It happens in any place where it's possible to use format strings; e.g., in Writer's Date fields. These steps use Calc as an example. 0. Use DBGUTIL build. 1. In a Calc document, open Cell Format dialog. 2. Start typing the format string MMMM"" Assertion is failed as soon as the last doublequote is typed -> crash.
https://gerrit.libreoffice.org/c/core/+/117723
Created attachment 173143 [details] A test document failing in current dbgutil builds
Mike Kaganski committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/9430eef53b89bce2e43258d5c4533d655fa80453 tdf#143032: Check if the literal is empty It will be available in 7.3.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.