checker: vfmt fn.v

Author: medvednikov

examples/gg/drag_n_drop.v

@@ -10,7 +10,7 @@ const text_size = 16
 struct App {
 mut:
 	gg                &gg.Context = unsafe { nil }
-	dropped_file_list []string    = []string{}
+	dropped_file_list []string
 }
 
 fn main() {

vlib/v/checker/fn.v

@@ -1766,10 +1766,11 @@ fn (mut c Checker) fn_call(mut node ast.CallExpr, mut continue_check &bool) ast.
 			// bug with fn...
 			// fn f(p &Foo) => f(foo) -- do not allow this, force f(&foo)
 			// if !c.is_builtin_mod
-			if param.typ == ast.voidptr_type && func.language == .v
+			else if param.typ == ast.voidptr_type && func.language == .v
 				&& arg_typ !in [ast.voidptr_type, ast.nil_type] && arg_typ.nr_muls() == 0
 				&& func.name !in ['isnil', 'ptr_str'] && !func.name.starts_with('json.')
-				&& arg_typ_sym.kind !in [.float_literal, .int_literal] && !c.pref.backend.is_js() {
+				&& arg_typ_sym.kind !in [.float_literal, .int_literal, .charptr]
+				&& !c.pref.backend.is_js() {
 				c.warn('automatic ${arg_typ_sym.name} referencing/dereferencing into voidptr is deprecated and will be removed soon; use `foo(&x)` instead of `foo(x)`',
 					call_arg.pos)
 			}