Re: VC++ 2005 beta1 fails with pthreads benchmark tests

"Carl Daniel [VC++ MVP]" wrote
> um wrote:
> > When the POSIX pthreads library for w32 release 2-2-0
> > (http://sources.redhat.com/pthreads-win32/) is compiled with VC++6
> > then it compiles and passes all the benchmark tests in the
> > subdirectory "tests". Also, VC++ 2005 beta 1 compiles the tests fine,
> > but here the following
> > tests fail in execution:
> >
> > # semaphore1.pass \
> > # condvar2.pass \
> > # condvar2_1.pass \
> > # mutex8.pass \
> > # mutex8n.pass \
> > # mutex8e.pass \
> > # mutex8r.pass \
> > # condvar3.pass \
> > # condvar3_1.pass \
> > # condvar3_2.pass \
> > # condvar3_3.pass \
> > # condvar4.pass \
> > # condvar5.pass \
> > # condvar6.pass \
> > # condvar7.pass \
> > # condvar8.pass \
> > # condvar9.pass \
> > # rwlock7.pass \
> > # rwlock8.pass \
> > # rwlock2_t.pass \
> > # rwlock3_t.pass \
> > # rwlock4_t.pass \
> > # rwlock5_t.pass \
> > # rwlock6_t.pass \
> > # rwlock6_t2.pass \
> > # spin4.pass \
> >
> > Why are there such differences in execution of the generated code
> > between VC++6 and VC++2005 ? Is this due to bugs in the beta1,
> > or is this the result of general differences between the two products?
> > Are there any compiler/linker switches for backwards "compatibility"
> > to VC++6?
>
> You're going to need to post a lot more details to get a satisfying answer,
> unless a pthreads-win32 expert happens to read this newsgroup.
>
> I'd suggest examining a single failure in depth with the goal of producing a
> simple small program that behaves differently on VC6 versus VC8 beta 1 (also
> note that beta 2 was released lasts Friday).

Here is the result of the compile and test execution process for VC++2005.
I have appended also the code location of the first failed test (semaphore1.c).
As said, VC++6 compiles and passes all tests, whereas VC++2005 fails
with many of the tests.

---
Setting environment for using Microsoft Visual Studio 2005 tools.
(If you have another version of Visual Studio or Visual C++ installed and wish
to use its tools from the command line, run vsvars32.bat for that version.)

E:\>cd F:\FILES\Thread_Programming\pthreads\MyTests\tests

E:\>f:

F:\FILES\Thread_Programming\pthreads\MyTests\tests>nmake clean VC

Microsoft (R) Program Maintenance Utility Version 8.00.40607.16
Copyright (C) Microsoft Corporation. All rights reserved.

erase *.dll
erase *.lib
erase pthread.h
erase semaphore.h
erase sched.h
erase *.e
Could Not Find F:\FILES\Thread_Programming\pthreads\MyTests\tests\*.e
erase *.i
Could Not Find F:\FILES\Thread_Programming\pthreads\MyTests\tests\*.i
erase *.obj
erase *.pdb
erase *.o
Could Not Find F:\FILES\Thread_Programming\pthreads\MyTests\tests\*.o
erase *.asm
Could Not Find F:\FILES\Thread_Programming\pthreads\MyTests\tests\*.asm
erase *.exe
erase *.pass
erase *.bench
Could Not Find F:\FILES\Thread_Programming\pthreads\MyTests\tests\*.bench
erase *.log
Could Not Find F:\FILES\Thread_Programming\pthreads\MyTests\tests\*.log

Microsoft (R) Program Maintenance Utility Version 8.00.40607.16
Copyright (C) Microsoft Corporation. All rights reserved.

