diff --git a/graphics/openshadinglanguage/files/patch-src__testshade__testshade.cpp b/graphics/openshadinglanguage/files/patch-src__testshade__testshade.cpp
new file mode 100644
index 000000000000..840649eaebe3
--- /dev/null
+++ b/graphics/openshadinglanguage/files/patch-src__testshade__testshade.cpp
@@ -0,0 +1,11 @@
+--- src/testshade/testshade.cpp.orig	2014-09-23 05:01:22 UTC
++++ src/testshade/testshade.cpp
+@@ -733,7 +733,7 @@ test_shade (int argc, const char *argv[]
+         int num_layers = 0;
+         shadingsys->getattribute (shadergroup.get(), "num_layers", num_layers);
+         if (num_layers > 0) {
+-            std::vector<const char *> layers (num_layers, NULL);
++            std::vector<const char *> layers (size_t(num_layers), NULL);
+             shadingsys->getattribute (shadergroup.get(), "layer_names",
+                                       TypeDesc(TypeDesc::STRING, num_layers),
+                                       &layers[0]);