compiler warnings found this way.
* libc/stdio/freopen.c (_freopen_r): Fix bug setting _flags.
* libc/include/stdio.h (_rename): Define when building newlib.
* libc/include/sys/signal.h (_kill): Ditto.
* libc/include/sys/stat.h (_mkdir): Ditto.
* libc/include/sys/time.h (_gettimeofday): Ditto.
* libc/include/sys/times.h (_times): Ditto.
* libc/include/sys/wait.h (_wait): Ditto.
* libc/locale/lmessages.c (empty): Don't define for Cygwin.
* libc/locale/lmonetary.c (cnv): Ditto.
* libc/locale/nl_langinfo.c (nl_langinfo): Ditto for variable s.
* libc/posix/collate.c: Throughout cast to avoid compiler warning.
* libc/posix/engine.c (matcher): Initialize dp to avoid compiler
warning.
* libc/posix/glob.c: Disable on Cygwin. Explain why.
* libc/posix/regcomp.c: Fix "uninitialized" compiler warnings.
(dissect): Deliberately silence gcc compiler warning. Add comment to
explain why.
* libc/posix/wordexp.c (wordexp): Remove num_bytes variable since result
is never used.
* libc/posix/popen.c (popen): Ditto for variable last.
* libc/reent/mkdirr.c: Include sys/stat.h.
* libc/reent/renamer.c: Include stdio.h.
* libc/search/hash.c: Throughout use underscored variants of the stat
function family.
(init_hash): Add missing definition for the __USE_INTERNAL_STAT64 case.
* libc/search/hash_bigkey.c (__big_insert): Add parenthesis to avoid
compiler warning.
* libc/search/hash_page.c (overflow_page): Initalize freep to NULL to
avoid compiler warning.
* libc/stdio/asiprintf.c (_asiprintf_r): Cast unsigned char * to char *
to avoid compiler warning.
(asiprintf): Ditto.
* libc/stdio/asprintf.c (_asprintf_r): Ditto.
(asprintf): Ditto.
* libc/stdio/vasiprintf.c (_vasiprintf_r): Ditto.
* libc/stdio/vasprintf.c (_vasprintf_r): Ditto.
* libc/stdio/mktemp.c (_gettemp): Cast to unsigned char in call to
isdigit to avoid compiler warning.
* libc/stdio/vfprintf.c (_VFPRINTF_R): Initialize variables used for
grouping to avoid compiler warning. Only define and set nseps and
nrepeats if they are really used.
* libc/stdio/vfwprintf.c (_VFWPRINTF_R): Ditto. Only define state if
it is really used.
* libc/stdio/vfscanf.c (u_char): Revert to be defined as unsigned char.
(__SVFSCANF_R): Cast fmt in call to __mbtowc.
* libc/stdlib/mbtowc_r.c (JIS_state_table): Disable when building
Cygwin.
(JIS_action_table): Ditto.
* libc/stdlib/wctomb_r.c (__utf8_wctomb): Add parenthesis to avoid
compiler warning.
* libc/string/strcasestr.c: Deliberately silence gcc compiler warning.
Add comment to explain why.
* libc/time/strptime.c (strptime): Cast to unsigned char in calls to
isspace to avoid compiler warning.
* libm/math/e_atan2.c (__ieee754_atan2): Add parenthesis to avoid
compiler warning.
* libm/math/e_exp.c (__ieee754_exp): Initialize k to 0 to avoid
compiler warning. Drop setting it to 0 later.
* libm/math/ef_exp.c (__ieee754_expf): Ditto.
* libm/math/e_pow.c (__ieee754_pow): Add braces to avoid compiler
warning.
* libm/math/ef_pow.c (__ieee754_powf): Ditto.
* libm/math/er_lgamma.c (__ieee754_lgamma_r): Initialize nadj to 0 to
avoid compiler warning.
* libm/math/erf_lgamma.c (__ieee754_lgammaf_r): Ditto.
* libm/math/e_rem_pio2.c (__ieee754_rem_pio2): Ditto for variable z.
* libm/common/sf_round.c (roundf): Remove signbit variable since result
is never used.
* libc/stdio/Makefile.am: Build vfprintf.c and vfscanf.c with
-DSTRING_ONLY defined with and without -DINTEGER_ONLY defined
to build special versions for sprintf/sscanf family functions.
* libc/stdio/Makefile.in: Regenerated.
* libc/stdio/vfprintf.c[STRING_ONLY][INTEGER_ONLY](_VFPRINTF_R):
Redefine to be _svfiprintf_r which is optimized to work with siprintf
family of functions (i.e. no I/O) and does not support floating-point.
[STRING_ONLY][!INTEGER_ONLY](_VFPRINTF_R): Redefine to be
_svfprintf_r which is optimized to work with sprintf family of
functions and not use I/O.
[STRING_ONLY](__sprint_r): New string only version of static function.
designed to work with sprintf family of functions.
* libc/stdio/vfscanf.c[STRING_ONLY][INTEGER_ONLY](_SVFSCANF_R):
Redefine to be _ssvfiscanf_r which is optimized to work with siscanf
family of functions (i.e. no I/O) and no float-point support.
[STRING_ONLY][!INTEGER_ONLY](_SVFSCANF_R): Redefine to be
__ssvfscanf_r which is optimized to work with sscanf family of
functions and does not require I/O functions.
* libc/stdio/asprintf.c: Call _svfprintf_r instead of _vfprintf_r.
* libc/stdio/snprintf.c: Ditto.
* libc/stdio/sprintf.c: Ditto.
* libc/stdio/vasnprintf.c: Ditto.
* libc/stdio/vasprintf.c: Ditto.
* libc/stdio/siprintf.c: Call _svfiprintf_r instead of _vfiprintf_r.
* libc/stdio/sniprintf.c: Ditto.
* libc/stdio/vasiprintf.c: Ditto.
* libc/stdio/vsiprintf.c: Ditto.
* libc/stdio/vsniprintf.c: Ditto.
* libc/stdio/vsprintf.c: Ditto.
* libc/stdio/local.h: Add prototypes for _svfprintf_r, _svfiprintf_r,
_ssvfscanf_r, and _ssvfiscanf_r.
* libc/stdio/sscanf.c: Call _ssvfscanf_r instead of _svfscanf_r.
* libc/stdio/vsscanf.c: Ditto.
* libc/stdio/siscanf.c: Call _ssvfiscanf_r instead of _svfiscanf_r.
* libc/stdio/vsiscanf.c: Ditto.
* libc/stdio/vsprintf.c (vsprintf, _vsprintf_r): Set _file fd to
-1 to be sure it cannot later match a valid file fd causing
isatty() to return 1.
* libc/stdio/asprintf.c (asprintf, _asprintf_r): Ditto.
* libc/stdio/sprintf.c (sprintf, _sprintf_r): Ditto.
* libc/stdio/vasprintf.c (vasprintf, _vasprintf_r): Ditto.
Joel Sherrill
Corinna Vinschen
Jeff Johnston
Eric Blake