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Function dmd.funcsem.modifyReturns

Modify all expression type of return statements to tret.

void modifyReturns (
  FuncLiteralDeclaration fld,
  dmd.dscope.Scope* sc,
  Type tret
);

On function literals, return type may be modified based on the context type after its semantic3 is done, in FuncExp::implicitCastTo.

A function() dg = (){ return new B(); } // OK if is(B : A) == true

If B to A conversion is convariant that requires offseet adjusting, all return statements should be adjusted to return expressions typed A.

Authors

Walter Bright

License

Boost License 1.0