gcc/testsuite/gcc.c-torture/compile/pr12578.c

/*  PR tree-optimization/12517  */

void trivial_regexp_p(int *s, int len)
{
    while (--len) {
	switch (*s++) {
	    case '\\':
		switch (*s++) {
		    case '|':
			;
		}
	}
    }
}