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libs/netdb: add sanity check to avoid null pointer reference

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Signed-off-by: chao an <anchao@xiaomi.com>
This commit is contained in:
chao an 2023-01-30 16:26:32 +08:00 committed by Xiang Xiao
parent 6f2f62f4ce
commit fa63da22ae
1 changed files with 4 additions and 1 deletions
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3
libs/libc/netdb/lib_gethostentbynamer.c
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@ -736,8 +736,11 @@ int gethostentbyname_r(FAR const char *name,
return OK;
}
else if ((flags & AI_NUMERICHOST) != 0)
{
if (h_errnop)
{
*h_errnop = EAI_NONAME;
}
return ERROR;
}