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-rw-r--r--sysdeps/unix/sysv/linux/clock_getres.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/clock_getres.c b/sysdeps/unix/sysv/linux/clock_getres.c
index d560cd7c48..a9edec93e6 100644
--- a/sysdeps/unix/sysv/linux/clock_getres.c
+++ b/sysdeps/unix/sysv/linux/clock_getres.c
@@ -56,7 +56,7 @@ __clock_getres64 (clockid_t clock_id, struct __timespec64 *res)
 # else
   r = INLINE_SYSCALL_CALL (clock_getres, clock_id, &ts32);
 # endif
-  if (r == 0)
+  if (r == 0 && res != NULL)
     *res = valid_timespec_to_timespec64 (ts32);
 #endif