checker: error if variable used before decleration p1

2020-06-19 21:31:33 +10:00 · 2020-06-19 21:31:33 +10:00 · 8a5ca4cbdc
parent 624005bbd0
commit 8a5ca4cbdc
1 changed files with 3 additions and 0 deletions
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@ -2084,6 +2084,9 @@ pub fn (mut c Checker) ident(mut ident ast.Ident) table.Type {
 					return obj.typ
 				}
 				ast.Var {
+					if ident.pos.pos < obj.pos.pos {
+						c.error('variable `$ident.name` used before decleration', ident.pos)
+					}
 					mut typ := obj.typ
 					if typ == 0 {
 						if obj.expr is ast.Ident {