"Unqualified lookup in templates" build failure(s) — clang 3.9.1

This code is accepted by g++. On purpose, clang does not accept this syntax.
// Uncomment this line will fix the issue.
// template<typename Value_t> void b(Value_t value)

template<typename Value_t> void a(Value_t value)
{
    b(value);
}

template<typename Value_t> void b(Value_t value)
{
}

void foo(int y)
{
    a(y);
}
PackageVersionSupposed error messageFull log Bug report
anfo 0.98-5stl_function.h:386:20: error: call to function 'operator<' that is neither visible in the template definition nor found by argument-dependent lookup Log
dymo-cups-drivers 1.4.0-6TestAssert.h:61:13: error: call to function 'operator<<' that is neither visible in the template definition nor found by argument-dependent lookup Log

2 errors