[expr.new] Extend example for new-expressions with zero size arrays

source/expressions.tex

@@ -5285,6 +5285,15 @@
 \grammarterm{expression} of a \grammarterm{noptr-new-declarator}), but
 \tcode{new float[5][n]} is ill-formed (because \tcode{n} is not a
 constant expression).
+Furthermore,
+\tcode{new float[0]} is well-formed
+(because \tcode{0} is the \grammarterm{expression}
+of a \grammarterm{noptr-new-declarator},
+where a value of zero results in the allocation of an array with no elements),
+but \tcode{new float[n][0]} is ill-formed
+(because \tcode{0} is the \grammarterm{constant-expression}
+of a \grammarterm{noptr-new-declarator},
+where only values greater than zero are allowed).
 \end{example}
 
 \pnum