doc: Add explanation of zero-length array example

gcc/ChangeLog:

	* doc/extend.texi (Zero Length): Describe example.

diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index ac476801ed84dcbd1e714fde9288ba394021177b..e426a2eb7d81fed7ab838d931aaa71e3e56579df 100644 (file)
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -1705,6 +1705,9 @@ struct line *thisline = (struct line *)
 thisline->length = this_length;
 @end smallexample
 
+In this example, @code{thisline->contents} is an array of @code{char} that
+can hold up to @code{thisline->length} bytes.
+
 Although the size of a zero-length array is zero, an array member of
 this kind may increase the size of the enclosing type as a result of tail
 padding.  The offset of a zero-length array member from the beginning