obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 82 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/eh/forced1.C b/gcc/testsuite/g++.dg/eh/forced1.C
new file mode 100644
index 000000000..b0200813e
--- /dev/null
+++ b/gcc/testsuite/g++.dg/eh/forced1.C
@@ -0,0 +1,82 @@
+// HP-UX libunwind.so doesn't provide _UA_END_OF_STACK.
+// { dg-do run { xfail "ia64-hp-hpux11.*" } }
+
+// Test that forced unwinding runs all cleanups.  Also tests that
+// rethrowing doesn't call the exception object destructor.
+
+#include <unwind.h>
+#include <stdlib.h>
+#include <string.h>
+
+static int test = 0;
+
+static _Unwind_Reason_Code
+force_unwind_stop (int version, _Unwind_Action actions,
+                   _Unwind_Exception_Class exc_class,
+                   struct _Unwind_Exception *exc_obj,
+                   struct _Unwind_Context *context,
+                   void *stop_parameter)
+{
+  if (actions & _UA_END_OF_STACK)
+    {
+      if (test != 15)
+        abort ();
+      exit (0);
+    }
+
+  return _URC_NO_REASON;
+}
+
+static void
+force_unwind_cleanup (_Unwind_Reason_Code, struct _Unwind_Exception *)
+{
+  abort ();
+}
+
+static void force_unwind ()
+{
+  _Unwind_Exception *exc = new _Unwind_Exception;
+  // exception_class might not be a scalar.
+  memset (&exc->exception_class, 0, sizeof (exc->exception_class));
+  exc->exception_cleanup = force_unwind_cleanup;
+
+#ifndef __USING_SJLJ_EXCEPTIONS__
+  _Unwind_ForcedUnwind (exc, force_unwind_stop, 0);
+#else
+  _Unwind_SjLj_ForcedUnwind (exc, force_unwind_stop, 0);
+#endif
+
+  abort ();
+}
+
+struct S
+{
+  int bit;
+  S(int b) : bit(b) { }
+  ~S() { test |= bit; }
+};
+  
+static __attribute__ ((noinline)) void doit ()
+{
+  try {
+    S four(4);
+
+    try {
+      S one(1);
+      force_unwind ();
+    } catch(...) { 
+      test |= 2;
+      throw;
+    }
+
+  } catch(...) {
+    test |= 8;
+    throw;
+  }
+}
+
+int main()
+{ 
+  doit ();
+  abort ();
+}