[glibc/release/2.34/master] gethosts: Return EAI_MEMORY on allocation failure

[Siddhesh Poyarekar <siddhesh@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cc4544ef8069a14c67a46b7e8e28eff1dc102050

commit cc4544ef8069a14c67a46b7e8e28eff1dc102050
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date:   Wed Mar 2 11:45:29 2022 +0530

    gethosts: Return EAI_MEMORY on allocation failure
    
    All other cases of failures due to lack of memory return EAI_MEMORY, so
    it seems wrong to return EAI_SYSTEM here.  The only reason
    convert_hostent_to_gaih_addrtuple could fail is on calloc failure.
    
    Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
    Reviewed-by: DJ Delorie <dj@redhat.com>
    (cherry picked from commit b587456c0e7b59dcfdbd2d44db000a3bc8244e57)

Diff:
---
 sysdeps/posix/getaddrinfo.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
index 1008f24736..37260d6e6f 100644
--- a/sysdeps/posix/getaddrinfo.c
+++ b/sysdeps/posix/getaddrinfo.c
@@ -303,13 +303,13 @@ gethosts (nss_gethostbyname3_r fct, int family, const char *name,
   else if (status == NSS_STATUS_SUCCESS)
     {
       if (!convert_hostent_to_gaih_addrtuple (req, family, &th, res))
-	return -EAI_SYSTEM;
+	return -EAI_MEMORY;
 
       if (localcanon != NULL && res->canon == NULL)
 	{
 	  char *canonbuf = __strdup (localcanon);
 	  if (canonbuf == NULL)
-	    return  -EAI_SYSTEM;
+	    return  -EAI_MEMORY;
 	  res->canon = canonbuf;
 	}
     }