| // RUN: rm -rf %t | |
| // RUN: mkdir -p %t | |
| // RUN: %target-build-swift %s -o %t/a.out | |
| // RUN: not --crash %target-run %t/a.out | |
| // REQUIRES: executable_test | |
| // REQUIRES: OS=macosx | |
| // "cyclic metadata dependency detected, aborting" | |
| struct X<T> { | |
| enum S { | |
| case some(T), none | |
| } | |
| init() { a = .none } | |
| var a: S | |
| } | |
| func generic<T>(_: T) {} | |
| // We don't want the metadata allocation to be optimized away | |
| @_semantics("optimize.sil.never") | |
| func main() { | |
| generic(X<()>()) | |
| } | |
| main() |