PPC: [debugger] do not restart frames that reference new.target for liveedit.c

src/debug/ppc/debug-ppc.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 
 namespace v8 {
@@ skipping 120 matching lines @@
   // Load the function pointer off of our current stack frame.
   __ LoadP(r4, MemOperand(fp, StandardFrameConstants::kConstantPoolOffset -
                                   kPointerSize));
 
   // Pop return address and frame
   __ LeaveFrame(StackFrame::INTERNAL);
 
   // Load context from the function.
   __ LoadP(cp, FieldMemOperand(r4, JSFunction::kContextOffset));
 
+  // Clear new.target as a safety measure.
+  __ LoadRoot(r6, Heap::kUndefinedValueRootIndex);
+
   // Get function code.
   __ LoadP(ip, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset));
   __ LoadP(ip, FieldMemOperand(ip, SharedFunctionInfo::kCodeOffset));
   __ addi(ip, ip, Operand(Code::kHeaderSize - kHeapObjectTag));
 
   // Re-run JSFunction, r4 is function, cp is context.
   __ Jump(ip);
 }
 
 
 const bool LiveEdit::kFrameDropperSupported = true;
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC