glibc/posix/bug-ga2.c
Stefan Liebler 29fddfc7df Use libnss_files.so for tests posix/bug-ga2 and resolv/tst-leaks2 [BZ #26821]
The tests posix/bug-ga2-mem and resolv/mtrace-tst-leaks2 are failing on
fedora 33 as mtrace reports memory leaks.

The /etc/nsswitch.conf differs between
Fedora 32: hosts:      files dns myhostname
Fedora 33: hosts:      files resolve [!UNAVAIL=return] myhostname dns

Therefore /lib64/libnss_resolve.so.2 (from systemd) and the dependencies
libgcc_s.so.1 and libpthread.so.0 are loaded.

Usually all malloc'ed resources from getaddrinfo / gethostbyname are freed
and the libraries are dlclose'd in nss/nsswitch.c:libc_freeres_fn (free_mem).
Unfortunately, /lib64/libnss_resolve.so.2 is marked with DF_1_NODELETE.
As this library is not unmapped, you'll see "Memory not freed".

Therefore those tests are now only relying on libnss_files.so by making
them test-container tests and providing the required configuration files.

By moving the tests to tests-container, those are now running with
"make check".  Therefore the mtrace part of the tests are also moved
from "make xcheck" to "make check".

bug-ga2.c is now using test-driver.c in order to support WAIT_FOR_DEBUGGER
environment variable.
2020-11-23 10:51:24 +01:00

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607 B
C

/* Test case by Sam Varshavchik <mrsam@courier-mta.com>. */
#include <mcheck.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <support/check.h>
static int
do_test (void)
{
struct addrinfo hints, *res;
int i, ret;
mtrace ();
for (i = 0; i < 100; i++)
{
memset (&hints, 0, sizeof (hints));
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
ret = getaddrinfo ("www.gnu.org", "http", &hints, &res);
if (ret)
FAIL_EXIT1 ("%s\n", gai_strerror (ret));
freeaddrinfo (res);
}
return 0;
}
#include <support/test-driver.c>