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-rw-r--r--src/test/ui/issues/issue-52126-assign-op-invariance.rs49
1 files changed, 0 insertions, 49 deletions
diff --git a/src/test/ui/issues/issue-52126-assign-op-invariance.rs b/src/test/ui/issues/issue-52126-assign-op-invariance.rs
deleted file mode 100644
index c96cfdf3c..000000000
--- a/src/test/ui/issues/issue-52126-assign-op-invariance.rs
+++ /dev/null
@@ -1,49 +0,0 @@
-// Issue 52126: With respect to variance, the assign-op's like += were
-// accidentally lumped together with other binary op's. In both cases
-// we were coercing the LHS of the op to the expected supertype.
-//
-// The problem is that since the LHS of += is modified, we need the
-// parameter to be invariant with respect to the overall type, not
-// covariant.
-
-use std::collections::HashMap;
-use std::ops::AddAssign;
-
-pub fn main() {
- panics();
-}
-
-pub struct Counter<'l> {
- map: HashMap<&'l str, usize>,
-}
-
-impl<'l> AddAssign for Counter<'l>
-{
- fn add_assign(&mut self, rhs: Counter<'l>) {
- rhs.map.into_iter().for_each(|(key, val)| {
- let count = self.map.entry(key).or_insert(0);
- *count += val;
- });
- }
-}
-
-/// Often crashes, if not prints invalid strings.
-pub fn panics() {
- let mut acc = Counter{map: HashMap::new()};
- for line in vec!["123456789".to_string(), "12345678".to_string()] {
- let v: Vec<&str> = line.split_whitespace().collect();
- //~^ ERROR `line` does not live long enough
- // println!("accumulator before add_assign {:?}", acc.map);
- let mut map = HashMap::new();
- for str_ref in v {
- let e = map.entry(str_ref);
- println!("entry: {:?}", e);
- let count = e.or_insert(0);
- *count += 1;
- }
- let cnt2 = Counter{map};
- acc += cnt2;
- // println!("accumulator after add_assign {:?}", acc.map);
- // line gets dropped here but references are kept in acc.map
- }
-}