diff -r 0bf643a2ed034a1f8bd795eb2d11a8e5d0a0e656 -r 32e9f1cc7aae6092fe5045a9c78f4999948c5923 src/Sieving.cc
--- a/src/Sieving.cc	Wed Apr 17 23:13:42 2013 -0500
+++ b/src/Sieving.cc	Wed Apr 17 23:15:49 2013 -0500
@@ -806,6 +806,7 @@
  #ifdef DEBUG
   #warning "Initialize Sieve: MMX Sieve Image copy activated."
  #endif
+ unsigned int clobbered_int;
  // about using prefetchnta: it's not a pure MMX instruction, but a streaming extension;
  // also if the sieve image will fit into cache, "prefetchnta" is counterproductive.
   asm volatile(\