[YAML] Always double quote UTF-8 characters

llvm-svn: 321068

diff --git a/llvm/include/llvm/Support/YAMLTraits.h b/llvm/include/llvm/Support/YAMLTraits.h
index 83b097a199d6bdf32c3ae93401b19e3e5b17a625..3ee556d7533537c5edadc37ca38a0608f5d42abe 100644 (file)
--- a/llvm/include/llvm/Support/YAMLTraits.h
+++ b/llvm/include/llvm/Support/YAMLTraits.h
@@ -549,9 +549,9 @@ inline QuotingType needsQuotes(StringRef S) {
       // range.
       if (C <= 0x1F)
         return QuotingType::Double;
-      // C1 control block (0x80 - 0x9F) is excluded from the allowed character
-      // range.
-      if (C >= 0x80 && C <= 0x9F)
+
+      // Always double quote UTF-8.
+      if (C & 0x80 != 0)
         return QuotingType::Double;
 
       // The character is not safe, at least simple quoting needed.