https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114494
--- Comment #3 from Akihiko Odaki <akihiko.odaki at daynix dot com> --- (In reply to Andrew Pinski from comment #2) > Note the minimized testcase seems to be a real issue. hlen can either be 1 > (the only value that works) or more than 1. Below is the the error message for the minimized testcase: <stdin>: In function 'rtl8139_cplus_transmit_one': <stdin>:23:5: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=] <stdin>:4:11: note: at offset 1 into destination object 'ip_ver_len' of size 1 It does not seem to care if hlen == 1 or not.
