When compiling GStreamer with the new libcheck 0.9.14 and running an older version of valgrind (like 3.7.0 included in Debian/wheezy) you may see complaints like the one below. The attached patch alleviates these by adding suppression. Another option is to upgrade to valgrind 3.10.0 (included in Debian/testing) which also removes the complaint, however there appears to be no way to require a specific valgrind version.

==10183== Syscall param timer_create(evp) points to uninitialised byte(s)
==10183==    at 0x6121DD2: timer_create@@GLIBC_2.3.3 (timer_create.c:82)
==10183==    by 0x4E43562: check_get_clockid (check.c:546)
==10183==    by 0x4E46AA4: tcase_run_tfun_fork (check_run.c:429)
==10183==    by 0x4E462DE: srunner_iterate_tcase_tfuns (check_run.c:190)
==10183==    by 0x4E466FD: srunner_run_tcase (check_run.c:330)
==10183==    by 0x4E461F3: srunner_iterate_suites (check_run.c:163)
==10183==    by 0x4E472CF: srunner_run (check_run.c:679)
==10183==    by 0x4E471B5: srunner_run_all (check_run.c:646)
==10183==    by 0x4E3BFE9: gst_check_run_suite (gstcheck.c:782)
==10183==    by 0x40D725: main (gstbuffer.c:885)
==10183==  Address 0x7fefff5c0 is on thread 1's stack
==10183== 
==10183== Syscall param timer_create(evp) points to uninitialised byte(s)
==10183==    at 0x6121DD2: timer_create@@GLIBC_2.3.3 (timer_create.c:82)
==10183==    by 0x4E46AB9: tcase_run_tfun_fork (check_run.c:429)
==10183==    by 0x4E462DE: srunner_iterate_tcase_tfuns (check_run.c:190)
==10183==    by 0x4E466FD: srunner_run_tcase (check_run.c:330)
==10183==    by 0x4E461F3: srunner_iterate_suites (check_run.c:163)
==10183==    by 0x4E472CF: srunner_run (check_run.c:679)
==10183==    by 0x4E471B5: srunner_run_all (check_run.c:646)
==10183==    by 0x4E3BFE9: gst_check_run_suite (gstcheck.c:782)
==10183==    by 0x40D725: main (gstbuffer.c:885)
==10183==  Address 0x7fefff5e0 is on thread 1's stack
==10183== 
==10205== Syscall param timer_create(evp) points to uninitialised byte(s)
==10205==    at 0x6121DD2: timer_create@@GLIBC_2.3.3 (timer_create.c:82)
==10205==    by 0x4E43562: check_get_clockid (check.c:546)
==10205==    by 0x4E469D8: tcase_run_tfun_fork (check_run.c:417)
==10205==    by 0x4E462DE: srunner_iterate_tcase_tfuns (check_run.c:190)
==10205==    by 0x4E466FD: srunner_run_tcase (check_run.c:330)
==10205==    by 0x4E461F3: srunner_iterate_suites (check_run.c:163)
==10205==    by 0x4E472CF: srunner_run (check_run.c:679)
==10205==    by 0x4E471B5: srunner_run_all (check_run.c:646)
==10205==    by 0x4E3BFE9: gst_check_run_suite (gstcheck.c:782)
==10205==    by 0x40D725: main (gstbuffer.c:885)
==10205==  Address 0x7fefff5c0 is on thread 1's stack