It was possible to end up with a dangling pointer in m_listStack.
This is now avoided by using QPointer and doing nullptr checks before
accessing any QTextList pointer stored there.
We have 2 specimens of garbage that caused crashes before; now they don't.
But only fuzz20450 triggered the dangling pointer in the list stack.
The crash caused by fuzz20580 was fixed by updating md4c from upstream:
4b0fc03077
Change-Id: I8e1eca23b281256a03aea0f55e9ae20f1bdd2a38
Reviewed-by: Robert Loehning <robert.loehning@qt.io>
Importer fixes:
- the first list item after a heading doesn't keep the heading font
- the first text fragment after a bullet is the bullet text, not a
separate paragraph
- detect continuation lines and append to the list item text
- detect continuation paragraphs and indent them properly
- indent nested list items properly
- add a test for QTextMarkdownImporter
Writer fixes:
- after bullet items, continuation lines and paragraphs are indented
- indentation of continuations isn't affected by checkboxes
- add extra newlines between list items in "loose" lists
- avoid writing triple newlines
- enhance the test for QTextMarkdownWriter
Change-Id: Ib1dda514832f6dc0cdad177aa9a423a7038ac8c6
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>
Shawn Rutledge