+2019-01-22 Keith Marshall <keith@users.osdn.me>
+
+ Incorporate user-customized <features.h> configuration.
+
+ * include/_mingw.h: Include <features.h>, or...
+ [_MINGW_FEATURES_HEADER]: ...nominated alternative header.
+ [!defined __MINGW_FEATURES__]: Provide fall-back definition.
+ (__MINGW_FEATURES_BEGIN__, __MINGW_FEATURES_ENABLE__)
+ (__MINGW_FEATURES_IGNORE__, __MINGW_FEATURES_UNSET__)
+ (__MINGW_FEATURES_END__): New macros; define them.
+
+ * tests/Makefile.in (install-mingwrt): Create <features.h> stub; this
+ is an empty file, yielding the default fall-back configuration.
+
+2019-01-21 Keith Marshall <keith@users.osdn.me>
+
+ Handle another GCC compile-time warning.
+
+ * mingwex/memalign.c (is_power_of_two): Use in-line expansion...
+ (memalign_is_power_of_two): ...of this new function; this is required
+ to avoid -Wsequence-point warnings, which may arise when testing the
+ result of an assignment expression passed as the macro argument.
+
+2019-01-11 Keith Marshall <keith@users.osdn.me>
+
+ Fix a mkstemp() file name generator defect.
+
+ * mingwex/cryptnam.c (crypto_random_filename_char): Revert 2018-09-06
+ change; argument type must be unsigned char *, to avoid math errors.
+ (__mingw_crypto_tmpname): Use explicit casts to resolve type conflicts.
+
+2019-01-11 Keith Marshall <keith@users.osdn.me>
+
+ Fix a <stdio.h> typedef omission.
+
+ * include/stdio.h: Adjust comment formatting.
+ (__need___off64_t) [__MSVCRT__]: Require it, but remove...
+ [!(__STRICT_ANSI__||__NO_MINGW_LFS)]: ...this exclusion filter.
+ [!__MSVCRT__] (__need___off32_t): Require this alternative.
+ (sys/types.h): Include unconditionally.
+
+2018-12-23 Keith Marshall <keith@users.osdn.me>
+
+ Prepare and publish MinGW.org WSL-5.2 release.
+
+ * All files (wsl-5.2-release): Tag assigned.
+
+2018-12-22 Keith Marshall <keith@users.osdn.me>
+
+ Correct an optional DLL installation and packaging defect.
+
+ * Makefile.in (optional_dll): New function macro; define it, and...
+ (MAP_LIBMINGWEX_A_DLLVERSION): ...wrap this, replacing all usage of...
+ (optional_dll_version, optional_dll_package): ...these; delete them,
+ together with all dependent references.
+
+2018-12-22 Keith Marshall <keith@users.osdn.me>
+
+ Update ANSI stdio feature test to accommodate ISO-C11.
+
+ * include/_mingw.h.in (__USE_MINGW_ANSI_STDIO): Add a deprecation
+ warning, for ill-advised direct definition in user code; include...
+ (_ISOC11_SOURCE): ...this new user defined feature test macro as a
+ further indirect enabling condition.
+
+2018-12-20 Keith Marshall <keith@users.osdn.me>
+
+ Implement test suite for aligned heap management API.
+
+ * tests/testsuite.at.in: Include...
+ * tests/memalign.at: ...this new file; it replaces...
+ * mingwex/tst-aligned-malloc.c: ...this; delete it.
+
+2018-12-20 Keith Marshall <keith@users.osdn.me>
+
+ Reimplement aligned heap management API.
+
+ * mingwex/mingw-aligned-malloc.c: Delete it; it is replaced by...
+ * mingwex/memalign.c: ...this new file; it reimplements...
+ (__mingw_aligned_offset_malloc, __mingw_aligned_offset_realloc)
+ (__mingw_aligned_free): ...each of these public API functions; also...
+ (__mingw_realloc, __mingw_free): ...adds these new public functions,...
+ (__mingw_memalign_base, __mingw_memalign_realloc): ...these private,
+ but globally exposed, supporting functions, and additionally...
+ (__mingw_memalign_lwm): ...this global, private use, variable.
+
+ * include/stdlib.h (__mingw_realloc, __mingw_free): Declare prototypes.
