modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/920728-1.c (about) 1 typedef struct {int dims[0]; } *A; 2 3 f(unsigned long obj) 4 { 5 unsigned char y = obj >> 24; 6 y &= ~4; 7 8 if ((y==0)||(y!=251 )) 9 abort(); 10 11 if(((int)obj&7)!=7)return; 12 13 REST_OF_CODE_JUST_HERE_TO_TRIGGER_THE_BUG: 14 15 { 16 unsigned char t = obj >> 24; 17 if (!(t==0)&&(t<=0x03)) 18 return 0; 19 return ((A)(obj&0x00FFFFFFL))->dims[1]; 20 } 21 } 22 23 long g(){return 0xff000000L;} 24 main (){int x;f(g());exit(0);}