1184252 - img as a flex item shouldn't transfer its min-height when resolving "min-width:auto"

Status: RESOLVED DUPLICATE of bug 1055354

(Core :: Layout, defect)

Description

[Daniel Holbert [:dholbert]]

Attachment: testcase 1

STR:
 1. Load attached testcase, with an image inside of a skinny flex container.

ACTUAL RESULTS:
 Image is 10px wide (and 50px tall).

EXPECTED RESULTS:
 Image should be 50px wide (and 50px tall).


NOTES:
Our "min-width:auto" (or "min-height:auto") code is based on some slightly-outdated spec text.

In particular, this comment...
http://mxr.mozilla.org/mozilla-central/source/layout/generic/nsFlexContainerFrame.cpp#1197
...describes some code below it, which transfers "min-height" (which defaults to 0) directly through to produce "min-width:0", per my interpretation of some old, vague spec text described in this message:
 http://lists.w3.org/Archives/Public/www-style/2014Jul/0053.html

(The old spec text was "[...]calculated from the aspect ratio and any definite size constraints in the opposite dimension". Link:
https://hg.csswg.org/drafts/annotate/bd6e4c8effaf/css-flexbox/Overview.bs#l895 )

Anyway, this text has gone through several rewritings since then, and it now is clear that "min-height" shouldn't directly be transferred through like this.

Comment 1

[Daniel Holbert [:dholbert]]

Actually, it looks like this is the same as bug 1055354. I'll dupe over there & post the testcase on that bug.