memcached_touch() crashes when expiration=-1 (ASCII only)

[Nicolas Noé]

The following snippet gives: Couldn't touch key: MEMORY ALLOCATION FAILURE

#include <libmemcached/memcached.h>
#include <stdio.h>
#include <string.h>

int main(int argc, char **argv) {
  //memcached_servers_parse (char *server_strings);
  memcached_server_st *servers = NULL;
  memcached_st *memc;
  memcached_return rc;
  char *key = "keystring";
  char *value = "keyvalue";

  char *retrieved_value;
  size_t value_length;
  uint32_t flags;

  time_t timeout = -1;

  memc = memcached_create(NULL);

  //rc = memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL, 1);

  servers = memcached_server_list_append(servers, "localhost", 11211, &rc);
  rc = memcached_server_push(memc, servers);

  if (rc == MEMCACHED_SUCCESS)
    fprintf(stderr, "Added server successfully\n");
  else
    fprintf(stderr, "Couldn't add server: %s\n", memcached_strerror(memc, rc));

  rc = memcached_set(memc, key, strlen(key), value, strlen(value), (time_t)0, (uint32_t)0);

  if (rc == MEMCACHED_SUCCESS)
    fprintf(stderr, "Key stored successfully\n");
  else
    fprintf(stderr, "Couldn't store key: %s\n", memcached_strerror(memc, rc));

  rc = memcached_touch(memc, key, strlen(key), timeout);

  if (rc == MEMCACHED_SUCCESS)
    fprintf(stderr, "Key touched successfully\n");
  else
    fprintf(stderr, "Couldn't touch key: %s\n", memcached_strerror(memc, rc));

  return 0;
}

If you uncomment the memcached_behavior_set() call to force it in binary mode, it works properly.