https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107660
--- Comment #2 from Tomoya Suzuki <t3suzuki at ucsd dot edu> --- I Sorry I didn't follow your bug report guidelines. After this, I investigated the cause by myself, and it seems that there is a difference in the output of the std::shuffle function. Even if the input and random number configurations of the shuffle function are the same, can the output differ depending on the gcc version?