doc/go1.16: pre-announce GODEBUG=x509ignoreCN=0 removal in Go 1.17

For #40700 Updates #24151 Change-Id: Id63dcaad238f7534bfce8902b8cb3efd8db5942d Reviewed-on: https://go-review.googlesource.com/c/go/+/266539 Trust: Filippo Valsorda <[email protected]> Trust: Katie Hockman <[email protected]> Reviewed-by: Katie Hockman <[email protected]>
golang · Dec 4, 2020 · 2c2980a · 2c2980a
1 parent 37a32a1
commit 2c2980a
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/doc/go1.16.html b/doc/go1.16.html
@@ -501,6 +501,13 @@ <h3 id="minor_library_changes">Minor changes to the library</h3>
 
 <dl id="crypto/x509"><dt><a href="/pkg/crypto/x509/">crypto/x509</a></dt>
   <dd>
+    <p>
+      The <code>GODEBUG=x509ignoreCN=0</code> flag will be removed in Go 1.17.
+      It enables the legacy behavior of treating the <code>CommonName</code>
+      field on X.509 certificates as a host name when no Subject Alternative
+      Names are present.
+    </p>
+
     <p><!-- CL 235078 -->
       <a href="/pkg/crypto/x509/#ParseCertificate">ParseCertificate</a> and
       <a href="/pkg/crypto/x509/#CreateCertificate">CreateCertificate</a> both