Created attachment 1308740 [details]
preprocessed source

# gcc -xc - <<EOF
#include <stdio.h>
int z[] = {};
int main(int argc, char *argv[]) { printf("%d\n", *(z + 1)); }
EOF
> <stdin>: In function ‘main’:
> <stdin>:3:36: internal compiler error: in size_binop_loc, at fold-const.c:1767
> Please submit a full bug report,
> with preprocessed source if appropriate

# rpm -q gcc
> gcc-7.1.1-6.fc27.x86_64