diff options
Diffstat (limited to 'tests/ui/issues/issue-34796.rs')
-rw-r--r-- | tests/ui/issues/issue-34796.rs | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/tests/ui/issues/issue-34796.rs b/tests/ui/issues/issue-34796.rs new file mode 100644 index 000000000..88d5c50a2 --- /dev/null +++ b/tests/ui/issues/issue-34796.rs @@ -0,0 +1,28 @@ +// run-pass +#![allow(dead_code)] +// This test case exposes conditions where the encoding of a trait object type +// with projection predicates would differ between this crate and the upstream +// crate, because the predicates were encoded in different order within each +// crate. This led to different symbol hashes of functions using these type, +// which in turn led to linker errors because the two crates would not agree on +// the symbol name. +// The fix was to make the order in which predicates get encoded stable. + +// aux-build:issue-34796-aux.rs +extern crate issue_34796_aux; + +fn mk<T>() -> T { loop {} } + +struct Data<T, E> { + data: T, + error: E, +} + +fn main() { + issue_34796_aux::bar(|()| { + Data::<(), std::io::Error> { + data: mk(), + error: mk(), + } + }) +} |