Bug 12559 – Multi operators with template mixins produces an error

mixin template T() { S opBinary(string s)(S s) { return S(); } } struct S { S opBinary(string s)(S s) if(0) { return S(); } mixin T; } void main() { S a, b; a + b; } Error: incompatible types for ((a) + (b)): 'S' and 'S' But struct S { S opBinary(string s)(S s) if(0) { return S(); } S opBinary(string s)(S s) { return S(); } } void main() { S a, b; a + b; } Compiles ok

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