mirror of https://github.com/rust-lang/rust
45 lines
1.0 KiB
Rust
45 lines
1.0 KiB
Rust
// Test that we correctly consider the type of `match` to be the LUB
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// of the various arms, particularly in the case where regions are
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// involved.
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pub fn opt_str0<'a>(maybestr: &'a Option<String>) -> &'a str {
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if maybestr.is_none() {
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"(none)"
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} else {
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let s: &'a str = maybestr.as_ref().unwrap();
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s
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}
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}
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pub fn opt_str1<'a>(maybestr: &'a Option<String>) -> &'a str {
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if maybestr.is_some() {
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let s: &'a str = maybestr.as_ref().unwrap();
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s
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} else {
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"(none)"
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}
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}
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pub fn opt_str2<'a>(maybestr: &'a Option<String>) -> &'static str {
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if maybestr.is_none() {
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"(none)"
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} else {
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let s: &'a str = maybestr.as_ref().unwrap();
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s
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//~^ ERROR lifetime may not live long enough
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}
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}
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pub fn opt_str3<'a>(maybestr: &'a Option<String>) -> &'static str {
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if maybestr.is_some() {
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let s: &'a str = maybestr.as_ref().unwrap();
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s
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//~^ ERROR lifetime may not live long enough
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} else {
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"(none)"
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}
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}
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fn main() {}
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