https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66152
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- That changed with r263511, which now treats the {0,1,2,3,4,5,6,7} initializer like "\0\1\2\3\4\5\6\7", so that means even GCC 8 expanded the latter this way.