Bug 20121 – "template lambda has no value" when assigned to struct

Lambdas don't correctly decay to functions or delegates when assigned via opAssign, but do so correctly for regular functions and member functions, even calling opAssign directly, and with property syntax: unittest { S s; s.opAssign(i => i + 1); // Works s.opAssign = i => i + 1; // Works s = i => i + 1; // Fails (template lambda has no value) } struct S { void opAssign(int delegate(int) fn) {} void opAssign(int function(int) fn) {} }

The example works since 2.097.0