+
+ * include/malloc.h (__mingw_aligned_malloc, __mingw_aligned_realloc):
+ Implement them in-line; export them, via __LIBIMPL__, to libmingwex.a
+ (_aligned_malloc, __mingw_aligned_malloc, _aligned_offset_malloc)
+ (__mingw_aligned_offset_malloc): Add __MINGW_ATTRIB_MALLOC attribute.
+ [__MSVCRT_VERSION__ < __MSVCR70_DLL] (_aligned_malloc, _aligned_free)
+ (_aligned_realloc, _aligned_offset_malloc, _aligned_offset_realloc):
+ Implement them in-line, as wrappers around their MinGW alternatives;
+ export them, via __LIBIMPL__, to new library, libmemalign.a
+
+ * Makefile.in (LIBMINGWEX_MEMALIGN): New macro; define it; derive...
+ (LIBMINGWEX_MEMALIGN_OBJECTS): ...this macro; add compilation rule.
+ (libmingwex.a): Add $LIBMINGWEX_MEMALIGN_OBJECTS; they replace...
+ (mingw-aligned-malloc.$OBJEXT): ...this; remove dependency.
+ (all-mingwrt-libs, install-mingwrt-libs): Add libmemalign.a
+ (msvcrt_repl_funcs): Add alias references for...
+ (free, realloc): ...these.
+
+2018-12-04 Keith Marshall <keith@users.osdn.me>
+
+ Reimplement Win9x specific fseek()/fwrite() redirector.
+
+ * include/stdio.h [__USE_MINGW_FSEEK]: Deprecate support for direct
+ user definition; deduce it, as an internal private definition, from...
+ [_WIN32_WINDOWS]: ...this, when appropriately defined for Win9x.
+ [__USE_MINGW_FSEEK] (__mingw_fseek): Declare new prototype; map it as
+ multiple __CRT_ALIAS inline function overrides for each of...
+ (fseek, _fseeki64, fseeko64): ...these.
+ [__USE_MINGW_FSEEK] (__mingw_fwrite): Likewise, overriding...
+ (fwrite): ...this.
+ (__mingw_fseeko64): Delete all references; it is no longer provided,
+ nor required.
+
+ * mingwex/stdio/fwrite.c: New file; it reimplements the Win9x
+ fseek()/fwrite() function redirector interface, and thus replaces...
+ * mingex/ming-fseek.c: ...this; delete it.
+
+ * Makefile.in (libmingwex.a): Remove dependency on...
+ (mingw-fseek.$OBJEXT): ...this object module; replace it with...
+ (fwrite.$OBJEXT): ...this alternative dependency.
+
+2018-12-04 Keith Marshall <keith@users.osdn.me>
+
+ Implement POSIX.1-1996 linked-list queue management API.
+
+ * mingwex/insque.c mingwex/remque.c: New files; they implement the
+ POSIX.1-1996 insque(), and remque() functions, respectively.
+
+ * include/search.h (insque, remque): Declare function prototypes.
+
+ * Makefile.in (libmingwex.a): Add dependencies on...
+ (insque.$OBJEXT, remque.$OBJEXT): ...these.
+
+2018-11-25 Keith Marshall <keith@users.osdn.me>
+
+ Emulate _fseeki64()/_ftelli64() API on legacy platforms.
+
+ * mingwex/stdio/fseeki64.c: New file; it implements...
+ (__mingw_fseeki64, fseeko64): ...both of these functions, avoiding any
+ dependency on undocumented internal implementation details of...
+ (fpos_t): ...this opaque data type, and replacing...
+ * mingwex/stdio/fseeko64.c: ...this; delete it.
+
+ * mingwex/stdio/ftelli64.c: New file; it implements...
+ (_ftelli64, ftello64): ...both of these, again avoiding any dependency
+ on undocumented internal implementation details of...
+ (fpos_t): ...this opaque data type.
+
+ * include/stdio.h (fpos_t): Make it more effectively opaque.
+ (__mingw_fseeki64, __mingw_ftelli64): Declare them for legacy use.
+ [_WIN32_WINNT < VISTA && __MSVCRT_VERSION__ < MSVCR80_DLL] (_fseeki64)
+ (_ftelli64): Map inline emulations, to "__mingw" prefixed names.
+ (ftello64): Remove inline implementation.
+
+ * Makefile.in (libmingwex.a): Add references to...
