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[C99] Update documentation for scope of variables in loops; NFC (#154744)

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I tracked down the document which changed the way variables are handled
in for loops for C99, it was the same document that allowed mixing code
and declarations but the editor's report made it seem like the features
came from different papers.

This is an extension we backported to C89 but it's sufficiently distinct
in the tracking page so I've added it explicitly to the backported
features documentation.
This commit is contained in:
Aaron Ballman 2025-08-21 08:46:57 -04:00 committed by GitHub
parent f3508aa94a
commit a33e505c1a
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2 changed files with 2 additions and 6 deletions
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1
clang/docs/LanguageExtensions.rst
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@ -1763,6 +1763,7 @@ Hexadecimal floating constants (N308) C
Compound literals (N716) C99 C89, C++
``//`` comments (N644) C99 C89
Mixed declarations and code (N740) C99 C89
init-statement in for (N740) C99 C89
Variadic macros (N707) C99 C89
Empty macro arguments (N570) C99 C89
Trailing comma in enum declaration C99 C89

7
clang/www/c_status.html
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@ -1302,15 +1302,10 @@ conforms by not defining the <code>__STDC_IEC_559_COMPLEX__</code> macro.
<td class="full" align="center">Yes</td>
</tr>
<tr>
<td>mixed declarations and code</td>
<td>mixed declarations and code<br \>new block scopes for selection and iteration statements</td>
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n740.htm">N740</a></td>
<td class="full" align="center">Yes</td>
</tr>
<tr>
<td>new block scopes for selection and iteration statements</td>
<td>Unknown</td>
<td class="full" align="center">Yes</td>
</tr>
<tr>
<td>integer constant type rules</td>
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n629.htm">N629</a></td>