Andrew Schwartzmeyer created MESOS-8915:
-------------------------------------------
Summary: Re-enable ProcessTest.Process_BENCHMARK_DispatchDefer on
Windows
Key: MESOS-8915
URL: https://issues.apache.org/jira/browse/MESOS-8915
Project: Mesos
Issue Type: Bug
Environment: Windows with Visual Studio 15.7.1 (not earlier)
Reporter: Andrew Schwartzmeyer
Assignee: Andrew Schwartzmeyer
After updating to Visual Studio 15.7.1, the following code in the setup for the
eponymous test no longer compiles:
{noformat}
template <typename T>
Future<Nothing> handler(const T& data)
{
count++;
if (count >= repeat) {
promise->set(Nothing());
return Nothing();
}
dispatch(self(), &Self::_handler).then(
defer(self(), &Self::handler<T>, data));
return Nothing();
}
{noformat}
Specifically it fails with the error:
{noformat}
..\3rdparty\libprocess\src\tests\benchmarks.cpp(566): error C2276: '&': illegal
operation on bound member function expression
..\3rdparty\libprocess\src\tests\benchmarks.cpp(566): note: This diagnostic
occurred in the compiler generated function 'process::Future<Nothing>
DispatchProcess::handler(const T &)'
{noformat}
That is, the compiler is (now) complaining that {{&Self::handler<T>}} is
invalid.
I debugged this a little bit with Michael Park, but we don't know what's gone
wrong (especially considering similar code is working elsewhere, specifically
{{ProcessTest.Dispatch}} and etc.). Fortunately, it only affects this single
test, so the code is being turned off until we can break it down and fix it.
We already tried to (1) declare {{_handler}} before {{handler}}, and (2)
changed {{_handler}}'s access specifier to be {{public}}.
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