+ (fseeki64.$OBJEXT, ftelli64.$OBJEXT): these; remove reference to...
+ (fseeko64.$OBJEXT): ...this.
+
+2018-10-21 Keith Marshall <keith@users.osdn.me>
+
+ Update <conio.h> and <wchar.h> header files.
+
+ * include/conio.h: Tidy layout; assert copyright.
+ [_CONIO_H_]: Rename multiple inclusion guard macro, to conform to...
+ [_CONIO_H]: ...this preferred convention; do not define when...
+ [__WCHAR_H_SOURCED__]: ...this selective inclusion condition applies.
+ [__need_wint_t, __need_wchar_t]: Define them; include <stddef.h>...
+ (wint_t, wchar_t): ...for these corresponding data type definitions.
+ [_WIN32_WINNT >= WINXP || __MSVCRT_VERSION__ >= __MSVCR70_DLL]
+ (_getwch, _getwche, _ungetwch, _putwch): Declare function prototypes.
+ [__MSVCRT_VERSION__>=__MSVCR80_DLL] (_getch_nolock, _getche_nolock)
+ (_ungetch_nolock, _putch_nolock, _getwch_nolock, _getwche_nolock)
+ (_ungetwch_nolock, _putwch_nolock): Likewise.
+ [_BEGIN_C_DECLS, _END_C_DECLS]: Use them.
+
+ * include/wchar.h: Selectively include <conio.h>, for...
+ (_getwch, _getwche, _ungetwch): ...these function prototypes, and...
+ [__MSVCRT_VERSION__>=__MSCVCR80_DLL] (_getwch_nolock)
+ (_getwche_nolock, _ungetwch_nolock): ...these.
+
+2018-10-18 Keith Marshall <keith@users.osdn.me>
+
+ Map compile-time constant references for POSIX clocks.
+
+ * include/time.h (CLOCK_REALTIME, CLOCK_MONOTONIC): Redefine, using...
+ (__MINGW_POSIX_CLOCKAPI): ...this new macro; it converts clock indices
+ to odd-valued compile-time constant pseudo-pointers, (distinguishable
+ from real pointers which are always even-valued), which may be passed
+ as clockid_t references in POSIX clock API function calls.
+
+ * mingwex/clockapi.h (struct __clockid__): Specify 4-byte alignment.
+ (__clock_api_is_valid): Change return type to "clockid_t".
+
+ * mingwex/clockapi.c (__clock_api_is_valid): Return an even-valued,
+ non-NULL, "clockid_t" reference pointer, or "NULL" if invalid; use...
+ (clock_reference): ...this new static inline function, to convert...
+ (CLOCK_REALTIME, CLOCK_MONOTONIC): ...these odd-valued pseudo-pointers
+ to their actual run-time pointer equivalents; delete their physical
+ initializations, which have now become invalid.
+
+ * mingwex/clockres.c (clock_getres)
+ * mingwex/clocktime.c (clock_gettime)
+ * mingwex/clockset.c (clock_settime): Update the "clockid_t" argument
+ to match the real pointer returned by __clock_api_is_valid()
+
+2018-10-08 Keith Marshall <keith@users.osdn.me>
+
+ Suppress autoconf detection of _aligned_malloc functions.
+
+ * msvcrt-xref/msvcrt.def.in (_aligned_malloc, _aligned_free)
+ (_aligned_offset_malloc, _aligned_realloc, _aligned_offset_realloc):
+ Mark as requiring dlsym() lookup, when linking with MSVCRT.DLL
+
+2018-10-07 Keith Marshall <keith@users.osdn.me>
+
+ Make alloca() API both GNU and Microsoft compatible.
+
+ * include/malloc.h: Tidy layout; assert copyright.
+ (_MALLOC_H_): Rename guard macro, for conformance with...
+ (_MALLOC_H): ...this preferred guard macro naming convention.
+ (GCC system_header): Add pragma, declaring it as such.
+ [__MSVCRT_VERSION__ >= 0x0700]: Express symbolically, guarding...
+ (_aligned_malloc, _aligned_offset_malloc)
+ (_aligned_realloc, _aligned_offset_realloc)
+ (_aligned_recalloc, _aligned_offset_recalloc): ...these...
+ [__MSVCRT_VERSION__>=__MSVCR70_DLL]: ...thus.
