fix memory corruption in old GCC
This typo introduced memory corruption when __builtin_add_overflow is not available but uint128_t is. GCC before 5 are one of such situatins.
See also https://rubyci.org/logs/rubyci.s3.amazonaws.com/opensuseleap/ruby-master/log/20191009T120004Z.log.html.gz
Added by shyouhei (Shyouhei Urabe) over 4 years ago
fix memory corruption in old GCC
This typo introduced memory corruption when __builtin_add_overflow
is not available but uint128_t is. GCC before 5 are one of such
situatins.
See also https://rubyci.org/logs/rubyci.s3.amazonaws.com/opensuseleap/ruby-master/log/20191009T120004Z.log.html.gz