Return null InlineBoxPosition if no last text box.

This patch fixes the crash bug on Android. Bug: 831057 Change-Id: I94c6a893aad63894609eb34a78bba095596555d6 Reviewed-on: https://chromium-review.googlesource.com/1005636 Reviewed-by: Xiaocheng Hu <[email protected]> Reviewed-by: Yoichi Osato <[email protected]> Commit-Queue: Yoichi Osato <[email protected]> Cr-Original-Commit-Position: refs/heads/master@{#550563}(cherry picked from commit ab8610e) Reviewed-on: https://chromium-review.googlesource.com/1013878 Cr-Commit-Position: refs/branch-heads/3396@{#53} Cr-Branched-From: 9ef2aa8-refs/heads/master@{#550428}
nwjs · Apr 17, 2018 · 6615906 · 6615906
1 parent e801fae
commit 6615906
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/third_party/blink/renderer/core/editing/local_caret_rect.cc b/third_party/blink/renderer/core/editing/local_caret_rect.cc
@@ -79,6 +79,8 @@ InlineBoxPosition NextLinePositionOf(
   const LayoutText& layout_text =
       ToLayoutTextOrDie(*position.AnchorNode()->GetLayoutObject());
   InlineTextBox* const last = layout_text.LastTextBox();
+  if (!last)
+    return InlineBoxPosition();
   const RootInlineBox& root = last->Root();
   const RootInlineBox* const next_root = root.NextRootBox();
   if (!next_root)