https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107370
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- I get the following output from ubuntu 1804's gcc and the trunk of gcc from 20220808: ubuntu@ubuntu:~/src/upstream-gcc\# ~/upstream-gcc/bin/gcc t54.c -O2 ubuntu@ubuntu:~/src/upstream-gcc\# ./a.out 1.4142135623730950488 trunk gcc: .LC1: .word 325511829 .word -922176773 .word -429395012 .word 1073703433 ubuntu gcc: .LC0: .word 325511829 .word 3372790523 .word 3865572284 .word 1073703433 Both of these are the same, just unsigned vs signed output. As far as I can tell, this is not a GCC issue. It might be a binutils issue or a glibc issue with printf.