From 394b32e88b5a510e969c380973467f87b4a3c437 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emilio=20Cobos=20=C3=81lvarez?= <emilio@crisal.io>
Date: Sat, 22 Aug 2026 02:46:40 +0000
Subject: [PATCH] Don't stretch with indefinite block-size in
 GenerateFlexItemsForChild.

The key here is not so much the fact that we don't use Stretch() (it
wouldn't get used anyhow), but that it causes us to call
ResolveStretchedCrossSize() below, even if the resulting cross-size ends
up being non-indefinite.

Differential Revision: https://phabricator.services.mozilla.com/D320407

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=2065425
gecko-commit: 4c0d2d018641238226e1db60c98426158ec84750
gecko-commit-git: 6f1a348e95a4accc0825a016600c9fd3d8f92547
gecko-reviewers: layout-reviewers, dshin
---
 css/css-flexbox/flex-basis-014.html | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/css/css-flexbox/flex-basis-014.html b/css/css-flexbox/flex-basis-014.html
index b1bc2aedaccf19..6453bac595bc3b 100644
--- a/css/css-flexbox/flex-basis-014.html
+++ b/css/css-flexbox/flex-basis-014.html
@@ -71,6 +71,17 @@
   </div>
 </div>
 
+<div style="display: flex; flex-direction: column; width: 100px">
+  <div class="item" style="display: flex; flex: 1 1 0%; flex-direction: row; background: red;"
+       data-expected-width="100" data-expected-height="100">
+    <div class="item" style="flex: 1 1 0%; aspect-ratio: 1 / 1; background: red; position: relative;"
+                      data-expected-width="100" data-expected-height="100">
+      <div class="item" style="position: absolute; inset: 0; background:
+                  green"></div>
+    </div>
+  </div>
+</div>
+
 <div id="log"></div>
 
 <script src="/resources/testharness.js"></script>