It fixes the build issue below introduced by e3960d1c57 (Add
mallinfo2 function that support sizes >= 4GB). It moves the
__MALLOC_DEPRECATED to the usual place for function attributes:
In file included from ../include/malloc.h:3,
from ../sysdeps/x86_64/multiarch/../../../test-skeleton.c:31,
from ../sysdeps/x86_64/multiarch/test-multiarch.c:96:
../malloc/malloc.h:118:1: error: empty declaration [-Werror]
118 | __MALLOC_DEPRECATED;
It also adds the required deprecated warning suppression on the tests.
Checked on x86_64-linux-gnu.
This patch increases timeouts on three tests I observed timing out on
slow systems.
* malloc/tst-malloc-tcache-leak.c (TIMEOUT): Define to 50.
* posix/tst-glob-tilde.c (TIMEOUT): Define to 200.
* resolv/tst-resolv-res_ninit.c (TIMEOUT): Define to 50.
The malloc tcache added in 2.26 will leak all of the elements remaining
in the cache and the cache structure itself when a thread exits. The
defect is that we do not set tcache_shutting_down early enough, and the
thread simply recreates the tcache and places the elements back onto a
new tcache which is subsequently lost as the thread exits (unfreed
memory). The fix is relatively simple, move the setting of
tcache_shutting_down earlier in tcache_thread_freeres. We add a test
case which uses mallinfo and some heuristics to look for unaccounted for
memory usage between the start and end of a thread start/join loop. It
is very reliable at detecting that there is a leak given the number of
iterations. Without the fix the test will consume 122MiB of leaked
memory.
Adhemerval Zanella
Joseph Myers
Paul Eggert
Carlos O'Donell