build: Go back to dropping __eprintf reference when building with Clang, see
comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121146 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/SearchForAddressOfSpecialSymbol.cpp b/lib/Support/SearchForAddressOfSpecialSymbol.cpp
index 51ba417..d638301 100644
--- a/lib/Support/SearchForAddressOfSpecialSymbol.cpp
+++ b/lib/Support/SearchForAddressOfSpecialSymbol.cpp
@@ -44,9 +44,14 @@
     EXPLICIT_SYMBOL(__umoddi3);
 
     // __eprintf is sometimes used for assert() handling on x86.
+    //
+    // FIXME: Currently disabled when using Clang, as we don't always have our
+    // runtime support libraries available.
+#ifndef __clang__
 #ifdef __i386__
     EXPLICIT_SYMBOL(__eprintf);
 #endif
+#endif
   }
 #endif