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#! /bin/sh -e

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

dir=
if [ $# -eq 3 -a "$2" = '-d' ]; then
    pdir="-d $3"
    dir="$3/"
elif [ $# -ne 1 ]; then
    echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
    exit 1
fi
case "$1" in
    -patch)
        patch $pdir -f --no-backup-if-mismatch -p1 < $0
        #cd ${dir}gcc && autoconf
        ;;
    -unpatch)
        patch $pdir -f --no-backup-if-mismatch -R -p1 < $0
        #rm ${dir}gcc/configure
        ;;
    *)
        echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
        exit 1
esac
exit 0

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

Index: src/libjava/sysdep/generic/backtrace.h
===================================================================
--- src.orig/libjava/sysdep/generic/backtrace.h	2006-11-06 14:00:32.000000000 -0500
+++ src/libjava/sysdep/generic/backtrace.h	2006-11-06 14:04:38.000000000 -0500
@@ -13,6 +13,20 @@ details.  */
 
 #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 @@ fallback_backtrace (_Unwind_Trace_Fn, _J
 {
   return _URC_NO_REASON;
 }
+
+#endif /* SJLJ_EXCEPTIONS */
+
 #endif