__nih_[abort_msg|free|malloc|realloc] symbols missversioned

During build, the following is seen in the changelog.

dpkg-gensymbols: warning: some new symbols appeared in the symbols file: see diff output below
dpkg-gensymbols: warning: some symbols or patterns disappeared in the symbols file: see diff output below
dpkg-gensymbols: warning: debian/libnih1/DEBIAN/symbols doesn't match completely debian/libnih1.symbols
--- debian/libnih1.symbols (libnih1_1.0.3-4ubuntu15_amd64)
+++ dpkg-gensymbols1G35K3 2013-01-08 14:48:28.391563483 +0000
@@ -1,3 +1,8 @@
 libnih.so.1 libnih1 #MINVER#
+ LIBNIH_1.0.1@LIBNIH_1.0.1 1.0.3-4ubuntu15
  (symver|optional)LIBNIH_1_0 1.0.0
- __nih_*@LIBNIH_1.0.1 1.0.1
+#MISSING: 1.0.3-4ubuntu15# __nih_*@LIBNIH_1.0.1 1.0.1
+ __nih_abort_msg@LIBNIH_1.0.1 1.0.3-4ubuntu15
+ __nih_free@LIBNIH_1.0.1 1.0.3-4ubuntu15
+ __nih_malloc@LIBNIH_1.0.1 1.0.3-4ubuntu15
+ __nih_realloc@LIBNIH_1.0.1 1.0.3-4ubuntu15

I am not sure if ./nih/libnih.ver or ./debian/libnih1.symbols or both have discrepancies.