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Diffstat (limited to 'tests/ui/nll/lub-match.rs')
-rw-r--r-- | tests/ui/nll/lub-match.rs | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/tests/ui/nll/lub-match.rs b/tests/ui/nll/lub-match.rs new file mode 100644 index 000000000..454dd1fc6 --- /dev/null +++ b/tests/ui/nll/lub-match.rs @@ -0,0 +1,47 @@ +// Test that we correctly consider the type of `match` to be the LUB +// of the various arms, particularly in the case where regions are +// involved. + +pub fn opt_str0<'a>(maybestr: &'a Option<String>) -> &'a str { + match *maybestr { + Some(ref s) => { + let s: &'a str = s; + s + } + None => "(none)", + } +} + +pub fn opt_str1<'a>(maybestr: &'a Option<String>) -> &'a str { + match *maybestr { + None => "(none)", + Some(ref s) => { + let s: &'a str = s; + s + } + } +} + +pub fn opt_str2<'a>(maybestr: &'a Option<String>) -> &'static str { + match *maybestr { + None => "(none)", + Some(ref s) => { + let s: &'a str = s; + s + //~^ ERROR lifetime may not live long enough + } + } +} + +pub fn opt_str3<'a>(maybestr: &'a Option<String>) -> &'static str { + match *maybestr { + Some(ref s) => { + let s: &'a str = s; + s + //~^ ERROR lifetime may not live long enough + } + None => "(none)", + } +} + +fn main() {} |