SR-14796: Don't lose '-sdk /' when dropping the trailing slash

finagolfin · finagolfin · commit 1345e48659f6 · 2021-07-30T02:05:48.000+05:30
diff --git a/Sources/SwiftDriver/Driver/Driver.swift b/Sources/SwiftDriver/Driver/Driver.swift
@@ -2100,7 +2100,7 @@ extension Driver {
     }
 
     // Delete trailing /.
-    sdkPath = sdkPath.map { $0.last == "/" ? String($0.dropLast()) : $0 }
+    sdkPath = sdkPath.map { $0.length > 1 && $0.last == "/" ? String($0.dropLast()) : $0 }
 
     // Validate the SDK if we found one.
     if let sdkPath = sdkPath {

Original file line number	Diff line number	Diff line change
`@@ -2100,7 +2100,7 @@ extension Driver {`
`2100`	`2100`	`}`
`2101`	`2101`
`2102`	`2102`	`// Delete trailing /.`
`2103`		`- sdkPath = sdkPath.map { $0.last == "/" ? String($0.dropLast()) : $0 }`
	`2103`	`+ sdkPath = sdkPath.map { $0.length > 1 && $0.last == "/" ? String($0.dropLast()) : $0 }`
`2104`	`2104`
`2105`	`2105`	`// Validate the SDK if we found one.`
`2106`	`2106`	`if let sdkPath = sdkPath {`