[Bug debug/67482] dwarf2out.c sanitizer detects undefined behaviour negation of -9223372036854775808

[zeccav at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67482

--- Comment #3 from Vittorio Zecca <zeccav at gmail dot com> ---
I confirm I cannot reproduce it on 6.1.0 nor 7