doc/structures.tex: Fix section label.

diff --git a/doc/structures.tex b/doc/structures.tex
index 1d93b3d..a7be325 100644 (file)
--- a/doc/structures.tex
+++ b/doc/structures.tex
@@ -533,7 +533,7 @@ list.
                    @<type>_n @<arg>_n, va_list sod__ap);
 \end{prog}
 
-\subsection{Additional definitions} \label{sec:structures.additional}
+\subsection{Additional definitions} \label{sec:structures.layout.additional}
 
 In addition to the instance and vtable structures described above, the
 following definitions are made for each class $C$.