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https://github.com/rust-lang/rust-clippy
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Corrected explicit_counter_loop missing lints if variable used after loop
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2 changed files with 36 additions and 9 deletions
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@ -1996,6 +1996,9 @@ impl<'a, 'tcx> Visitor<'tcx> for InitializeVisitor<'a, 'tcx> {
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if self.state == VarState::DontWarn {
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return;
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}
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if self.past_loop {
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return;
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}
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if SpanlessEq::new(self.cx).eq_expr(&expr, self.end_expr) {
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self.past_loop = true;
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return;
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@ -2024,12 +2027,7 @@ impl<'a, 'tcx> Visitor<'tcx> for InitializeVisitor<'a, 'tcx> {
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_ => (),
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}
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}
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if self.past_loop {
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self.state = VarState::DontWarn;
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return;
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}
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} else if !self.past_loop && is_loop(expr) {
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} else if is_loop(expr) {
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self.state = VarState::DontWarn;
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return;
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} else if is_conditional(expr) {
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@ -573,16 +573,45 @@ mod issue_2496 {
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}
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mod issue_1219 {
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// potential false positive for explicit_counter_loop
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#[warn(clippy::explicit_counter_loop)]
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pub fn test() {
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let thing = 5;
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// should not trigger the lint, because of the continue statement
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let text = "banana";
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let mut count = 0;
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for ch in text.chars() {
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if ch == 'a' {
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continue;
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}
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count += 1
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count += 1;
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}
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println!("{}", count);
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// should trigger the lint
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let text = "banana";
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let mut count = 0;
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for ch in text.chars() {
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if ch == 'a' {
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println!("abc")
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}
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count += 1;
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}
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println!("{}", count);
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// should not trigger the lint
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let text = "banana";
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let mut count = 0;
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for ch in text.chars() {
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if ch == 'a' {
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count += 1;
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}
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}
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println!("{}", count);
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// should trigger the lint
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let text = "banana";
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let mut count = 0;
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for _ch in text.chars() {
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count += 1;
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}
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println!("{}", count);
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}
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