| | | |------------------|-----------------| |Previous ID | SR-16096 | |Radar | None | |Original Reporter | racer1988 (JIRA User) | |Type | Bug | Attachment: [Download](https://user-images.githubusercontent.com/2727770/164964508-c01dce1d-0198-4bac-ae0a-0e02393492f7.gz) <details> <summary>Additional Detail from JIRA</summary> | | | |------------------|-----------------| |Votes | 0 | |Component/s | Compiler, Foundation, swift | |Labels | Bug, 5.0Regression, CompilerCrash, OptimizedOnly, RunTimeCrash, Runtime | |Assignee | None | |Priority | Medium | md5: 767dafbdc16229adfc2b6eb7f9357f2a </details> **Issue Description:** Compiling Code like: {{let newOnClient: Set\<Hashable\> = filteredClientObjects.filter }}{ (syncObject) -\> Bool in return syncObject.syncIdentifier == nil && syncObject.status != .deleted } with Swift 5.6 and executing it on 5.5 Crashes at runtime. Note: it does not crash while debugging, only on Release optimized builds No details on the crash content: `Thread 22 Crashed:` 0 — *? 0x0 ?* CC matthiaskmt (JIRA User)