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rptun: fix compile-time warning

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Fix this compile-time warning:

rptun/rptun.c:956:22: warning: '%lx' directive output may be truncated writing between 1 and 16 bytes into a region of size 14 [-Wformat-truncation=]
  956 |   snprintf(arg1, 16, "0x%" PRIxPTR, (uintptr_t)priv);
      |                      ^~~~~
rptun/rptun.c:956:25: note: format string is defined here
  956 |   snprintf(arg1, 16, "0x%" PRIxPTR, (uintptr_t)priv);
rptun/rptun.c:956:22: note: directive argument in the range [1, 18446744073709551615]
  956 |   snprintf(arg1, 16, "0x%" PRIxPTR, (uintptr_t)priv);
      |                      ^~~~~
rptun/rptun.c:956:3: note: 'snprintf' output between 4 and 19 bytes into a destination of size 16
  956 |   snprintf(arg1, 16, "0x%" PRIxPTR, (uintptr_t)priv);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
This commit is contained in:
Eero Nurkkala 2022-03-25 12:50:18 +02:00 committed by Xiang Xiao
parent 5198a56fe8
commit 1caf7d6f17
1 changed files with 3 additions and 3 deletions
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6
drivers/rptun/rptun.c
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@ -919,7 +919,7 @@ int rptun_initialize(FAR struct rptun_dev_s *dev)
struct metal_init_params params = METAL_INIT_DEFAULTS;
FAR struct rptun_priv_s *priv;
FAR char *argv[3];
char arg1[16];
char arg1[19];
char name[32];
int ret;
@ -946,14 +946,14 @@ int rptun_initialize(FAR struct rptun_dev_s *dev)
nxsem_init(&priv->sem, 0, RPTUN_IS_AUTOSTART(dev) ? 1 : 0);
nxsem_set_protocol(&priv->sem, SEM_PRIO_NONE);
snprintf(name, 32, "/dev/rptun/%s", RPTUN_GET_CPUNAME(dev));
snprintf(name, sizeof(name), "/dev/rptun/%s", RPTUN_GET_CPUNAME(dev));
ret = register_driver(name, &g_rptun_devops, 0222, priv);
if (ret < 0)
{
goto err_driver;
}
snprintf(arg1, 16, "0x%" PRIxPTR, (uintptr_t)priv);
snprintf(arg1, sizeof(arg1), "0x%" PRIxPTR, (uintptr_t)priv);
argv[0] = (void *)RPTUN_GET_CPUNAME(dev);
argv[1] = arg1;
argv[2] = NULL;