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parser: check assign_stmt of undefined variable (#8366)

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yuyi 2021-01-27 20:52:10 +08:00 committed by GitHub
parent 1f4e8254b9
commit 7a5722c885
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3 changed files with 11 additions and 0 deletions
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5
vlib/v/checker/tests/assign_expr_undefined_err_g.out Normal file
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@ -0,0 +1,5 @@
vlib/v/checker/tests/assign_expr_undefined_err_g.vv:2:14: error: undefined variable: `file`
1 | fn main() {
2 | mut file := file.open_file('bees.pdf', 'rw', 0o666)
| ~~~~
3 | }

3
vlib/v/checker/tests/assign_expr_undefined_err_g.vv Normal file
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@ -0,0 +1,3 @@
fn main() {
mut file := file.open_file('bees.pdf', 'rw', 0o666)
}

3
vlib/v/parser/assign.v
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@ -23,6 +23,9 @@ fn (mut p Parser) check_undefined_variables(exprs []ast.Expr, val ast.Expr) ? {
}
}
}
ast.CallExpr {
p.check_undefined_variables(exprs, val.left) ?
}
ast.InfixExpr {
p.check_undefined_variables(exprs, val.left) ?
p.check_undefined_variables(exprs, val.right) ?