Provide opt-out condition for sys_signame[].

grynspan · grynspan · commit 10231eae9f5d · 2025-09-30T16:06:42.000-04:00
This PR adds `SWT_NO_SYS_SIGNAME` which can be set in environments where the [`sys_signame[]`](https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man3/sys_signame.3.html) array is not available.
diff --git a/Sources/Testing/ExitTests/ExitStatus.swift b/Sources/Testing/ExitTests/ExitStatus.swift
@@ -121,6 +121,7 @@ extension ExitStatus: CustomStringConvertible {
       var signalName: String?
 
 #if SWT_TARGET_OS_APPLE || os(FreeBSD) || os(OpenBSD) || os(Android)
+#if !SWT_NO_SYS_SIGNAME
       // These platforms define sys_signame with a size, which is imported
       // into Swift as a tuple.
       withUnsafeBytes(of: sys_signame) { sys_signame in
@@ -130,6 +131,7 @@ extension ExitStatus: CustomStringConvertible {
           }
         }
       }
+#endif
 #elseif os(Linux)
 #if !SWT_NO_DYNAMIC_LINKING
       signalName = _sigabbrev_np?(signal).flatMap(String.init(validatingCString:))

Original file line number	Diff line number	Diff line change
`@@ -121,6 +121,7 @@ extension ExitStatus: CustomStringConvertible {`
`121`	`121`	`var signalName: String?`
`122`	`122`
`123`	`123`	`#if SWT_TARGET_OS_APPLE \|\| os(FreeBSD) \|\| os(OpenBSD) \|\| os(Android)`
	`124`	`+#if !SWT_NO_SYS_SIGNAME`
`124`	`125`	`// These platforms define sys_signame with a size, which is imported`
`125`	`126`	`// into Swift as a tuple.`
`126`	`127`	`withUnsafeBytes(of: sys_signame) { sys_signame in`
`@@ -130,6 +131,7 @@ extension ExitStatus: CustomStringConvertible {`
`130`	`131`	`}`
`131`	`132`	`}`
`132`	`133`	`}`
	`134`	`+#endif`
`133`	`135`	`#elseif os(Linux)`
`134`	`136`	`#if !SWT_NO_DYNAMIC_LINKING`
`135`	`137`	`signalName = _sigabbrev_np?(signal).flatMap(String.init(validatingCString:))`