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| author | Ondřej Bílka <neleai@seznam.cz> | 2013-10-25 19:16:08 +0200 |
|---|---|---|
| committer | Ondřej Bílka <neleai@seznam.cz> | 2013-10-25 19:17:58 +0200 |
| commit | 151659f6371ce39a488fd132a5c8ce5e3bba983c (patch) | |
| tree | f3a90009fd76631bb2419cfe912580afe071694c /manual/socket.texi | |
| parent | 10b0f26b1950f8d38a5846b80833564df3c5b582 (diff) | |
| download | glibc-151659f6371ce39a488fd132a5c8ce5e3bba983c.tar.gz glibc-151659f6371ce39a488fd132a5c8ce5e3bba983c.tar.xz glibc-151659f6371ce39a488fd132a5c8ce5e3bba983c.zip | |
Fix gethostbyname_r example. Fixes bug 2801.
Diffstat (limited to 'manual/socket.texi')
| -rw-r--r-- | manual/socket.texi | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/manual/socket.texi b/manual/socket.texi index 25c35c46b1..4c7e623b29 100644 --- a/manual/socket.texi +++ b/manual/socket.texi @@ -1307,23 +1307,25 @@ Here's a small example: struct hostent * gethostname (char *host) @{ - struct hostent hostbuf, *hp; + struct hostent *hostbuf, *hp; size_t hstbuflen; char *tmphstbuf; int res; int herr; + hostbuf = malloc (sizeof (struct hostent)); hstbuflen = 1024; - /* Allocate buffer, remember to free it to avoid memory leakage. */ tmphstbuf = malloc (hstbuflen); - while ((res = gethostbyname_r (host, &hostbuf, tmphstbuf, hstbuflen, + while ((res = gethostbyname_r (host, hostbuf, tmphstbuf, hstbuflen, &hp, &herr)) == ERANGE) @{ /* Enlarge the buffer. */ hstbuflen *= 2; tmphstbuf = realloc (tmphstbuf, hstbuflen); @} + + free (tmphstbuf); /* Check for errors. */ if (res || hp == NULL) return NULL; |