big refactor

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@649 ec762483-ff6d-05da-a07a-a48fb63a330f

1 files changed, 6 insertions, 0 deletions

diff --git a/decoder/cdec_ff.cc b/decoder/cdec_ff.cc
index 98d4711f..84ba19fa 100644
--- a/decoder/cdec_ff.cc
+++ b/decoder/cdec_ff.cc
@@ -13,6 +13,12 @@
 #include "ff_register.h"
 
 void register_feature_functions() {
+  static bool registered = false;
+  if (registered) {
+    assert(!"register_feature_functions() called twice!");
+  }
+  registered = true;
+
   //TODO: these are worthless example target FSA ffs.  remove later
   RegisterFsaImpl<SameFirstLetter>(true);
   RegisterFsaImpl<LongerThanPrev>(true);