[clang] [C2y] Add octal prefixes, deprecate unprefixed octals (PR #131626)

[Aaron Ballman via cfe-commits]

================
@@ -176,7 +176,7 @@ <h2 id="c2y">C2y implementation status</h2>
     <tr>
       <td>Obsolete implicitly octal literals and add delimited escape sequences</td>
       <td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3353.htm">N3353</a></td>
-      <td class="none" align="center">No</td>
+      <td class="unreleased" align="center">Clang 21</td>
----------------
AaronBallman wrote:

Ah good point, I missed that.

https://github.com/llvm/llvm-project/pull/131626