tests: Simplify backtrace-dwarf (gcc cleanup-13.c) testcase.

The testcase originally came from GCC which was testing the runtime
unwinder using _Unwind_ForcedUnwind. Since we are using our own external
unwinder we can just abort at the right place and unwind from there.

Signed-off-by: Mark Wielaard <mjw@redhat.com>

2 files changed, 9 insertions, 21 deletions

diff --git a/tests/ChangeLog b/tests/ChangeLog
index c68ae26c..63692e3d 100644
--- a/tests/ChangeLog
+++ b/tests/ChangeLog
@@ -1,3 +1,9 @@
+2014-01-04  Mark Wielaard  <mjw@redhat.com>
+
+	* cleanup-13.c (force_unwind_stop): Removed.
+	(force_unwind): Just call abort. Don't setup _Unwind_Exception and
+	don't call _Unwind_ForcedUnwind.
+
 2014-01-03  Mark Wielaard  <mjw@redhat.com>
 
 	* run-addrcfi.sh: Add case for EM_AARCH64.
diff --git a/tests/cleanup-13.c b/tests/cleanup-13.c
index b87c6965..3919b91a 100644
--- a/tests/cleanup-13.c
+++ b/tests/cleanup-13.c
@@ -283,30 +283,12 @@ extern char verify_it[sizeof (cfi_arch_program) - 0x80 < 0x3f80 ? 1 : -1];
 		: : "i" (sizeof (cfi_arch_program)))
 #endif
 #endif
-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)
-    abort ();
-  return _URC_NO_REASON;
-}
+
+/* The original GCC testcase tests the runtime unwinder using
+   _Unwind_ForcedUnwind, we just inspect the child when it aborts.  */
 
 static void force_unwind ()
 {
-  struct _Unwind_Exception *exc = malloc (sizeof (*exc));
-  memset (&exc->exception_class, 0, sizeof (exc->exception_class));
-  exc->exception_cleanup = 0;
-
-#ifndef __USING_SJLJ_EXCEPTIONS__
-  _Unwind_ForcedUnwind (exc, force_unwind_stop, 0);
-#else
-  _Unwind_SjLj_ForcedUnwind (exc, force_unwind_stop, 0);
-#endif
-
   abort ();
 }