--- a/mojoshader.h	Tue Feb 22 02:51:33 2011 -0500
+++ b/mojoshader.h	Wed Feb 23 16:45:06 2011 -0500
@@ -1734,6 +1734,10 @@
                                     MOJOSHADER_malloc m, MOJOSHADER_free f,
                                     void *d);
 
+
+/* !!! FIXME: expose semantic analysis to the public API? */
+
+
 /*
  * Call this to dispose of AST parsing results when you are done with them.
  *  This will call the MOJOSHADER_free function you provided to

--- a/utils/mojoshader-compiler.c	Tue Feb 22 02:51:33 2011 -0500
+++ b/utils/mojoshader-compiler.c	Wed Feb 23 16:45:06 2011 -0500
@@ -171,8 +171,16 @@
             fprintf(io, "%s", dt->user.name);
             return;
 
+        // this should only appear if we did semantic analysis on the AST,
+        //  so we only print the return value here.
+        case MOJOSHADER_AST_DATATYPE_FUNCTION:
+            if (!dt->function.retval)
+                fprintf(io, "void");
+            else
+                print_ast_datatype(io, dt->function.retval);
+            return;
+
         //case MOJOSHADER_AST_DATATYPE_NONE:
-        //case MOJOSHADER_AST_DATATYPE_FUNCTION:
         default:
             assert(0 && "Unexpected datatype.");
             return;