1  /* { dg-do compile } */
       2  /* { dg-require-effective-target arm_thumb2_ok } */
       3  /* { dg-options "-mthumb -Os" }  */
       4  /* { dg-final { scan-assembler "push\t.*r8" } } */
       5  /* { dg-final { scan-assembler-not "push\t*r3" } } */
       6  
       7  extern int hist_verify;
       8  extern char *pre_process_line (char*);
       9  extern char* savestring1 (char*, char*, int, int);
      10  extern char* str_cpy (char*, char*);
      11  extern int str_len (char*);
      12  extern char* x_malloc (int);
      13  #define savestring(x) (char *)str_cpy (x_malloc (1 + str_len (x)), (x))
      14  
      15  char *
      16  history_expand_line_internal (char* line)
      17  {
      18    char *new_line;
      19    int old_verify;
      20  
      21    old_verify = hist_verify;
      22    hist_verify = 0;
      23    new_line = pre_process_line (line);
      24    hist_verify = old_verify;
      25    /* Two tail calls here, but r3 is used to pass values.  */
      26    return (new_line == line) ? savestring (line) : 
      27      savestring1 (new_line, line, 0, old_verify+1);
      28  }