1 files changed, 19 insertions, 8 deletions
diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp
index c3ca8c8af5d..909c7dd00ac 100644
--- a/clang/lib/Basic/Targets.cpp
+++ b/clang/lib/Basic/Targets.cpp
@@ -158,14 +158,25 @@ static void getDarwinDefines(MacroBuilder &Builder, const LangOptions &Opts,
 
   // Set the appropriate OS version define.
   if (Triple.isiOS()) {
-    assert(Maj < 10 && Min < 100 && Rev < 100 && "Invalid version!");
-    char Str[6];
-    Str[0] = '0' + Maj;
-    Str[1] = '0' + (Min / 10);
-    Str[2] = '0' + (Min % 10);
-    Str[3] = '0' + (Rev / 10);
-    Str[4] = '0' + (Rev % 10);
-    Str[5] = '\0';
+    assert(Maj < 100 && Min < 100 && Rev < 100 && "Invalid version!");
+    char Str[7];
+    if (Maj < 10) {
+      Str[0] = '0' + Maj;
+      Str[1] = '0' + (Min / 10);
+      Str[2] = '0' + (Min % 10);
+      Str[3] = '0' + (Rev / 10);
+      Str[4] = '0' + (Rev % 10);
+      Str[5] = '\0';
+    } else {
+      // Handle versions >= 10.
+      Str[0] = '0' + (Maj / 10);
+      Str[1] = '0' + (Maj % 10);
+      Str[2] = '0' + (Min / 10);
+      Str[3] = '0' + (Min % 10);
+      Str[4] = '0' + (Rev / 10);
+      Str[5] = '0' + (Rev % 10);
+      Str[6] = '\0';
+    }
     if (Triple.isTvOS())
       Builder.defineMacro("__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__", Str);
     else