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50 lines
1.1 KiB
Rust
50 lines
1.1 KiB
Rust
// check-pass
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fn macros() {
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macro_rules! foo {
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($p:pat, $e:expr, $b:block) => {{
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if let $p = $e $b
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//~^ WARN irrefutable `if let`
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//~| WARN irrefutable `if let`
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}}
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}
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macro_rules! bar{
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($p:pat, $e:expr, $b:block) => {{
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foo!($p, $e, $b)
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}}
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}
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foo!(a, 1, {
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println!("irrefutable pattern");
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});
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bar!(a, 1, {
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println!("irrefutable pattern");
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});
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}
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pub fn main() {
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if let a = 1 { //~ WARN irrefutable `if let`
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println!("irrefutable pattern");
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}
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if let a = 1 { //~ WARN irrefutable `if let`
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println!("irrefutable pattern");
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} else if true {
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println!("else-if in irrefutable `if let`");
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} else {
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println!("else in irrefutable `if let`");
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}
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if let 1 = 2 {
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println!("refutable pattern");
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} else if let a = 1 { //~ WARN irrefutable `if let`
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println!("irrefutable pattern");
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}
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if true {
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println!("if");
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} else if let a = 1 { //~ WARN irrefutable `if let`
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println!("irrefutable pattern");
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}
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}
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