+ [_BEGIN_C_DECLS, _END_C_DECLS]: Use them.
+ (alloca, _alloca): Factor them out, then include from...
+ * include/alloca.h: ...this new header file; it reimplements...
+ (alloca, _alloca): ...these, such that they remain Microsoft
+ compatible, while adding GNU conformity, either explicitly when
+ included by user code, or conditionally when included by...
+ * include/stdlib.h [!__STRICT_ANSI__]: ...this.
+
+ * tests/headers.at: Regenerated by "make check".
+ (MINGWRT_AT_PACKAGE_HEADERS): Add alloca.h
+
+2018-09-06 Keith Marshall <keith@users.osdn.me>
+
+ Avoid unwanted GCC warning diagnostic messages.
+
+ * Makefile.in (libm_dummy.c): Remove "static" qualifier from...
+ (__mingw_libm_dummy): ...this variable; it caused "-Wunused-variable"
+ warning diagnostics, when compiled with "-Wall".
+
+ * main.c (WinMain): Remove unnecessary argument names from prototype.
+ (main): Make its argument list conform to convention, otherwise it
+ causes a "-Wmain" warning diagnostic when compiled with "-Wall".
+
+ * mingwex/clocktime.c (clock_gettime) [clock_id-type]
+ * mingwex/clockapi.c (clock_api_getres_interval) [clock_api->type]:
+ Ensure that switches include default cases; this avoids a "-Wswitch"
+ warning diagnostic message, in each case, when compiled with "-Wall".
+
+ * mingwex/cryptnam.c (crypto_random_filename_char): Remove "unsigned"
+ qualifier from both argument and return type; this avoids an argument
+ type mismatch, raising a "-Wpointer-sign" warning when called from...
+ (__mingw_crypto_tmpname): ...here, and compiled with "-Wall".
+
+ * mingwex/imaxdiv.c: Tidy layout; assert copyright.
+ (lldiv): Correct return type; explicitly disable "-Wattribute-alias"
+ diagnostic messages, under GCC pragma control.
+
+ * mingwex/ofmt.c [__crtofmt__] (__mingw_set_output_format_fallback)
+ [__crtnfmt__] (__mingw_get_printf_count_output_fallback): Likewise,
+ disable "-Wattribute-alias" diagnostics.
+
+ * mingwrt/mingwex/stdio/pformat.c (__pformat_ignore_flags): Adjust
+ layout, to avoid a "-Wmisleading-indentation" warning diagnostic.
+ (__pformat_argmap) [length]: Add a no-op default case, to avoid a
+ "-Wswitch" warning diagnostic message.
+
+ * mingwrt/profile/mcount.c: Explicitly disable "-Wframe-address"
+ diagnostics, under GCC pragma control, to avoid warnings relating...
+ (__builtin_return_address): ...this, when called from...
+ (mcount): ...here.
+
+ * mingwrt/setargv.c (__mingw_setargv): Insert parentheses, as advised,
+ to eliminate "-Wparentheses" diagnostic messages.
+
+2018-09-03 Keith Marshall <keith@users.osdn.me>
+
+ Prepare and publish MinGW.org WSL-5.1.1 release.
+
+ * All files (wsl-5.1.1-release): Tag assigned.
+
+2018-09-02 Keith Marshall <keith@users.osdn.me>
+
+ Make clockapi symbolic constants #ifdef detectable.
+
+ * mingwex/clockapi.c (CLOCK_REALTIME, CLOCK_MONOTONIC): Add "const".
+ * include/time.h (CLOCK_REALTIME, CLOCK_MONOTONIC): Likewise; also
+ define both as self-referencing macros.
+
+2018-08-26 Keith Marshall <keith@users.osdn.me>
+
+ Circumvent <process.h> testsuite failure with GCC-7+.
+
+ * include/process.h (execv, execve, execvp): Subject declarations to
+ #pragma GCC diagnostic ignored "-Wbuiltin-declaration-mismatch", if...
+ [__cplusplus && __IN_MINGWRT_TESTSUITE__ && __GNUC__ >= 7]: ...this.
+
+2018-04-16 Keith Marshall <keith@users.osdn.me>
+
+ Suppress glob-brace expansion within quoted arguments.
+
+ * setargv.c (__mingw32_setargv) [quoted]: Handle '{', ',', and '}'
+ in the same manner as '*', and '?'.
