objc4-437.tar.gz

[apple/objc4.git] / test / unwind.m

diff --git a/test/unwind.m b/test/unwind.m
new file mode 100644 (file)
index 0000000..85559ae
--- /dev/null
+++ b/test/unwind.m
@@ -0,0 +1,83 @@
+#include "test.h"
+#include <objc/objc-exception.h>
+#include <Foundation/Foundation.h>
+
+#if !defined(__OBJC2__)
+
+int main()
+{
+    succeed(__FILE__);
+}
+
+#else
+
+static int state;
+
+@interface Foo : NSObject @end
+
+@interface Foo (Unimplemented)
++(void)method;
+@end
+
+
+@implementation Foo
+
+-(void)check { state++; }
++(void)check { testassert(!"caught class object, not instance"); }
+
+static id exc;
+
+static void handler(id unused __unused, void *ctx __unused)
+{
+    testassert(state == 3); state++;
+}
+
++(BOOL) resolveClassMethod:(SEL)__unused name
+{
+    testassert(state == 1); state++;
+    objc_addExceptionHandler(&handler, 0);
+    testassert(state == 2); state++;
+    exc = [Foo new];
+    @throw exc;
+}
+
+
+@end
+
+int main()
+{
+    int i;
+
+    // unwind exception and alt handler through objc_msgSend()
+
+    NSAutoreleasePool *pool = [NSAutoreleasePool new];
+
+    state = 0;
+    for (i = 0; i < 100000; i++) {
+        @try {
+            testassert(state == 0); state++;
+            [Foo method];
+            testassert(0);
+        } @catch (NSException *e) {
+            testassert(0);
+        } @catch (Foo *e) {
+            testassert(e == exc);
+            testassert(state == 4); state++;
+            testassert(state == 5); [e check];  // state++
+            [e release];
+        } @catch (id e) {
+            testassert(0);
+        } @catch (...) {
+            testassert(0);
+        } @finally {
+            testassert(state == 6); state++;
+        }
+        testassert(state == 7); state = 0;
+    }
+
+    [pool drain];
+
+    succeed(__FILE__);
+}
+
+#endif