[stdlib] added ascii label to UInt8 UnicodeScalar constructor

fixes rdar://problem/18509195 Swift SVN r25211
apple · Feb 12, 2015 · 26ee4c3 · 26ee4c3
1 parent 59bb06b
commit 26ee4c3
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Showing 2 changed files with 5 additions and 5 deletions.
diff --git a/stdlib/core/UnicodeScalar.swift b/stdlib/core/UnicodeScalar.swift
@@ -244,10 +244,10 @@ extension UnicodeScalar {
 extension UInt8 {
   /// Construct with value `v.value`.
   ///
-  /// Requires: `v.value` can be represented as UInt8.
-  public init(_ v : UnicodeScalar) {
-    _precondition(v.value <= UInt32(UInt8.max),
-        "Code point value does not fit into UInt8")
+  /// Requires: `v.value` can be represented as ASCII (0..<128).
+  public init(ascii v : UnicodeScalar) {
+    _precondition(v.value < 128,
+        "Code point value does not fit into ASCII")
     self = UInt8(v.value)
   }
 }

diff --git a/test/1_stdlib/PrimitiveDataTypes.swift b/test/1_stdlib/PrimitiveDataTypes.swift
@@ -4,7 +4,7 @@
 
 var CharA: UnicodeScalar = "A" // 65 in decimal.
 
-println(UInt8(CharA)) // CHECK: {{^65$}}
+println(UInt8(ascii: CharA)) // CHECK: {{^65$}}
 println(UInt32(CharA)) // CHECK: {{^65$}}
 println(UInt64(CharA)) // CHECK: {{^65$}}