https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71539
mednafen at sent dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mednafen at sent dot com
--- Comment #1 from mednafen at sent dot com ---
test.c:9:17: runtime error: signed integer overflow: 2 * 4611686018427387904
cannot be represented in type 'long int'
test.c:9:8: runtime error: signed integer overflow: 2 * -9223372036854775808
cannot be represented in type 'long int'
Refer to the C standard, and use -fwrapv
https://gcc.gnu.org/onlinedocs/gcc-5.3.0/gcc/Code-Gen-Options.html#index-fwrapv-2791
if you really need to write such code(or want a safety net against
unpredictable future optimizations that take advantage of such undefined
behavior).
