Print out line number and extension name when compilation of an extension fails.

src/bootstrapper.cc

 // Copyright 2011 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 20 matching lines @@
 #include "api.h"
 #include "bootstrapper.h"
 #include "compiler.h"
 #include "debug.h"
 #include "execution.h"
 #include "global-handles.h"
 #include "isolate-inl.h"
 #include "macro-assembler.h"
 #include "natives.h"
 #include "objects-visiting.h"
+#include "platform.h"
 #include "snapshot.h"
 #include "extensions/externalize-string-extension.h"
 #include "extensions/gc-extension.h"
 
 namespace v8 {
 namespace internal {
 
 
 NativesExternalStringResource::NativesExternalStringResource(
     Bootstrapper* bootstrapper,
@@ skipping 1948 matching lines @@
       isolate->factory()->NewExternalStringFromAscii(extension->source());
   bool result = CompileScriptCached(
       CStrVector(extension->name()),
       source_code,
       isolate->bootstrapper()->extensions_cache(),
       extension,
       Handle<Context>(isolate->context()),
       false);
   ASSERT(isolate->has_pending_exception() != result);
   if (!result) {
+    // We print out the name of the extension that fail to install.
+    // When an error is thrown during bootstrapping we automatically print
+    // the line number at which this happened to the console in the isolate
+    // error throwing functionality.
+    OS::PrintError("Error installing extension '%s'.\n",
+                   current->extension()->name());
     isolate->clear_pending_exception();
   }
   current->set_state(v8::INSTALLED);
   return result;
 }
 
 
 bool Genesis::InstallJSBuiltins(Handle<JSBuiltinsObject> builtins) {
   HandleScope scope;
   Factory* factory = builtins->GetIsolate()->factory();
@@ skipping 266 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   ASSERT(!IsActive());
 }
 
 } }  // namespace v8::internal