A while ago, I posted an inquiry email to GraphicsMagick mailing list
about crash while manipulating images.
The problem was due to calling omp_get_max_threads and omp_get_num_threads.
In other words, if I write a thread method which calls a GraphicsMagick
function/method which calls those OpenMP calls eventually, it made a
After discussion, it turned out that Apple's GCC runtime doesn't like
those ( from some version it is said to be broken. ).
Today, good news is that Apple people started to track it.
They sent me email saying that they were aware of the problem and closed
my bug fix request because they were tacking it.
So... if there are people who use GraphicsMagick in their Mac apps,
please rejoice!! :)