Fix crash with --trace-deoptimization-verbose and tweak formatting.

runtime/vm/deopt_instructions.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/deopt_instructions.h"
 
 #include "vm/assembler.h"
 #include "vm/code_patcher.h"
 #include "vm/intermediate_language.h"
 #include "vm/locations.h"
@@ skipping 249 matching lines @@
     if (!objects_only || IsObjectInstruction(instr->kind())) {
       instr->Execute(this, to_addr);
     } else {
       *reinterpret_cast<RawObject**>(to_addr) = Object::null();
     }
   }
 
   if (FLAG_trace_deoptimization_verbose) {
     intptr_t* start = dest_frame_;
     for (intptr_t i = 0; i < frame_size; i++) {
-      OS::PrintErr("*%" Pd ". [%" Px "] %#014" Px " [%s]\n",
+      OS::PrintErr("*%" Pd ". [0x%" Px "] 0x%" Px " [%s]\n",
                    i,
                    reinterpret_cast<uword>(&start[i]),
                    start[i],
                    deopt_instructions[i + (len - frame_size)]->ToCString());
     }
   }
 }
 
 
 static void FillDeferredSlots(DeoptContext* deopt_context,
@@ skipping 35 matching lines @@
     StackFrame* top_frame = iterator.NextFrame();
     ASSERT(top_frame != NULL);
     const Code& code = Code::Handle(top_frame->LookupDartCode());
     const Function& top_function = Function::Handle(code.function());
     const Script& script = Script::Handle(top_function.script());
     const intptr_t token_pos = code.GetTokenIndexOfPC(top_frame->pc());
     intptr_t line, column;
     script.GetTokenLocation(token_pos, &line, &column);
     String& line_string = String::Handle(script.GetLine(line));
     OS::PrintErr("  Function: %s\n", top_function.ToFullyQualifiedCString());
-    OS::PrintErr("  Line %" Pd ": '%s'\n", line, line_string.ToCString());
+    char line_buffer[80];
+    OS::SNPrint(line_buffer, sizeof(line_buffer), "  Line %" Pd ": '%s'",
+                line, line_string.ToCString());
+    OS::PrintErr("%s\n", line_buffer);
     OS::PrintErr("  Deopt args: %" Pd "\n", deopt_arg_count);
   }
 
   return deopt_arg_count;
 }
 
 
 RawArray* DeoptContext::DestFrameAsArray() {
   ASSERT(dest_frame_ != NULL && dest_frame_is_allocated_);
   const Array& dest_array =
@@ skipping 1002 matching lines @@
                           Smi* offset,
                           DeoptInfo* info,
                           Smi* reason) {
   intptr_t i = index * kEntrySize;
   *offset ^= table.At(i);
   *info ^= table.At(i + 1);
   *reason ^= table.At(i + 2);
 }
 
 }  // namespace dart