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checker: fix for_in mut var unused warning (#10008)

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yuyi 2021-05-05 19:11:32 +08:00 committed by GitHub
parent 8c44873674
commit 7c58dfb88b
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 16 additions and 9 deletions
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18
vlib/v/checker/checker.v
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@ -3211,17 +3211,17 @@ pub fn (mut c Checker) assign_stmt(mut assign_stmt ast.AssignStmt) {
left.info = ident_var_info left.info = ident_var_info
if left_type != 0 { if left_type != 0 {
match mut left.obj { match mut left.obj {
ast.Var { left.obj.typ = left_type } ast.Var {
ast.GlobalField { left.obj.typ = left_type } left.obj.typ = left_type
if left.obj.is_auto_deref {
left.obj.is_used = true
}
}
ast.GlobalField {
left.obj.typ = left_type
}
else {} else {}
} }
/*
if left.obj is ast.Var as v {
v.typ = left_type
} else if left.obj is ast.GlobalDecl as v {
v.typ = left_type
}
*/
} }
if is_decl { if is_decl {
full_name := '${left.mod}.$left.name' full_name := '${left.mod}.$left.name'

0
vlib/v/checker/tests/no_warning_for_in_mut_var_unused.out Normal file
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7
vlib/v/checker/tests/no_warning_for_in_mut_var_unused.vv Normal file
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@ -0,0 +1,7 @@
fn main() {
mut arr := [1, 2, 3]
for mut v in arr {
v = 2
}
println(arr)
}