https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71203
--- Comment #12 from Harald Anlauf <anlauf at gmx dot de> --- The issues related to zero-length strings and zero-size arrays are fixed on trunk and 8-branch. Backport to 7-branch would require additional efforts, and as this PR is not about a regression, not done. The integer parts in comment#1 need further debugging. If somebody finds a related PR, this one might be closed as duplicate.
