types2, go/types: record final type for min/max arguments

Fixes golang#60991

Change-Id: I6130ccecbdc209996dbb376491be9df3b8988327
Reviewed-on: https://go-review.googlesource.com/c/go/+/506055
Run-TryBot: Cuong Manh Le <[email protected]>
Reviewed-by: Robert Griesemer <[email protected]>
Reviewed-by: Robert Findley <[email protected]>
Auto-Submit: Cuong Manh Le <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>

Author: cuonglm

src/cmd/compile/internal/types2/builtins.go

@@ -588,6 +588,11 @@ func (check *Checker) builtin(x *operand, call *syntax.CallExpr, id builtinId) (
 			check.updateExprType(a.expr, x.typ, true)
 		}
 
+		// Use the final type computed above for all arguments.
+		for _, a := range args {
+			check.updateExprType(a.expr, x.typ, true)
+		}
+
 		if check.recordTypes() && x.mode != constant_ {
 			types := make([]Type, nargs)
 			for i := range types {

src/go/types/builtins.go

@@ -587,6 +587,11 @@ func (check *Checker) builtin(x *operand, call *ast.CallExpr, id builtinId) (_ b
 			check.updateExprType(a.expr, x.typ, true)
 		}
 
+		// Use the final type computed above for all arguments.
+		for _, a := range args {
+			check.updateExprType(a.expr, x.typ, true)
+		}
+
 		if check.recordTypes() && x.mode != constant_ {
 			types := make([]Type, nargs)
 			for i := range types {