Properly process try/finally blocks.

samples/shell.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
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 #include <v8.h>
 #include <v8-testing.h>
+#include <assert.h>
 #include <fcntl.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 
 
 void RunShell(v8::Handle<v8::Context> context);
 bool ExecuteString(v8::Handle<v8::String> source,
                    v8::Handle<v8::Value> name,
                    bool print_result,
@@ skipping 243 matching lines @@
   v8::TryCatch try_catch;
   v8::Handle<v8::Script> script = v8::Script::Compile(source, name);
   if (script.IsEmpty()) {
     // Print errors that happened during compilation.
     if (report_exceptions)
       ReportException(&try_catch);
     return false;
   } else {
     v8::Handle<v8::Value> result = script->Run();
     if (result.IsEmpty()) {
+      assert(try_catch.HasCaught());
       // Print errors that happened during execution.
       if (report_exceptions)
         ReportException(&try_catch);
       return false;
     } else {
+      assert(!try_catch.HasCaught());
       if (print_result && !result->IsUndefined()) {
         // If all went well and the result wasn't undefined then print
         // the returned value.
         v8::String::Utf8Value str(result);
         const char* cstr = ToCString(str);
         printf("%s\n", cstr);
       }
       return true;
     }
   }
@@ skipping 29 matching lines @@
       printf("^");
     }
     printf("\n");
     v8::String::Utf8Value stack_trace(try_catch->StackTrace());
     if (stack_trace.length() > 0) {
       const char* stack_trace_string = ToCString(stack_trace);
       printf("%s\n", stack_trace_string);
     }
   }
 }