Make sure the constant pool size is as promised.

src/disassembler.cc

 // Copyright 2011 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.
 
 #include "src/v8.h"
 
 #include "src/code-stubs.h"
 #include "src/codegen.h"
 #include "src/debug.h"
 #include "src/deoptimizer.h"
@@ skipping 82 matching lines @@
     if (constants > 0) {
       SNPrintF(decode_buffer,
                "%08x       constant",
                *reinterpret_cast<int32_t*>(pc));
       constants--;
       pc += 4;
     } else {
       int num_const = d.ConstantPoolSizeAt(pc);
       if (num_const >= 0) {
         SNPrintF(decode_buffer,
-                 "%08x       constant pool begin",
-                 *reinterpret_cast<int32_t*>(pc));
+                 "%08x       constant pool begin (num_const = %d)",
+                 *reinterpret_cast<int32_t*>(pc), num_const);
         constants = num_const;
         pc += 4;
       } else if (it != NULL && !it->done() && it->rinfo()->pc() == pc &&
           it->rinfo()->rmode() == RelocInfo::INTERNAL_REFERENCE) {
         // raw pointer embedded in code stream, e.g., jump table
         byte* ptr = *reinterpret_cast<byte**>(pc);
         SNPrintF(decode_buffer,
                  "%08" V8PRIxPTR "      jump table entry %4" V8PRIdPTR,
                  reinterpret_cast<intptr_t>(ptr),
                  ptr - begin);
@@ skipping 175 matching lines @@
 
 int Disassembler::Decode(Isolate* isolate, std::ostream* os, byte* begin,
                          byte* end, Code* code) {
   return 0;
 }
 
 #endif  // ENABLE_DISASSEMBLER
 
 }  // namespace internal
 }  // namespace v8