* 1.3.2 bug on NT 4: localtime() & timestring() set errno on success
@ 2001-07-24 11:43 Larisa A Stephan
2001-07-24 13:31 ` Kurt Roeckx
0 siblings, 1 reply; 3+ messages in thread
From: Larisa A Stephan @ 2001-07-24 11:43 UTC (permalink / raw)
To: cygwin
[-- Attachment #1: Type: text/plain, Size: 1283 bytes --]
I notice that localtime() and timestring() tend to set errno to 0x2 even
though they succeed (return a non-NULL pointer). I THINK this is a bug,
but maybe someone can correct me. I checked the archives and found one
mention of this issue, but no one followed up to tell the guy he was nuts,
so maybe it is really a bug.
As long as you are expecting that this could happen, it's not fatal.
However, this appears to be a new phenomenon because an executable that we
had compiled a couple of years back (now unknown DLL version) didn't do
this.
Attached are the following:
An example source file
The output of running this code
My cygcheck output (per the bug reporting instructions)
Thanks, guys. Feel free to let me know if this not a bug, and if so, let
me know where I can read up on the expected behavior of these functions.
-- Larisa Stephan
Raytheon Co.
Larisa_A_Stephan@raytheon.com
(See attached file: time_bug_report.c)(See attached file:
time_bug_report.out)(See attached file: cygcheck.out)
time_bug_report.c
time_bug_report.out
cygcheck.out
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Documentation: http://cygwin.com/docs.html
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[-- Attachment #2: cygcheck.out --]
[-- Type: text/x-Algol68, Size: 13756 bytes --]
Cygnus Win95/NT Configuration Diagnostics
Current System Time: Tue Jul 24 11:27:25 2001
WinNT Ver 4.0 build 1381 Service Pack 3
Path: /cygdrive/c/WINNT/system32
/cygdrive/c/WINNT
/cygdrive/c/program files/NTResKit
/cygdrive/c/program files/NTResKit/Perl
/cygdrive/c/Cayenne/Teamwork/bin
/cygdrive/c/Cayenne/TwkDocTools/doc/bin
/usr/bin
/cygdrive/c/Tornado_03/host/x86-win32/bin
"C
/PROGRA~1/COMMON~1/RandSync/TRANSL~1/LtNts4/"
/cygdrive/c/Program Files/Symantec/pcAnywhere/
/cygdrive/c/APP/CCMAIL60/CCMAIL
/cygdrive/c/DOS
/cygdrive/c/CAYENNE/TWKADATOOLS/BIN/PC-WIN95
SysDir: C:\WINNT\System32
WinDir: C:\WINNT
HOME = `/cygdrive/c/Larisa's Files'
!EXITCODE = `00000002'
!G: = `G:\Program\Common\Source_Code\ccm_wa\image\image-larisa\image'
ATAHOME = `c:\Cayenne\TwkDocTools'
COMPUTERNAME = `ZA_LASTEPHAN'
COMSPEC = `C:\WINNT\system32\cmd.exe'
GHS_LMHOST = `ES-ENG-ATFLIR3'
HOMEDRIVE = `C:'
HOMEPATH = `\users'
INCLUDE = `s:\SQL10\INCLUDE'
LIB = `s:\SQL10\LIB'
LM_LICENSE_FILE = `7192@concord,7192@abyss,7192@packers;7126@es-eng-atflir1'
LOGONSERVER = `\\EN-R01-BDC4'
NTRESKIT = `C:\program files\NTResKit'
NUMBER_OF_PROCESSORS = `1'
OS = `Windows_NT'
OS2LIBPATH = `C:\WINNT\system32\os2\dll;'
PATHEXT = `.COM;.EXE;.BAT;.CMD'
PROCESSOR_ARCHITECTURE = `x86'
PROCESSOR_IDENTIFIER = `x86 Family 6 Model 3 Stepping 4, GenuineIntel'
PROCESSOR_LEVEL = `6'
PROCESSOR_REVISION = `0304'
PROMPT = `$P$G'
SHORT_OS = `NT4'
SYBASE = `s:\SQL10'
SYSTEMDRIVE = `C:'
SYSTEMROOT = `C:\WINNT'
TEMP = `/cygdrive/c/TEMP'
