Avoid GC when printing shared function info.

src/objects-printer.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 776 matching lines @@
   HeapObject::PrintHeader(out, "SharedFunctionInfo");
   PrintF(out, " - name: ");
   name()->ShortPrint(out);
   PrintF(out, "\n - expected_nof_properties: %d", expected_nof_properties());
   PrintF(out, "\n - instance class name = ");
   instance_class_name()->Print(out);
   PrintF(out, "\n - code = ");
   code()->ShortPrint(out);
   if (HasSourceCode()) {
     PrintF(out, "\n - source code = ");
-    GetSourceCode()->ShortPrint(out);
+    String* source = String::cast(Script::cast(script())->source());
+    int start = start_position();
+    int length = end_position() - start;
+    SmartArrayPointer<char> source_string =
+        source->ToCString(DISALLOW_NULLS,
+                          FAST_STRING_TRAVERSAL,
+                          start, length, NULL);
+    PrintF(out, "%s", *source_string);
   }
   // Script files are often large, hard to read.
   // PrintF(out, "\n - script =");
   // script()->Print(out);
   PrintF(out, "\n - function token position = %d", function_token_position());
   PrintF(out, "\n - start position = %d", start_position());
   PrintF(out, "\n - end position = %d", end_position());
   PrintF(out, "\n - is expression = %d", is_expression());
   PrintF(out, "\n - debug info = ");
   debug_info()->ShortPrint(out);
@@ skipping 275 matching lines @@
     }
   }
   PrintF(out, "\n");
 }
 
 
 #endif  // OBJECT_PRINT
 
 
 } }  // namespace v8::internal