https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96058
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> --- We have an array type of an incomplete type which should be impossible. Likewise a STRING_CST of array-of-struct type shouldn't exist either. You could instrument the LTO out-streaming code to detect this case and thus identify the problematic source TU.
