// Check that NullPointerExceptions thrown from library code are // caught. This detects a number of failures that can be caused by // libgcj being built incorrectly. In particular, we ensure that a // SEGV in native (i.e. C++) code in libgcj is handled correctly. // Regrettably, we cannot guarantee that Double.parseDouble() will // always be native code, or that it will never be inlined. It could // be argued that we should add a method to libgcj that will be // guaranteed forever to be native, but I'm reluctant to add to the // library for the sole purpose of performing this test. public class Throw_2 { public static Throwable obj() { return null; } public static String str() { return null; } static double d; public static void main (String[] args) { // This NullPointerException will, at the time of writing, be // thrown from Java code in libgcj. try { java.util.Vector v = new java.util.Vector (null); System.out.println ("fail: no exception thrown"); } catch (NullPointerException _) { System.out.println ("1"); } catch (Throwable _) { System.out.println ("fail: " + _); } // This one will, at the time of writing, be thrown from C++ // code in libgcj. try { d = Double.parseDouble(str()); System.out.println ("fail: no exception thrown"); } catch (NullPointerException _) { System.out.println ("2"); } catch (Throwable _) { System.out.println ("fail: " + _); } } }
