Commit 79cbe508 authored by Yang Tse's avatar Yang Tse
Browse files

Test if type casting a 'signed int' to a 'signed long long' fails to do sign extension on x86_64.

parent 1c04aa54

lib/mprintf.c

+10 −1
Original line number Diff line number Diff line
@@ -325,6 +325,7 @@ static long dprintf_Pass1(const char *format, va_stack_t *vto, char **endpos, 
  int flags;

  long max_param=0;

  long i;

  int aux_signed_int;



  while(*fmt) {

    if(*fmt++ == '%') {
@@ -591,9 +592,17 @@ static long dprintf_Pass1(const char *format, va_stack_t *vto, char **endpos, 
          else if(vto[i].flags & FLAGS_UNSIGNED)

            vto[i].data.num.as_unsigned =

              (mp_uintmax_t)va_arg(arglist, unsigned int);

          else

          else {

            /*

            vto[i].data.num.as_signed =

              (mp_intmax_t)va_arg(arglist, int);

            */

            aux_signed_int = va_arg(arglist, int);

            if(sizeof(mp_intmax_t) > sizeof(long))

              vto[i].data.num.as_signed = (mp_intmax_t)aux_signed_int;

            else

              vto[i].data.num.as_signed = (long)aux_signed_int;

          }

        }

        break;