modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/execute/920501-1.c (about)

     1  /* { dg-require-effective-target untyped_assembly } */
     2  int s[2];
     3  x(){if(!s[0]){s[1+s[1]]=s[1];return 1;}}
     4  main(){s[0]=s[1]=0;if(x(0)!=1)abort();exit(0);}