Bug 8202 – Templated function with multiple parameters fails to compile with only one argument if type is not exact

This code void func(T, R)(R range, T value) { } void main() { ubyte[] buffer = [0, 1, 2]; buffer.func!ushort(915); } fails to compile, giving q.d(8): Error: template q.func does not match any function template declaration q.d(1): Error: template q.func(T,R) cannot deduce template function from argument types !(ushort)(ubyte[],int) q.d(8): Error: template instance func!(ushort) errors instantiating template If I change the function call to either buffer.func!(ushort, ubyte[])(915); or buffer.func!ushort(cast(ushort)915); then it compiles. It will also compile if you change it to void func(R, T)(R range, T value) { } void main() { ubyte[] buffer = [0, 1, 2]; buffer.func!(ubyte[])(915); } But for some reason, the compiler cannot handle having just one of the two template parameters given when the function argument associated with the given template parameter is not an exact match.

*** This issue has been marked as a duplicate of issue 8129 ***