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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/issues/issue-41696.rs | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-41696.rs b/src/test/ui/issues/issue-41696.rs new file mode 100644 index 000000000..d094f7194 --- /dev/null +++ b/src/test/ui/issues/issue-41696.rs @@ -0,0 +1,54 @@ +// run-pass +#![allow(dead_code)] +#![allow(unused_variables)] +#![recursion_limit = "128"] +// this used to cause exponential code-size blowup during LLVM passes. + +#![feature(test)] + +extern crate test; + +struct MayUnwind; + +impl Drop for MayUnwind { + fn drop(&mut self) { + if test::black_box(false) { + panic!() + } + } +} + +struct DS<U> { + may_unwind: MayUnwind, + name: String, + next: U, +} + +fn add<U>(ds: DS<U>, name: String) -> DS<DS<U>> { + DS { + may_unwind: MayUnwind, + name: "?".to_owned(), + next: ds, + } +} + +fn main() { + let deserializers = DS { may_unwind: MayUnwind, name: "?".to_owned(), next: () }; + let deserializers = add(deserializers, "?".to_owned()); + let deserializers = add(deserializers, "?".to_owned()); + let deserializers = add(deserializers, "?".to_owned()); + let deserializers = add(deserializers, "?".to_owned()); + let deserializers = add(deserializers, "?".to_owned()); + let deserializers = add(deserializers, "?".to_owned()); + let deserializers = add(deserializers, "?".to_owned()); // 0.7s + let deserializers = add(deserializers, "?".to_owned()); // 1.3s + let deserializers = add(deserializers, "?".to_owned()); // 2.4s + let deserializers = add(deserializers, "?".to_owned()); // 6.7s + let deserializers = add(deserializers, "?".to_owned()); // 26.0s + let deserializers = add(deserializers, "?".to_owned()); // 114.0s + let deserializers = add(deserializers, "?".to_owned()); // 228.0s + let deserializers = add(deserializers, "?".to_owned()); // 400.0s + let deserializers = add(deserializers, "?".to_owned()); // 800.0s + let deserializers = add(deserializers, "?".to_owned()); // 1600.0s + let deserializers = add(deserializers, "?".to_owned()); // 3200.0s +} |