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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/issues/issue-19367.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-19367.rs b/src/test/ui/issues/issue-19367.rs new file mode 100644 index 000000000..0699533e7 --- /dev/null +++ b/src/test/ui/issues/issue-19367.rs @@ -0,0 +1,32 @@ +// run-pass +struct S { + o: Option<String> +} + +// Make sure we don't reuse the same alloca when matching +// on field of struct or tuple which we reassign in the match body. + +fn main() { + let mut a = (0, Some("right".to_string())); + let b = match a.1 { + Some(v) => { + a.1 = Some("wrong".to_string()); + v + } + None => String::new() + }; + println!("{}", b); + assert_eq!(b, "right"); + + + let mut s = S{ o: Some("right".to_string()) }; + let b = match s.o { + Some(v) => { + s.o = Some("wrong".to_string()); + v + } + None => String::new(), + }; + println!("{}", b); + assert_eq!(b, "right"); +} |