https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107952
--- Comment #2 from Siddhesh Poyarekar <siddhesh at gcc dot gnu.org> --- The standard does not allow the nesting, but gcc supports it as an extension. The middle end does see the array as a flex array correctly, but tree-object-size doesn't seem to do the right thing consistently enough. Or rather, the current behaviour seems a bit mixed up, which is why I want to try and specify the behaviour for tree-object-size more clearly with all combinations of -fstrict-flex-array and arrays, i.e. nested or otherwise.
