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Corinna Vinschen 935c33877d posix_spawn: fix get/set uid/gid calls for 32 bit Cygwin 
32 bit Cygwin still exports function calls to support old applications.
E. g., when switching from 16 to 32 bit uid/gid values, new function
like getuid32 have been added and the old getuid function still only
provides 16 bit values.  Newly built applications using getuid are
actually calling getuid32.

However, this link magic isn't performed inside Cygwin itself, so if
newlib functions call getuid, they actually call the old getuid, not
the new getuid32.  This leads to truncated uid/gid values.

https://cygwin.com/pipermail/cygwin/2022-January/250453.html reports
how this leads to problems in posix_spawn.

Fix this temporarily. i686 support will go away soon in Cygwin and the
fix can be dropped.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
 		2022-01-12 11:57:35 +01:00
..
CVSChangeLogs.old
…
cygserver Cygwin: Allow using CFLAGS also for C++ files 2021-08-26 22:21:53 +02:00
cygwin posix_spawn: fix get/set uid/gid calls for 32 bit Cygwin 2022-01-12 11:57:35 +01:00
doc cygwin: Add cocom and patch to build prerequisites in FAQ 2021-12-20 14:00:21 +00:00
testsuite Cygwin: do not build MinGW testsuite/cygrun --with-cross-bootstrap 2022-01-10 09:59:08 -05:00
utils Cygwin: drop support for systems not supporting RFC 4646 locales 2021-10-29 18:19:45 +02:00
CONTRIBUTORS Cygwin: Add Ben Wijen to list of contributors 2021-01-18 12:01:19 +01:00
COPYING
…
COPYING.LIB Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
CYGWIN_LICENSE Clarify source file license in CYGWIN_LICENSE 2016-06-23 21:52:12 +02:00
Makefile.am Cygwin: Conditionally build documentation 2021-12-17 22:28:16 +00:00
Makefile.am.common Cygwin: automake: change @INCLUDES@ to @AM_CPPFLAGS@ to avoid warnings 2021-04-29 11:28:14 +02:00
README Fix typo and wrong URL in winsup/README 2016-05-24 10:25:18 +02:00
acinclude.m4 Cygwin: automake: change @INCLUDES@ to @AM_CPPFLAGS@ to avoid warnings 2021-04-29 11:28:14 +02:00
autogen.sh Cygwin: autogen.sh: Allow running from any directory 2021-05-06 10:56:20 +02:00
configure.ac Cygwin: Conditionally build documentation 2021-12-17 22:28:16 +00:00

README 

THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESSED OR
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Cygwin documentation is available on the net at https://cygwin.com
You might especially be interested in

https://cygwin.com/faq/faq.html#faq.programming.building-cygwin