Add fuzzing support for inline runtime functions

test/cctest/test-log-stack-tracer.cc

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 //
 // Tests of profiler-related functions from log.h
 
 #ifdef ENABLE_LOGGING_AND_PROFILING
 
 #include <stdlib.h>
 
 #include "v8.h"
 
@@ skipping 214 matching lines @@
 }
 
 
 namespace v8 {
 namespace internal {
 
 class CodeGeneratorPatcher {
  public:
   CodeGeneratorPatcher() {
     CodeGenerator::InlineRuntimeLUT genGetFramePointer =
-        {&CodeGenerator::GenerateGetFramePointer, "_GetFramePointer"};
-    // _FastCharCodeAt is not used in our tests.
+        {&CodeGenerator::GenerateGetFramePointer, "_GetFramePointer", 0};
+    // _RandomPositiveSmi is not used in our tests. The one we replace need to
+    // have the same noumer of arguments as the one we put in, which is zero in
+    // this case.
     bool result = CodeGenerator::PatchInlineRuntimeEntry(
-        NewString("_FastCharCodeAt"),
+        NewString("_RandomPositiveSmi"),
         genGetFramePointer, &oldInlineEntry);
     CHECK(result);
   }
 
   ~CodeGeneratorPatcher() {
     CHECK(CodeGenerator::PatchInlineRuntimeEntry(
         NewString("_GetFramePointer"),
         oldInlineEntry, NULL));
   }
 
@@ skipping 117 matching lines @@
   CHECK_EQ(0, GetJsEntrySp());
   CompileRun("a = 1; b = a + 1;");
   CHECK_EQ(0, GetJsEntrySp());
   CompileRun("js_entry_sp();");
   CHECK_EQ(0, GetJsEntrySp());
   CompileRun("js_entry_sp_level2();");
   CHECK_EQ(0, GetJsEntrySp());
 }
 
 #endif  // ENABLE_LOGGING_AND_PROFILING