Description of problem:
there's a problem to build documentation for the apron package in fedora 24.  With doxygen 1.8.10, documentation for a certain operator% looks like this:

\subsubsection[{operator\%(const texpr1\+::builder \&a, const texpr1\+::builder \&b)}]{\setlength{\rightskip}{0pt plus 5cm}texpr1\+::builder operator\% (
\begin{DoxyParamCaption}
\item[{const texpr1\+::builder \&}]{a, }
\item[{const texpr1\+::builder \&}]{b}
\end{DoxyParamCaption}

That works fine. However, with 1.8.11, this is produced:

\subsubsection[{\texorpdfstring{operator\%(const texpr1\+::builder \&a, const texpr1\+::builder \&b)}{operator%(const texpr1::builder &a, const texpr1::builder &b)}}]{\setlength{\rightskip}{0pt plus 5cm}texpr1\+::builder operator\% (
\begin{DoxyParamCaption}
\item[{const texpr1\+::builder \&}]{a, }
\item[{const texpr1\+::builder \&}]{b}
\end{DoxyParamCaption}

The unescaped percent sign in the second argument to \texorpdfstring turns the rest of the line into a comment, leading to a LaTeX error.

Version-Release number of selected component (if applicable):
doxygen-1.8.11

How reproducible:
Always

Steps to Reproduce:
1. svn co svn://scm.gforge.inria.fr/svnroot/apron/apron/trunk apron
2. cd apron
3. make && make doc

Actual results:
Runaway argument?
{\texorpdfstring {operator\%(const texpr0\+::builder \&a, const texpr\ETC.
! Paragraph ended before \@sect was complete.
<to be read again> 
                   \par 
l.1954 
       
? 
! Emergency stop.
<to be read again> 
                   \par 
l.1954 
       
!  ==> Fatal error occurred, no output PDF file produced!


Expected results:
Successful build of the documentation.