1 /* { dg-do run } */ 2 /* { dg-options "-fsanitize=shift -w -std=c99" } */ 3 4 int main(void)5 main (void) 6 { 7 int a = -42; 8 a << 1; 9 } 10 /* { dg-output "left shift of negative value -42" } */ 11