I get a runtime error from drawtiming if using the libraries from
graphicsmagick-shlibs-1.3.12-1 (any Mac platform):
$ drawtiming -o test.png /sw/share/drawtiming/samples/guenter.txt
Assertion failed: (semaphore_info != (SemaphoreInfo *) NULL), function
LockSemaphoreInfo, file magick/semaphore.c, line 525.
By contrast, with graphicsmagick-shlibs-1.3.7-2 installed, I get the
following:
$ drawtiming -o test.png /sw/share/drawtiming/samples/guenter.txt
$
and test.png is generated
Looking at the graphicsmagick sources, magick/semaphore.c has the
following on 1.3.12-1:
MagickExport void LockSemaphoreInfo(SemaphoreInfo *semaphore_info)
{
assert(semaphore_info != (SemaphoreInfo *) NULL);
assert(semaphore_info->signature == MagickSignature);
#if defined(USE_POSIX_THREADS)
PTHREAD_MUTEX_LOCK(&semaphore_info->mutex);
#endif
#if defined(USE_WIN32_THREADS)
EnterCriticalSection(&semaphore_info->mutex);
#endif
}
and on 1.3.7-2:
MagickExport MagickPassFail LockSemaphoreInfo(SemaphoreInfo *semaphore_info)
{
MagickPassFail
status=MagickPass;
assert(semaphore_info != (SemaphoreInfo *) NULL);
/* assert(semaphore_info->signature == MagickSignature); */
#if defined(USE_POSIX_THREADS)
{
int
err_status;
if ((err_status = pthread_mutex_lock(&semaphore_info->mutex)) != 0)
{
errno=err_status;
status=MagickFail;
}
}
#endif
#if defined(USE_WIN32_THREADS)
EnterCriticalSection(&semaphore_info->mutex);
#endif
return(status);
}
--
Alexander Hansen, Ph.D.
Fink User Liaison
http://finkakh.wordpress.com/
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