[Bug c++/59759] internal compiler error: in unify, using std::enable_if on classes

[gereon.kremer at cs dot rwth-aachen.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59759

--- Comment #14 from Gereon Kremer <gereon.kremer at cs dot rwth-aachen.de> ---
I upgraded to 5.3 and sure enough, the bug still fires:

$ g++ --version
g++ (GCC) 5.3.0

Test_GCC.cpp: In substitution of ‘template<class T> void f(const A<T>*) [with T
= <missing>]’:
Test_GCC.cpp:25:7:   required from here
Test_GCC.cpp:25:7: internal compiler error: in unify, at cp/pt.c:18727
  f(map);