[Bug runtime/14546] DWARF unwinder can corrupt probe memory

[mjw at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14546

--- Comment #2 from Mark Wielaard <mjw at redhat dot com> 2012-09-05 17:39:26 UTC ---
The following "fixes" it for me:

diff --git a/runtime/unwind/unwind.h b/runtime/unwind/unwind.h
index a11dc48..36a9046 100644
--- a/runtime/unwind/unwind.h
+++ b/runtime/unwind/unwind.h
@@ -332,6 +332,7 @@ struct unwind_state {
 struct unwind_context {
     struct unwind_frame_info info;
     struct unwind_state state;
+    char filler[64];
 };

 static const struct cfa badCFA = { ARRAY_SIZE(reg_info), 1 };

So something is definitely writing beyond the end of the unwind_context.

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