Rich's feedback

*** 10,24 ****
   */
  
  // Is long double fp80?  (Only x87 extended double has 64-bit mantissa)
  #define LDBL_FP80 (__LDBL_MANT_DIG__ == 64)
  
- #include <sysdemangle.h>
  #include <sys/debug.h>
  #include <string.h>
  #include <stdlib.h>
  #include <errno.h>
  
  /*
   * My masochism only goes so far -- leave the mangled and unmangled strings
   * as is, even if they go past 80 columns wide.
   */
--- 10,24 ----
   */
  
  // Is long double fp80?  (Only x87 extended double has 64-bit mantissa)
  #define LDBL_FP80 (__LDBL_MANT_DIG__ == 64)
  
  #include <sys/debug.h>
  #include <string.h>
  #include <stdlib.h>
  #include <errno.h>
+ #include <demangle-sys.h>
  
  /*
   * My masochism only goes so far -- leave the mangled and unmangled strings
   * as is, even if they go past 80 columns wide.
   */