[C] Erreur memoire (valgrind)

Bonjour,

Je suis en train de recoder un shell en C.
Je viens de terminer les alias, cela dit j'ai un probleme lorsque je lance valgrind.

Il me fait :
==1669== Conditional jump or move depends on uninitialised value(s)
==1669== at 0x8048B34: my_strcmp (in ./mysh)
==1669== by 0x8048997: alias (in ./mysh)
==1669== by 0x8049504: pre_command (in ./mysh)
==1669== by 0x8048884: mishi_runner (in ./mysh)
==1669==
==1669== Conditional jump or move depends on uninitialised value(s)
==1669== at 0x8048A14: alias (in ./mysh)
==1669== by 0x8049504: pre_command (in ./mysh)
==1669== by 0x8048884: mishi_runner (in ./mysh)
==1669== by 0x8048910: main (in ./mysh)

voici les bouts de code concernes :

func pre-command

void    pre_command(char *str)
{
  if (str[0] != 10)
    select_command(alias(str));
  else
    select_command(str);
}

func alias

char    *alias(char *alias)
{
  char  *command;
  int   fd;
  char  *buf;
  int   count;
  int   count2;

  buf = xmalloc(sizeof(*buf) * SMAX);
  command = xmalloc(sizeof(*command) * 32);
  fd = xopen(".mishirc", O_RDONLY);
  xread(fd, buf, SMAX);
  count = 0;
  while (buf[count] != 0)
    {
      if (my_strcmp(buf, "alias ", count, 0, 6) == 1
          && my_strcmp(buf, alias, count + 6, 0, my_strlen(alias, 0, 10)) == 1)

func my_strcmp

int     my_strcmp(char *str, char *str2, int count, int count2, int end)
{
  int   res;

  res = 1;
  while (end != 0)
    {
      if (str[count] != str2[count2])
        res = 0;
      count++;
      count2++;
      end--;
    }
  return (res);
}

Euh voili voilou , je ne comprend pas du tout l'erreur de Valgrind car toutes les variables qui se baladent ont ete initialise... non ?

Mici