1 files changed, 2 insertions, 0 deletions
diff --git a/slang.h b/slang.h
index 162787811..d47617edf 100644
--- a/slang.h
+++ b/slang.h
@@ -857,6 +857,8 @@ extern "C"
 #define SLANG_E_INTERNAL_FAIL               SLANG_MAKE_CORE_ERROR(6)
     //! Could not complete because some underlying feature (hardware or software) was not available 
 #define SLANG_E_NOT_AVAILABLE               SLANG_MAKE_CORE_ERROR(7)
+        //! Could not complete because the operation times out. 
+#define SLANG_E_TIME_OUT                    SLANG_MAKE_CORE_ERROR(8)
 
     /** A "Universally Unique Identifier" (UUID)