TMP = `/cygdrive/c/TEMP'
TWK_CONFIG = `\\es-eng-atflir2\twkdb1\config_file.txt'
USERDOMAIN = `HUGHES-MAD01'
USERNAME = `00c0221'
USERPROFILE = `C:\WINNT\Profiles\00c0221'
VSLICKCONFIG = `C:\USERS\%USERNAME%\'
VSROOT = `C:\USERS\%USERNAME%\'
WINDIR = `C:\WINNT'
WIND_BASE = `c:\Tornado_03'
WIND_HOST_TYPE = `x86-win32'
TERM = `cygwin'
TZ = `PST8PDT7,M4.1.0/2,M10.5.0/2'
HKEY_CURRENT_USER\Software\Cygnus Solutions
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
(default) = `/cygdrive'
cygdrive flags = 0x00000020
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\00
(default) = `\\.\tape1:'
unix = `/dev/st1'
fbinary = 0x00000000
fsilent = 0x00000001
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\01
(default) = `\\.\tape0:'
unix = `/dev/st0'
fbinary = 0x00000000
fsilent = 0x00000001
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\02
(default) = `\\.\b:'
unix = `/dev/fd1'
fbinary = 0x00000000
fsilent = 0x00000001
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\03
(default) = `\\.\a:'
unix = `/dev/fd0'
fbinary = 0x00000000
fsilent = 0x00000001
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\04
(default) = `C:'
unix = `/'
fbinary = 0x00000000
fsilent = 0x00000000
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/
(default) = `C:/cygwin'
flags = 0x00000008
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
(default) = `C:/cygwin/bin'
flags = 0x00000008
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
(default) = `C:/cygwin/lib'
flags = 0x00000008
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\00
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\01
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\02
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\03
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\04
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\05
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\06
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\07
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\08
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\09
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\0A
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\0B
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\0C
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\0D
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\0E
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\0F
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\10
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\11
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\12
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\13
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\14
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\15
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\16
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\17
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\18
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\19
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\1A
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\1B
