# DP: Don't try to use _Unwind_Backtrace on SJLJ targets.
# DP: See bug #387875, #388505, GCC PR 29206.

---
 libjava/sysdep/generic/backtrace.h |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)

Index: b/src/libjava/sysdep/generic/backtrace.h
===================================================================
--- a/src/libjava/sysdep/generic/backtrace.h
+++ b/src/libjava/sysdep/generic/backtrace.h
@@ -13,6 +13,20 @@
 
 #include <java-stack.h>
 
+#ifdef SJLJ_EXCEPTIONS
+
+#undef _Unwind_GetIPInfo
+#define _Unwind_GetIPInfo(ctx,ip_before_insn) \
+  (abort (), (void) (ctx), *ip_before_insn = 1, 0)
+
+#undef _Unwind_GetRegionStart
+#define _Unwind_GetRegionStart(ctx) \
+  (abort (), (void) (ctx), 0)
+
+#undef _Unwind_Backtrace
+#define _Unwind_Backtrace(trace_fn,state_ptr) \
+  (fallback_backtrace (trace_fn, state_ptr))
+
 /* Unwind through the call stack calling TRACE_FN with STATE for every stack
    frame.  Returns the reason why the unwinding was stopped.  */
 _Unwind_Reason_Code
@@ -20,4 +34,7 @@
 {
   return _URC_NO_REASON;
 }
+
+#endif /* SJLJ_EXCEPTIONS */
+
 #endif