Ditto.
secure stream related critical section against thread cancellation.
(_newlib_flockfile_exit): Ditto.
(_newlib_sfp_lock_end): Ditto.
(_newlib_sfp_lock_start): Ditto for the list of streams.
(_newlib_sfp_lock_exit): Ditto.
(_newlib_sfp_lock_end): Ditto.
Use aforementioned macros in place of _flockfile/_funlockfile
and __sfp_lock_acquire/__sfp_lock_release throughout the code.
* libc/stdio/fclose.c: Explicitely disable and re-enable thread
cancellation. Explain why.
* libc/stdio/freopen.c: Ditto.
* libc/stdio64/freopen64.c: Ditto.
* libc/stdio/open_memstream.c (internal_open_memstream_r): Fix max
buffer size to be in wchar_t units if wide == 1 is passed in. In
this case, also initialize the first character of the buffer to be
wide char null.
(_open_wmemstream_r): Cast buf to be (char **) to avoid warning.
* libc/stdlib/mbtowc_r.c (_mbtowc_r): Change all occurences of
incrementing the size_t value n to first check that n is not already
size_t -1. Fix some compiler warnings.
* libc/stdlib/wcstod.c: Add includes for <wctype.h> and <math.h>.
(struct memstream): Add wide element.
Change saved to a union to take char and wchar_t values.
(memwriter): Accommodate wide-oriented oeprations.
(memseeker): Ditto.
(memseeker64): Ditto.
(memcloser): Ditto.
(internal_open_memstream_r): New static function. Take functionality
from former _open_memstream_r and handle additional "wide" parameter.
(_open_memstream_r): Just call internal_open_memstream_r with wide==-1
from here.
(_open_wmemstream_r): New function.
(open_wmemstream): Ditto.
* libc/include/wchar.h (open_wmemstream): Declare.
(_open_wmemstream_r): Declare.
Yaakov Selkowitz
Corinna Vinschen
Jeff Johnston
Kevin Buettner
Eric Blake