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\1C
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\1D
a: fd N/A N/A
c: hd NTFS 4090Mb 56% CP CS UN PA FC
d: fd FAT 95Mb 2% CP UN ZIP-100
g: net NTFS 49999Mb 94% CP CS UN PA FC
h: cd CDFS 607Mb 100% CS MAMBO
p: net NWCompat 36500Mb 100% DATA
s: net NWCompat 13000Mb 42% APPS
y: net NWCompat 3000Mb 34% SYS
C:\cygwin\bin /usr/bin system textmode
C:\cygwin\lib /usr/lib system textmode
C:\cygwin / system textmode
c: /cygdrive/c user textmode,noumount
g: /cygdrive/g user textmode,noumount
h: /cygdrive/h user textmode,noumount
p: /cygdrive/p user textmode,noumount
s: /cygdrive/s user textmode,noumount
y: /cygdrive/y user textmode,noumount
Found: C:\cygwin\bin\bash.exe
Found: c:\program files\NTResKit\cat.exe
Found: C:\cygwin\bin\cat.exe
Warning: c:\program files\NTResKit\cat.exe hides C:\cygwin\bin\cat.exe
Found: C:\cygwin\bin\cpp.exe
Found: c:\Tornado_03\host\x86-win32\bin\cpp.exe
Warning: C:\cygwin\bin\cpp.exe hides c:\Tornado_03\host\x86-win32\bin\cpp.exe
Found: C:\cygwin\bin\find.exe
Found: c:\DOS\find.exe
Warning: C:\cygwin\bin\find.exe hides c:\DOS\find.exe
Found: C:\cygwin\bin\gcc.exe
Found: C:\cygwin\bin\gdb.exe
Found: C:\cygwin\bin\ld.exe
Found: c:\program files\NTResKit\ls.exe
Found: C:\cygwin\bin\ls.exe
Warning: c:\program files\NTResKit\ls.exe hides C:\cygwin\bin\ls.exe
Found: C:\cygwin\bin\make.exe
Found: c:\Tornado_03\host\x86-win32\bin\make.exe
Warning: C:\cygwin\bin\make.exe hides c:\Tornado_03\host\x86-win32\bin\make.exe
Found: C:\cygwin\bin\sh.exe
678k 2001/05/21 .\cygwin1.dll - os=4.0 img=1.0 sys=4.0
"cygwin1.dll" v0.0 ts=2001/5/20 20:28
Cygwin DLL version info:
dll major: 1003
dll minor: 2
dll epoch: 19
dll bad signal mask: 19005
dll old termios: 5
dll malloc env: 28
api major: 0
api minor: 39
shared data: 3
dll identifier: cygwin1
mount registry: 2
cygnus registry name: Cygnus Solutions
cygwin registry name: Cygwin
program options name: Program Options
cygwin mount registry name: mounts v2
cygdrive flags: cygdrive flags
cygdrive prefix: cygdrive prefix
cygdrive default prefix:
build date: Sun May 20 23:28:17 EDT 2001
shared id: cygwin1S3
678k 2001/05/21 .\cygwin1.dll - os=4.0 img=1.0 sys=4.0
"cygwin1.dll" v0.0 ts=2001/5/20 20:28
Cygwin DLL version info:
dll major: 1003
dll minor: 2
dll epoch: 19
dll bad signal mask: 19005
dll old termios: 5
dll malloc env: 28
api major: 0
api minor: 39
shared data: 3
dll identifier: cygwin1
mount registry: 2
cygnus registry name: Cygnus Solutions
cygwin registry name: Cygwin
program options name: Program Options
cygwin mount registry name: mounts v2
cygdrive flags: cygdrive flags
cygdrive prefix: cygdrive prefix
cygdrive default prefix:
build date: Sun May 20 23:28:17 EDT 2001
shared id: cygwin1S3
56k 2000/12/03 C:\cygwin\bin\cygbz21.0.dll - os=4.0 img=1.0 sys=4.0
"cygbz21.0.dll" v0.0 ts=2000/11/20 15:53
45k 2001/04/25 C:\cygwin\bin\cygform5.dll - os=4.0 img=1.0 sys=4.0
"cygform5.dll" v0.0 ts=2001/4/24 22:28
18k 2000/10/23 C:\cygwin\bin\cyggdbm.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm.dll" v0.0 ts=2000/10/22 19:26
