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utils: Limit the scope of the variable max

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in g_get_host_name(), and avoid an unused-variable warning when
_SC_HOST_NAME_MAX is not defined.
This commit is contained in:
Peter Bloomfield 2020-09-22 16:14:21 -04:00
parent 298b712b27
commit e64293d56c
1 changed files with 10 additions and 7 deletions
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17
glib/gutils.c
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@ -982,7 +982,6 @@ g_get_host_name (void)
gchar *utmp;
#ifndef G_OS_WIN32
glong max;
gsize size;
/* The number 256 * 256 is taken from the value of _POSIX_HOST_NAME_MAX,
* which is 255. Since we use _POSIX_HOST_NAME_MAX + 1 (= 256) in the
@ -994,15 +993,19 @@ g_get_host_name (void)
gchar *tmp;
#ifdef _SC_HOST_NAME_MAX
max = sysconf (_SC_HOST_NAME_MAX);
if (max > 0 && (gsize) max <= G_MAXSIZE - 1)
size = (gsize) max + 1;
else
{
glong max;
max = sysconf (_SC_HOST_NAME_MAX);
if (max > 0 && (gsize) max <= G_MAXSIZE - 1)
size = (gsize) max + 1;
else
#ifdef HOST_NAME_MAX
size = HOST_NAME_MAX + 1;
size = HOST_NAME_MAX + 1;
#else
size = _POSIX_HOST_NAME_MAX + 1;
size = _POSIX_HOST_NAME_MAX + 1;
#endif /* HOST_NAME_MAX */
}
#else
/* Fallback to some reasonable value */
size = 256;