The next step from my side should be clang installation and debugging this patch there. But it can happen not very soon.
It happened sooner than I expected. I've got Clang 11 from winlibs.com (it uses libstdc++, unfortunately libc++ is not available here). It compiles LyX on Windows without any problems and the opening of the recent files doesn't crash. So the problem is definitely in libc++, as Jean-Marc suspected from the start.
Yuriy -- lyx-devel mailing list lyx-devel@lists.lyx.org http://lists.lyx.org/mailman/listinfo/lyx-devel