17k 2001/01/07 C:\cygwin\bin\cyghistory4.dll - os=4.0 img=1.0 sys=4.0
"cyghistory4.dll" v0.0 ts=2001/1/6 20:34
14k 2000/10/23 C:\cygwin\bin\cygintl.dll - os=4.0 img=1.0 sys=4.0
"cygintl.dll" v0.0 ts=2000/10/23 12:02
81k 2000/12/05 C:\cygwin\bin\cygitcl30.dll - os=4.0 img=1.0 sys=4.0
"cygitcl30.dll" v0.0 ts=2000/11/25 17:43
35k 2000/12/05 C:\cygwin\bin\cygitk30.dll - os=4.0 img=1.0 sys=4.0
"cygitk30.dll" v0.0 ts=2000/11/25 17:43
45k 2000/10/22 C:\cygwin\bin\cygjbig1.dll - os=4.0 img=1.0 sys=4.0
"cygjbig1.dll" v0.0 ts=2000/10/22 16:06
119k 2000/10/23 C:\cygwin\bin\cygjpeg6b.dll - os=4.0 img=1.0 sys=4.0
"cygjpeg6b.dll" v0.0 ts=2000/10/22 17:58
26k 2001/04/25 C:\cygwin\bin\cygmenu5.dll - os=4.0 img=1.0 sys=4.0
"cygmenu5.dll" v0.0 ts=2001/4/24 22:27
156k 2001/04/25 C:\cygwin\bin\cygncurses++5.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++5.dll" v0.0 ts=2001/4/24 22:29
226k 2001/04/25 C:\cygwin\bin\cygncurses5.dll - os=4.0 img=1.0 sys=4.0
"cygncurses5.dll" v0.0 ts=2001/4/24 22:17
15k 2001/04/25 C:\cygwin\bin\cygpanel5.dll - os=4.0 img=1.0 sys=4.0
"cygpanel5.dll" v0.0 ts=2001/4/24 22:27
163k 2001/05/06 C:\cygwin\bin\cygpng2.dll - os=4.0 img=1.0 sys=4.0
"cygpng2.dll" v0.0 ts=2001/5/5 21:05
108k 2001/01/07 C:\cygwin\bin\cygreadline4.dll - os=4.0 img=1.0 sys=4.0
"cygreadline4.dll" v0.0 ts=2001/1/6 20:34
390k 2000/12/05 C:\cygwin\bin\cygtcl80.dll - os=4.0 img=1.0 sys=4.0
"cygtcl80.dll" v0.0 ts=2000/11/25 17:39
5k 2000/12/05 C:\cygwin\bin\cygtclpip80.dll - os=4.0 img=1.0 sys=4.0
10k 2000/12/05 C:\cygwin\bin\cygtclreg80.dll - os=4.0 img=1.0 sys=4.0
"cygtclreg80.dll" v0.0 ts=2000/11/25 17:39
243k 2000/10/23 C:\cygwin\bin\cygtiff3.dll - os=4.0 img=1.0 sys=4.0
"cygtiff3.dll" v0.0 ts=2000/10/22 18:14
623k 2000/12/05 C:\cygwin\bin\cygtk80.dll - os=4.0 img=1.0 sys=4.0
"cygtk80.dll" v0.0 ts=2000/11/25 17:43
41k 2001/05/28 C:\cygwin\bin\cygXpm-noX4.dll - os=4.0 img=1.0 sys=4.0
"cygXpm-noX4.dll" v0.0 ts=2001/5/28 10:57
45k 2000/11/20 C:\cygwin\bin\cygXpm-X4.dll - os=4.0 img=1.0 sys=4.0
"cygXpm-X4.dll" v0.0 ts=2000/11/19 18:45
49k 2001/02/03 C:\cygwin\bin\cygz.dll - os=4.0 img=1.0 sys=4.0
"cygz.dll" v0.0 ts=2001/2/3 12:35
678k 2001/05/21 C:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
"cygwin1.dll" v0.0 ts=2001/5/20 20:28
Cygwin DLL version info:
dll major: 1003
dll minor: 2
dll epoch: 19
dll bad signal mask: 19005
dll old termios: 5
dll malloc env: 28
api major: 0
api minor: 39
shared data: 3
dll identifier: cygwin1
mount registry: 2
cygnus registry name: Cygnus Solutions
cygwin registry name: Cygwin
program options name: Program Options
cygwin mount registry name: mounts v2
cygdrive flags: cygdrive flags
cygdrive prefix: cygdrive prefix
cygdrive default prefix:
build date: Sun May 20 23:28:17 EDT 2001
shared id: cygwin1S3
3188k 1996/05/23 c:\Tornado_03\host\x86-win32\bin\cygwin.dll - os=4.0 img=1.0 sys=4.0
"cygwin.dll" v0.0 ts=1996/4/13 19:10
Use -h to see help about each section
[-- Attachment #3: time_bug_report.c --]
[-- Type: text/x-c, Size: 1156 bytes --]
/*
* File to document bug with localtime() setting errno despite succeeding
* in Cygwin 1.3.2.
