Compiler crash in FoundationEssentials release build for Wasm

[kateinoigakukun]

Describe the bug

Swift compiler crashes during the FoundationEssentials build for WebAssembly target in Swift CI.

https://ci.swift.org/job/oss-swift-pr-test-crosscompile-wasm-ubuntu-20_04/3929/console

SIL verification failed: a destructure of a move-only-type-with-deinit requires a drop_deinit: isa<DropDeinitInst>(lookThroughOwnershipInsts(DSI->getOperand()))
11:52:08  Verifying instruction:
11:52:08     %1 = argument of bb0 : $Subprogress            // users: %10, %11, %6, %3
11:52:08  ->   (%11, %12, %13) = destructure_struct %1 : $Subprogress // users: %117, %14, %15
11:52:08  In function:
11:52:08  // Subprogress.start(totalCount:)
11:52:08  // Isolation: unspecified
11:52:08  sil [ossa] @$s20FoundationEssentials11SubprogressV5start10totalCountAA15ProgressManagerCSiSg_tF : $@convention(method) (Optional<Int>, @owned Subprogress) -> @owned ProgressManager {
11:52:08  [%1: read v**.c*.v**, write v**.c*.v**, copy **, destroy v**.c*.v**]
11:52:08  [global: read,write,copy,destroy,allocate,deinit_barrier]
...

Of course, this is a compiler-side issue but allow me to open it here for visibility.

To Reproduce

Build the latest main revision of swift-foundation 5f2bbd9 with the following command

swift build --swift-sdk swift-DEVELOPMENT-SNAPSHOT-2025-11-03-a_wasm -c release

It looks like 4273e23 is the first bad commit

Expected behavior

Do not crash the compiler

Configuration (please complete the following information):

• Swift Version: swift-DEVELOPMENT-SNAPSHOT-2025-11-03-a
• OS: Ubuntu 22.04

[kateinoigakukun]

Resolved by a compiler fix swiftlang/swift#85524