[IFC] ASSERTION FAILED inlineItem.layoutBox().isInlineLevelBox() in I…

…nlineFormattingUtils::inlineItemWidth

https://bugs.webkit.org/show_bug.cgi?id=266387

Reviewed by Antti Koivisto.

Do not try to measure out-of-flow content while rebuilding the line due to "revert to last breaking position" type of content.

* LayoutTests/fast/inline/inline-content-with-out-of-flow-assert-expected.txt: Added.
* LayoutTests/fast/inline/inline-content-with-out-of-flow-assert.html: Added.
* Source/WebCore/layout/formattingContexts/inline/InlineLineBuilder.cpp:
(WebCore::Layout::LineBuilder::rebuildLineWithInlineContent):

Canonical link: https://commits.webkit.org/272031@main

LayoutTests/fast/inline/inline-content-with-out-of-flow-assert-expected.txt

@@ -0,0 +1,2 @@
+PASS if no crash or assert
+This should not assert.

LayoutTests/fast/inline/inline-content-with-out-of-flow-assert.html

@@ -0,0 +1,13 @@
+<style>
+div {
+  font-family: Monospace;
+  font-size: 10px;
+  width: 100px;
+}
+</style>
+PASS if no crash or assert
+<div>This <div style="position: absolute;"></div> should <span style="white-space: pre">not assert.</span></div>
+<script>
+if (window.testRunner)
+  testRunner.dumpAsText();
+</script>

Source/WebCore/layout/formattingContexts/inline/InlineLineBuilder.cpp

@@ -1154,7 +1154,8 @@ size_t LineBuilder::rebuildLineWithInlineContent(const InlineItemRange& layoutRa
             continue;
         }
         auto& style = isFirstFormattedLine() ? inlineItem.firstLineStyle() : inlineItem.style();
-        m_line.append(inlineItem, style, formattingContext().formattingUtils().inlineItemWidth(inlineItem, m_line.contentLogicalRight(), isFirstFormattedLine()));
+        auto inlineItemWidth = !inlineItem.isOpaque() ? formattingContext().formattingUtils().inlineItemWidth(inlineItem, m_line.contentLogicalRight(), isFirstFormattedLine()) : InlineLayoutUnit();
+        m_line.append(inlineItem, style, inlineItemWidth);
         ++numberOfInlineItemsOnLine;
         if (&inlineItem == &lastInlineItemToAdd)
             break;