* Compile on Windows NT 4 with shell command:
* gcc -Wall -ansi time_bug_report.c -o time_bug_report.exe
*/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <errno.h>
int main (int argc, char *argv[])
{
time_t now;
struct tm *tmp = (struct tm *)NULL;
char *timestring = (char *)NULL;
printf("Before I call anything, errno = 0x%x\n", errno);
printf("(I'll reset errno to 0 before each time library call.)\n");
errno = 0;
now = time(NULL);
printf("time() returned 0x%x and set errno to 0x%x\n",
(unsigned)now, errno);
errno = 0;
timestring = ctime(&now);
printf("timestring() returned 0x%x and set errno to 0x%x\n",
(unsigned)timestring, errno);
if (timestring != (char *)NULL)
{
printf("Hello, it's %s", timestring);
}
errno = 0;
tmp = localtime(&now);
printf("localtime() returned 0x%x and set errno to 0x%x\n",
(unsigned)tmp, errno);
exit(errno);
}
[-- Attachment #4: time_bug_report.out --]
[-- Type: text/plain, Size: 289 bytes --]
Before I call anything, errno = 0x0
(I'll reset errno to 0 before each time library call.)
time() returned 0x3b5dc0f4 and set errno to 0x0
timestring() returned 0x61090100 and set errno to 0x2
Hello, it's Tue Jul 24 11:39:48 2001
localtime() returned 0x610b1cd0 and set errno to 0x2
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: 1.3.2 bug on NT 4: localtime() & timestring() set errno on success
2001-07-24 11:43 1.3.2 bug on NT 4: localtime() & timestring() set errno on success Larisa A Stephan
@ 2001-07-24 13:31 ` Kurt Roeckx
2001-07-24 14:27 ` Don Sharp
0 siblings, 1 reply; 3+ messages in thread
From: Kurt Roeckx @ 2001-07-24 13:31 UTC (permalink / raw)
To: Larisa A Stephan; +Cc: cygwin
On Tue, Jul 24, 2001 at 11:41:26AM -0700, Larisa A Stephan wrote:
> I notice that localtime() and timestring() tend to set errno to 0x2 even
> though they succeed (return a non-NULL pointer). I THINK this is a bug,
> but maybe someone can correct me. I checked the archives and found one
> mention of this issue, but no one followed up to tell the guy he was nuts,
> so maybe it is really a bug.
They themself are no system calls, but probably do call system
calls. Any of the system calls it might have called could have
change errno.
My guess is that it's trying to open some file, but didn't find
it.
Kurt
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: 1.3.2 bug on NT 4: localtime() & timestring() set errno on success
2001-07-24 13:31 ` Kurt Roeckx
@ 2001-07-24 14:27 ` Don Sharp
0 siblings, 0 replies; 3+ messages in thread
From: Don Sharp @ 2001-07-24 14:27 UTC (permalink / raw)
To: cygwin
Kurt Roeckx wrote:
>
> On Tue, Jul 24, 2001 at 11:41:26AM -0700, Larisa A Stephan wrote:
> > I notice that localtime() and timestring() tend to set errno to 0x2 even
> > though they succeed (return a non-NULL pointer). I THINK this is a bug,
> > but maybe someone can correct me. I checked the archives and found one
> > mention of this issue, but no one followed up to tell the guy he was nuts,
> > so maybe it is really a bug.
>
> They themself are no system calls, but probably do call system
> calls. Any of the system calls it might have called could have
> change errno.
In days of yore, it was unsafe to examine errno's value unless an error
had been indicated. As Kurt says above, any system call can alter errno.
Cheers
Don Sharp
>
> My guess is that it's trying to open some file, but didn't find
> it.
>
> Kurt
>
> --
> Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
> Bug reporting: http://cygwin.com/bugs.html
> Documentation: http://cygwin.com/docs.html
> FAQ: http://cygwin.com/faq/
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^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2001-07-24 14:27 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2001-07-24 11:43 1.3.2 bug on NT 4: localtime() & timestring() set errno on success Larisa A Stephan
2001-07-24 13:31 ` Kurt Roeckx
2001-07-24 14:27 ` Don Sharp
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