Copying pthreadVC2.lib
1 file(s) copied.
Copying pthreadVC2.dll
1 file(s) copied.
Copying pthread.h
1 file(s) copied.
Copying semaphore.h
1 file(s) copied.
Copying sched.h
1 file(s) copied.
cl /D__CLEANUP_C /O2 /Ob0 /W3 /WX /MD /nologo /Yd /Zi -I. sizes.c /Fesizes.exe
/link /INCREMENTAL:NO pthreadVC2.lib ws2_32.lib
cl : Command line warning D9035 : option 'Yd' has been deprecated and will be
removed in a future release
sizes.c
NMAKE : warning U4004: too many rules for target 'sizes.pass'
.... Running VC2 test: sizes.exe
Sizes of pthreads-win32 structs
-------------------------------
pthread_t 8
ptw32_thread_t 136
pthread_attr_t_ 28
sem_t_ 12
pthread_mutex_t_ 24
pthread_mutexattr_t_ 8
pthread_spinlock_t_ 8
pthread_barrier_t_ 24
pthread_barrierattr_t_ 4
pthread_key_t_ 16
pthread_cond_t_ 32
pthread_condattr_t_ 4
pthread_rwlock_t_ 28
pthread_rwlockattr_t_ 4
pthread_once_t_ 16
ptw32_cleanup_t 12
sched_param 4
-------------------------------
....... Passed
cl /D__CLEANUP_C /O2 /Ob0 /W3 /WX /MD /nologo /Yd /Zi -I. loadfree.c
/Feloadfree.exe /link /INCREMENTAL:NO pthreadVC2.lib ws2_32.lib
cl : Command line warning D9035 : option 'Yd' has been deprecated and will be
removed in a future release
loadfree.c
1 file(s) copied.
1 file(s) copied.
.... Running VC test: loadfree.exe
....... Passed
cl /D__CLEANUP_C /O2 /Ob0 /W3 /WX /MD /nologo /Yd /Zi -I. self1.c /Feself1.exe
/link /INCREMENTAL:NO pthreadVC2.lib ws2_32.lib
cl : Command line warning D9035 : option 'Yd' has been deprecated and will be
removed in a future release
self1.c
.... Running VC test: self1.exe
....... Passed
cl /D__CLEANUP_C /O2 /Ob0 /W3 /WX /MD /nologo /Yd /Zi -I. mutex5.c /Femutex5.exe
/link /INCREMENTAL:NO pthreadVC2.lib ws2_32.lib
cl : Command line warning D9035 : option 'Yd' has been deprecated and will be
removed in a future release
mutex5.c
.... Running VC test: mutex5.exe
....... Passed
cl /D__CLEANUP_C /O2 /Ob0 /W3 /WX /MD /nologo /Yd /Zi -I. mutex1.c /Femutex1.exe
/link /INCREMENTAL:NO pthreadVC2.lib ws2_32.lib
cl : Command line warning D9035 : option 'Yd' has been deprecated and will be
removed in a future release
mutex1.c
.... Running VC test: mutex1.exe
....... Passed
cl /D__CLEANUP_C /O2 /Ob0 /W3 /WX /MD /nologo /Yd /Zi -I. mutex1n.c
/Femutex1n.exe /link /INCREMENTAL:NO pthreadVC2.lib ws2_32.lib
cl : Command line warning D9035 : option 'Yd' has been deprecated and will be rem
oved in a future release
mutex1n.c
.... Running VC test: mutex1n.exe
....... Passed
cl /D__CLEANUP_C /O2 /Ob0 /W3 /WX /MD /nologo /Yd /Zi -I. mutex1e.c
/Femutex1e.exe /link /INCREMENTAL:NO pthreadVC2.lib ws2_32.lib
cl : Command line warning D9035 : option 'Yd' has been deprecated and will be
removed in a future release
mutex1e.c
.... Running VC test: mutex1e.exe
....... Passed
cl /D__CLEANUP_C /O2 /Ob0 /W3 /WX /MD /nologo /Yd /Zi -I. mutex1r.c
/Femutex1r.exe /link /INCREMENTAL:NO pthreadVC2.lib ws2_32.lib
cl : Command line warning D9035 : option 'Yd' has been deprecated and will be
removed in a future release
mutex1r.c
.... Running VC test: mutex1r.exe
....... Passed
cl /D__CLEANUP_C /O2 /Ob0 /W3 /WX /MD /nologo /Yd /Zi -I. semaphore1.c
/Fesemaphore1.exe /link /INCREMENTAL:NO pthreadVC2.lib ws2_32.lib
cl : Command line warning D9035 : option 'Yd' has been deprecated and will be
removed in a future release
semaphore1.c
.... Running VC test: semaphore1.exe
thread: sem_trywait 1: expected error: No error
Assertion failed: (errno == EAGAIN), file semaphore1.c, line 89
NMAKE : fatal error U1077: '.\semaphore1.exe' : return code '0x1'
Stop.
NMAKE : fatal error U1077: 'nmake' : return code '0x2'
Stop.
--

The first error happens with semaphore1.exe (semaphore1.c line 89):

void *
thr(void * arg)
{
sem_t s;
int result;

assert(sem_init(&s, PTHREAD_PROCESS_PRIVATE, 0) == 0);

assert((result = sem_trywait(&s)) == -1);

if ( result == -1 )
{
perror("thread: sem_trywait 1: expected error"); // No error
assert(errno == EAGAIN);


It is the last assert which fails in the first of the failing test programs.


.

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