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fix(wasi): use mock TLS for all non-threaded WASI targets #378

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fix(wasi): use mock TLS for all non-threaded WASI targets #378

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c49268e
Merge branch 'release/1.8.x' into dev/forward-merge-1.8.x
glessard Aug 6, 2026
7bf6e37
fix(wasi): use mock TLS for all non-threaded WASI targets
aryansk Aug 11, 2026
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4 changes: 2 additions & 2 deletions Sources/System/Internals/Exports.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -184,7 +184,7 @@ extension String {
// TLS
#if os(Windows)
internal typealias _PlatformTLSKey = DWORD
#elseif os(WASI) && (swift(<6.1) || !_runtime(_multithreaded))
#elseif os(WASI) && !_runtime(_multithreaded)
// Mock TLS storage for single-threaded WASI.
// Carries no state of its own, and only used to index `sharedTLSStorage`.
internal final class _PlatformTLSKey: @unchecked Sendable {
Expand Down Expand Up @@ -214,7 +214,7 @@ internal func makeTLSKey() -> _PlatformTLSKey {
fatalError("Unable to create key")
}
return raw
#elseif os(WASI) && (swift(<6.1) || !_runtime(_multithreaded))
#elseif os(WASI) && !_runtime(_multithreaded)
return _PlatformTLSKey()
#else
var raw = pthread_key_t()
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