2872496ba5
When type-checking expressions, detection of uninstantiated generic functions and types was somewhat ad-hoc. Add an extra parameter "allowGenerics" to rawExpr. If not set, the result operand cannot be generic. The only place where rawExpr is called with allowGenerics != false is from exprOrType, which passes an allowGenerics parameter through. The only place where exprOrType is called with allowGenerics == true is when handling index expressions and calls. Make sure that we only accept generic operands where expected, and check the other branches. As a result, a recently added varType call (CL 345970) can be removed again. This also fixes a bug where an error for a conversion to generic type was reported after the conversion (i.e., with the converted value, rather than the generic type). Added a test case for that. For #48048. Change-Id: I8576326f5fcfb58d78b3ce8572068aa32e66c568 Reviewed-on: https://go-review.googlesource.com/c/go/+/346471 Trust: Robert Griesemer <gri@golang.org> Run-TryBot: Robert Griesemer <gri@golang.org> Reviewed-by: Robert Findley <rfindley@google.com> |
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