There are quite a few differences between msvc and the other compilers. For instance: #define a(x,y) x+y void f(int i) { a(i,+); } will compile

There are quite a few differences between msvc and the other compilers. For instance: #define a(x,y) x+y void f(int i) { a(i,+); } will compile without errors with cl but not with any other compiler.