A1_works

v8::HandleScope handle_scope;
v8::Context::Scope scope(my_context);

v8::Handle<v8::Function> func1;
{
	v8::TryCatch try_catch;
	v8::Handle<v8::Script> func1_script = v8::Script::Compile(v8::String::New("func1"), v8::String::New("inline::code"));
	v8::Handle<v8::Value> func1_res = func1_script->Run();
	func1 = v8::Handle<v8::Function>::Cast(func1_res);
}
v8::Handle<v8::Function> func2;
{
	v8::TryCatch try_catch;
	v8::Handle<v8::Script> func2_script = v8::Script::Compile(v8::String::New("func2"), v8::String::New("inline::code"));
	v8::Handle<v8::Value> func2_res = func2_script->Run();
	func2 = v8::Handle<v8::Function>::Cast(func2_res);
}

v8::Handle<v8::Value> func1_args[2] = {v8::String::New("foo"), v8::String::New("bar")};
v8::Handle<v8::Value> val1 = func1->Call(my_context->Global(), 2, func1_args);

v8::Handle<v8::Value> func2_args[1] = {v8::String::New("baz")};
v8::Handle<v8::Value> val2 = func2->Call(my_context->Global(), 1, func2_args);

A2_broken

v8::HandleScope handle_scope;
v8::Context::Scope scope(my_context);

v8::Handle<v8::Value> execstr(v8::Handle<v8::String> str) {
	v8::HandleScope handle_scope;
	v8::Context::Scope scope(my_context);

	v8::TryCatch try_catch;
	v8::Handle<v8::Script> script = v8::Script::Compile(str, v8::String::New("inline::code"));
	return script->Run();
}


// .....


v8::Handle<v8::Function> func1 = v8::Handle<v8::Function>::Cast(execstr(v8::String::New("func1")));
v8::Handle<v8::Function> func2 = v8::Handle<v8::Function>::Cast(execstr(v8::String::New("func2")));

v8::Handle<v8::Value> func1_args[2] = {v8::String::New("foo"), v8::String::New("bar")};
v8::Handle<v8::Value> val1 = func1->Call(my_context->Global(), 2, func1_args);
// usually this fails, or it segfaults at this point
// but if i were to comment out the line above that assigns `func2`, then it works fine. :(

v8::Handle<v8::Value> func2_args[1] = {v8::String::New("baz")};
v8::Handle<v8::Value> val2 = func2->Call(my_context->Global(), 1, func2_args);

B1_works

v8::HandleScope handle_scope;
v8::Context::Scope scope(my_context);

v8::Handle<v8::Function> func3;

const char* ToCString(const v8::String::Utf8Value& value) {
	return *value ? *value : "<string conversion failed>";
}

v8::Handle<v8::Object> getObj() {
	v8::HandleScope handle_scope;
	v8::Context::Scope scope(my_context);

	v8::TryCatch try_catch;
	v8::Handle<v8::Script> func3_script = v8::Script::Compile(v8::String::New("func3"), v8::String::New("inline::code"));
	v8::Handle<v8::Value> func3_res = func3_script->Run();
	func3 = v8::Handle<v8::Function>::Cast(func3_res);

	v8::Handle<v8::Value> func3_args[0] = {};
	v8::Handle<v8::Value> val3 = func3->Call(my_context->Global(), 0, func3_args);
	return v8::Handle<v8::Object>::Cast(val3);
}


// .....


{
	v8::Handle<v8::Object> obj3 = getObj();

	v8::Handle<v8::Value> v3_1 = obj3->Get(v8::String::New("prop3_1"));
	std::string s3_1 = ToCString(v8::String::Utf8Value(v3_1));
	printf("%s\n",s3_1.c_str());
	// ^^^^^ this works fine.

	v8::Handle<v8::Value> v3_2 = obj3->Get(v8::String::New("prop3_2"));
	std::string s3_2 = ToCString(v8::String::Utf8Value(v3_2));
	printf("$s\n",s3_2.c_str());
	// ^^^^^ this works fine.
}

B2_broken

v8::HandleScope handle_scope;
v8::Context::Scope scope(my_context);

v8::Handle<v8::Function> func3;

const char* ToCString(const v8::String::Utf8Value& value) {
	return *value ? *value : "<string conversion failed>";
}

v8::Handle<v8::Object> getObj() {
	v8::HandleScope handle_scope;
	v8::Context::Scope scope(my_context);

	v8::Handle<v8::Value> func3_args[0] = {};
	v8::Handle<v8::Value> val3 = func3->Call(my_context->Global(), 0, func3_args);
	return v8::Handle<v8::Object>::Cast(val3);
}


// .....


{
	v8::TryCatch try_catch;
	v8::Handle<v8::Script> func3_script = v8::Script::Compile(v8::String::New("func3"), v8::String::New("inline::code"));
	v8::Handle<v8::Value> func3_res = func3_script->Run();
	func3 = v8::Handle<v8::Function>::Cast(func3_res);
}

{
	v8::Handle<v8::Object> obj3 = getObj();

	v8::Handle<v8::Value> v3_1 = obj3->Get(v8::String::New("prop3_1"));
	std::string s3_1 = ToCString(v8::String::Utf8Value(v3_1));
	printf("%s\n",s3_1.c_str());
	// ^^^^^ this works fine.

	v8::Handle<v8::Value> v3_2 = obj3->Get(v8::String::New("prop3_2"));
	std::string s3_2 = ToCString(v8::String::Utf8Value(v3_2));
	printf("$s\n",s3_2.c_str());
	// ^^^^^ this fails, prints out "undefined"
}