@@ -1827,7 +1827,7 @@
 For the purpose of ranking implicit conversion sequences as described
 in~\ref{over.ics.rank}, the ambiguous conversion sequence is treated
 as a user-defined sequence that is indistinguishable from any
-other user-defined conversion sequence\footnote{The ambiguous conversion
+other user-defined conversion sequence\cprotect\footnote{The ambiguous conversion
 sequence is ranked with user-defined
 conversion sequences because multiple conversion sequences
 for an argument can exist only if they involve different
@@ -1842,20 +1842,17 @@
 conversion sequence for one of its parameters.
 Consider this example,
 
-\begin{ttfamily}
-\begin{tabbing}
-\hspace{2in}\=\kill%
-\indent class B;\\
-\indent class A \{ A (B\&);\};\\
-\indent class B \{ operator A (); \};\\
-\indent class C \{ C (B\&); \};\\
-\indent void f(A) \{ \}\\
-\indent void f(C) \{ \}\\
-\indent B b;\\
-\indent f(b);\>\textrm{// ambiguous because \tcode{b} $\to$ \tcode{C} via constructor and}\\
-\indent \>\textrm{// \tcode{b} $\to$ \tcode{A} via constructor or conversion function.}
-\end{tabbing}
-\end{ttfamily}
+\begin{codeblock}
+class B;
+class A { A (B&); };
+class B { operator A (); };
+class C { C (B&); };
+void f(A) { }
+void f(C) { }
+B b;
+f(b);  // ambiguous because \tcode{b} $\to$ \tcode{C} via constructor and
+       // \tcode{b} $\to$ \tcode{A} via constructor or conversion function.
+\end{codeblock}
 
 If it were not for this rule,
 \tcode{f(A)}
 
@@ -289,17 +289,16 @@
 \tcode{\#elif}
 directive)
 is \impldef{numeric values of character literals in \tcode{\#if}
-directives}.\footnote{Thus, the constant expression in the following
+directives}.\cprotect\footnote{Thus, the constant expression in the following
 \tcode{\#if}
 directive and
 \tcode{if}
 statement is not guaranteed to evaluate to the same value in these two
 contexts.
-\begin{tabbing}
-\hspace{.6in}\=\kill%
-\>\tcode{\#if 'z' - 'a' == 25}\\
-\>\tcode{if ('z' - 'a' == 25)}
-\end{tabbing}
+\begin{codeblock}
+#if 'z' - 'a' == 25
+if ('z' - 'a' == 25)
+\end{codeblock}
 }
 Also, whether a single-character character literal may have a negative
 value is \impldef{negative value of character literal in preprocessor}.
 
@@ -45,6 +45,7 @@
             plainpages=false
            ]{hyperref}
 \usepackage{memhfixc}     % fix interactions between hyperref and memoir
+\usepackage{cprotect} % support for listings inside footnotes
 
 \input{layout}
 \input{styles}