compiler: Work around a HLSL compiler aliasing opt bug.

BUG=angleproject:1448

Change-Id: I7d5bcbd100069152cea0cb03bc4fa6af1044460b
Reviewed-on: https://chromium-review.googlesource.com/376020
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/compiler/translator/InitializeVariables.h b/src/compiler/translator/InitializeVariables.h
index f826032..dce1083 100644
--- a/src/compiler/translator/InitializeVariables.h
+++ b/src/compiler/translator/InitializeVariables.h
@@ -13,6 +13,7 @@
 
 typedef std::vector<sh::ShaderVariable> InitVariableList;
 
+// This function cannot currently initialize structures containing arrays for an ESSL 1.00 backend.
 void InitializeVariables(TIntermNode *root, const InitVariableList &vars);
 
 #endif  // COMPILER_TRANSLATOR_INITIALIZEVARIABLES_H_