For instance, this example:
</p>

<pre>
if n%2 == 1 {
	goto L1
}
for n &gt; 0 {
	f()
	n--
L1:
	f()
	n--
}
</pre>

<p>
is erroneous because the label <code>L1</code> is inside
the "for" statement's block but the <code>goto</code> is not.
</p>

	// limit (8KB), we stop growing the source string once the limit
	// is reached and keep reusing the same source string - that
	// should therefore be always resident in the L1 cache - until we
	// have completed the construction of the result.
	// This yields significant speedups (up to +100%) in cases where
	// the result length is large (roughly, over L2 cache size).
	const chunkLimit = 8 * 1024

For instance, this example:
</p>

<pre>
if n%2 == 1 {
	goto L1
}
for n &gt; 0 {
	f()
	n--
L1:
	f()
	n--
}
</pre>

<p>
is erroneous because the label <code>L1</code> is inside
the "for" statement's block but the <code>goto</code> is not.
</p>