diff --git a/runtime/internal/memory.d b/runtime/internal/memory.d
index 53d3ce9f..5fb4ab6c 100644
--- a/runtime/internal/memory.d
+++ b/runtime/internal/memory.d
@@ -196,11 +196,11 @@ private
     {
         extern(C)
         {
-            extern int _edata;
+            extern int _environ;
             extern int _end;
         }
 
-        alias _edata        Data_Start;
+        alias _environ      Data_Start;
         alias _end          Data_End;
     }
 
@@ -331,6 +331,8 @@ version(solaris)
         }
     }
 
+    debug (ProcMaps) extern (C) int printf(char*, ...);
+
     void parseDataProcMaps()
     {
         debug (ProcMaps) printf("initStaticDataPtrs()\n");
@@ -494,4 +496,4 @@ else
         }
     }
 }
-}
\ No newline at end of file
+}