Hi, I create a really simple Ada program: -- test.adb -- procedure Test is task T; task body T is begin null; end T; begin null; end Test; -- When I compile it with gcc-gnat (gnatmake hello), and try to run the resulting binary it hangs immediately. strace says it blocks on futex(0x804b798,FUTEX_WAIT,0,NULL The same program works on Red Hat 8.0. Howver, if I don't create any tasks it doesn't block on 9. What gives? Is it caused by the new pthreads implementation? -- Johannes Eriksson