https://bugs.winehq.org/show_bug.cgi?id=50800
--- Comment #14 from Priit priit@ww.ee --- Are you also using the mesa 21.x?
Yes, malloc() only happens after this commit. Forgot to mention before, but ... also added to the same bottle several winetricks things (.NET because it's needed for Hearthstone Deck Tracker to function; others for Hearthstone itself from legacy knowledge; maybe not needed anymore, but just in case):
winetricks dotnet472 winetricks corefonts winetricks nocrashdialog winetricks settings usetakefocus=disabled
winetricks.log:
w_workaround_wine_bug-34803 remove_mono remove_mono remove_mono remove_mono remove_mono remove_mono remove_mono remove_mono remove_mono remove_mono remove_mono remove_mono remove_mono remove_mono winxp dotnet40 remove_mono remove_mono remove_mono remove_mono remove_mono remove_mono winxp dotnet40 dotnet45 dotnet46 dotnet461 dotnet462 dotnet472 andale arial comicsans courier georgia impact times trebuchet verdana webdings corefonts nocrashdialog