+
+2018-04-16 Keith Marshall <keith@users.osdn.me>
+
+ Suppress glob-brace expansion of single item lists.
+
+ * mingwex/glob.c (glob_match) [c == '{']: Look-ahead to matching '}';
+ ignore intervening nested '{' ... '}' expression groups, and suppress
+ special interpretation of '{' if '\0' encountered before '}' at outer
+ nesting level, or if no unescaped ',' found within outer expression.
+
+2018-02-26 Keith Marshall <keith@users.osdn.me>
+
+ Prepare and publish MinGW.org WSL-5.1 release.
+
+ * All files (wsl-5.1-release): Tag assigned.
+
+2018-02-22 Keith Marshall <keith@users.osdn.me>
+
+ Correct <sys/timeb.h> 32-bit vs. 64-bit time_t anomalies.
+
+ * include/sys/timeb.h: Assert copyright; tidy layout.
+ (_TIMEB_H_): Original multiple inclusion guard macro; rename it...
+ (_SYS_TIMEB_H): ...conforming to this preferred naming convention.
+ (GCC system_header): Add pragma, asserting it as such a header.
+ (__need_time_t): Define for selective <sys/types.h> inclusion.
+ (_BEGIN_C_DECLS, _END_C_DECLS): Use them as appropriate.
+ (pragma pack): Push to pack all structs with 2-byte alignment.
+ (struct timeb): Mark as deprecated, from POSIX.1-2001 onwards.
+ (ftime): Likewise, mark as deprecated; always emulate it by in-line
+ redirection to _ftime(), however this may be implemented.
+ (struct __timeb32): Make its definition unconditionally visible.
+ (_ftime32) [__MSVCRT_VERSION__ >= __MSVCR80_DLL]: Declare prototype.
+ (_ftime32) [_WIN64 || _WIN32_WINNT >= _WIN32_WINNT_VISTA]: Likewise,
+ otherwise emulate it by in-line redirection to 32-bit _ftime().
+ (struct __timeb64, _ftime64): Make visibility condition symbolic...
+ [__MSVCRT_VERSION__ >= __MSVCR61_DLL]: ...thus; add visibility for...
+ [_WIN64 || _WIN32_WINNT >= _WIN32_WINNT_WIN2K]: ...these alternatives.
+ (_ftime) [__MSVCRT_VERSION__ < __MSVCR80_DLL]: Declare prototype.
+ (_ftime) [__MSVCRT_VERSION__ >= __MSVCR80_DLL]: Emulate it...
+ [_USE_32BIT_TIME_T]: ...by in-line redirection to _ftime32(), else...
+ [!_USE_32BIT_TIME_T]: ...to _ftime64().
+
+ * tests/headers.at [sys/timeb.h]: Suppress "deprecated" warnings.
+
+2018-02-22 Keith Marshall <keith@users.osdn.me>
+
+ Correct Windows version support for <utime.h> functions.
+
+ * include/sys/utime.h: Tidy layout; assert copyright.
+ (_UTIME_H_): Rename this repeat inclusion guard macro...
+ (_SYS_UTIME_H): ...to this, for consistency with current practice.
+ (_BEGIN_C_DECLS, _END_C_DECLS): Use them, as appropriate.
+ (struct __utimbuf32): Define it unconditionally; remove...
+ [__MSVCRT_VERSION__>=0x0800]: ...this prerequisite.
+ (_utime32, _wutime32, _futime32): Declare them for...
+ [_WIN32_WINNT >= _WIN32_WINNT_VISTA]: ...this, in addition to...
+ [__MSVCRT_VERSION__>=__MSVCR80_DLL]: ...this original condition, but
+ also emulate them in-line, if neither condition applies.
+ [__MSVCRT_VERSION__>=__MSVCR80.DLL] (_utime, _wutime, _futime):
+ Implement them in-line, delegating each respectively to...
+ [_USE_32BIT_TIME_T] (_utime32, _wutime32, _futime32): ...these, or...
+ [!_USE_32BIT_TIME_T] (_utime64, _wutime64, _futime64): ...to these.
+ [__MSVCRT_VERSION__>=__MSVCR80.DLL] (utime): Implement in-line, or...
+ [__MSVCRT_VERSION__<__MSVCR80.DLL] (utime): ...declare it.
