[PATCH] Promote NPCs used as arguments to variadic functions

[Richard Smith]

================
Comment at: test/CodeGenCXX/varargs.cpp:18-19
@@ -16,3 +17,4 @@
   void test() {
-    test1(0);
+    test1(0); // The zero gets implicitly widened.
+    test1(1);
   }
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The comment is a lie...

http://reviews.llvm.org/D5480