--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/sign/sign.c	Thu Mar 19 22:24:28 2015 +0100
@@ -0,0 +1,79 @@
+/*
+
+ Package: dyncall
+ Library: test
+ File: test/sign/sign.c
+ Description: 
+ License:
+
+   Copyright (c) 2011-2015 Daniel Adler <dadler@uni-goettingen.de>,
+                           Tassilo Philipp <tphilipp@potion-studios.com>
+
+   Permission to use, copy, modify, and distribute this software for any
+   purpose with or without fee is hereby granted, provided that the above
+   copyright notice and this permission notice appear in all copies.
+
+   THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+   WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+   MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+   ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+*/
+
+
+#include "dyncall.h"
+#include "../common/platformInit.h"
+
+// This program demonstrates the need for 'unsigned' integers and the
+// ability to implement zero/sign extensions for small integers.
+// This test program indicates failure on powerpc 32-bit with
+// compiler optimizations enabled (e.g. '-O2' compilation flags).
+//
+// A fix to be incorporated in the API is also given.
+//
+
+int add1s(unsigned short x) { return x + 1; }
+
+// API BUGFIX:
+#define dcArgUShort(vm,x) dcArgInt(vm,(int)(unsigned int)(x))
+
+// OLD TEST: int add1(unsigned char x) { return x + 1; }
+
+int main(int argc, char* argv[])
+{
+  DCCallVM* vm;
+  int result;
+  int total;
+  vm = dcNewCallVM(4096);
+  dcReset(vm);
+
+  dcArgShort(vm, 0xFFFF );
+  result = dcCallInt( vm, &add1s );
+  total = (result == 0x10000);
+  printf("result: sign: %d\n", total); 
+ 
+  if (!total) {
+    //
+    // TEST BUGFIX: use instead..
+    //
+    dcReset(vm);
+    dcArgUShort( vm, 0xFFFF );
+    result = dcCallInt( vm, &add1s );
+    total = (result == 0x10000);
+    printf("result: sign (bugfix): %d\n", total); 
+  }
+  
+  // result = dcCallInt( vm, &add1s );
+  // total = (result == 0x10000);
+  
+  // OLD TEST: updated to using 'short'
+  // dcArgChar( vm, (char) 255 );
+  // result = dcCallInt( vm, &add1 );
+  // total = (result == 256);
+  
+  // printf("result: sign: %d\n", total); 
+  return 0;
+}