+
+2018-01-17 Keith Marshall <keith@users.osdn.me>
+
+ Fix faulty POSIX deprecation warning logic.
+
+ * include/_mingw.h.in (__POSIX_2008_DEPRECATED): Do not nest...
+ (__POSIX_2001_DEPRECATED): ...within defininion of this; similarly...
+ (__POSIX_1995_DEPRECATED): ...neither within this; rename this as...
+ (__POSIX_1996_DEPRECATED): ...this; although conditional upon...
+ [_POSIX_C_SOURCE >= 199506L]: ...this, the corresponding standard was
+ eventually ratified, not as POSIX.1-1995, but as POSIX.1-1996
+
+2017-12-28 Keith Marshall <keith@users.osdn.me>
+
+ Fix a build issue, assembling generic SX files.
+
+ * Makefile.in (%_generic.sx): Always use $(COMPILE.sx) to pre-process
+ and assemble these; with $(CC) -c $(ALL_CPPFLAGS) $(ASFLAGS), versions
+ of GCC, prior to GCC-4.3, will fail to identify the source file suffix
+ correctly, resulting in failure to assemble the code.
+
+2017-12-18 Keith Marshall <keith@users.osdn.me>
+
+ Support strtok() re-entrancy, per request [#2342].
+
+ * mingwex/strtok_r.c: New file; it implements...
+ (strtok_r): ...this function, per POSIX.1-1995 specification.
+ * Makefile.in (libmingwex.a): Add reference; make it depend on...
+ (strtok_r.$OBJEXT): ...this.
+
+ * include/string.h: Declare corresponding runtime API.
+ [_POSIX_C_SOURCE >= 199506L] (strtok_r): Add function prototype.
+ [__MSVCRT_VERSION__ >= __MSVCR80_DLL] (strtok_s): Likewise; this is
+ the Microsoft equivalent function, first introduced in this non-free
+ MSVC runtime library; subsequently available in MSVCRT.DLL since...
+ [_WIN32_WINNT >= _WIN32_WINNT_VISTA]: ...this release, likewise.
+
+2017-12-16 Keith Marshall <keith@users.osdn.me>
+
+ Implement autotest module for POSIX clock API functions.
+
+ * tests/clockapi.at: New file.
+ * tests/testsuite.at.in (clockapi.at): Incorporate it.
+
+2017-12-15 Keith Marshall <keith@users.osdn.me>
+
+ Implement a subset of the POSIX.1b-1993 clock API.
+
+ * include/time.h [_POSIX_C_SOURCE >= 199309L]
+ (clockid_t): New structured data type; define it opaquely, and...
+ (CLOCK_REALTIME, CLOCK_MONOTONIC): ...declare these extern instances.
+ (clock_getres, clock_gettime, clock_settime): New functions; declare
+ prototypes.
+
+ * mingwex/clockapi.h mingwex/clockapi.c mingwex/clockres.c
+ * mingwex/clockset.c mingwex/clocktime.c: New files; they implement
+ the preceding clock instances, and associated API functions.
+
+ * include/sys/time.h [_POSIX_C_SOURCE >= 200809L] (gettimeofday):
+ Mark it as "deprecated".
+
+2017-12-14 Keith Marshall <keith@users.osdn.me>
+
+ Add support for POSIX.1 "obsolescence" warnings.
+
+ * include/_mingwrt.h.in (__POSIX_1995_DEPRECATED)
+ (__POSIX_2001_DEPRECATED, __POSIX_2008_DEPRECATED): New macros; define
+ them, such as each is conditional on the specific value assigned to...
+ [_POSIX_C_SOURCE]: ...this feature test macro, as the equivalent of...
+ (__MINGW_ATTRIB_DEPRECATED): ...this, or of nothing, as appropriate.
+
+2017-12-06 Keith Marshall <keith@users.osdn.me>
+
+ Prepare and publish MinGW.org WSL-5.0.2 release.
+
+ * All files (wsl-5.0.2-release): Tag assigned.
+
+ * Makefile.in (mingwrt-srcdist-package-files): Add reference...
+ * $mingwrt_srcdir/*.sx: ...for files matching this template.
+
2017-12-02 Keith Marshall <keith@users.osdn.me>
Provide legacy OS work around for issue [#2357]