diff --git a/tests/headers/posix/sys_msg_h.c b/tests/headers/posix/sys_msg_h.c
index b908188..b02cd47 100644
--- a/tests/headers/posix/sys_msg_h.c
+++ b/tests/headers/posix/sys_msg_h.c
@@ -26,6 +26,8 @@
  * SUCH DAMAGE.
  */
 
+#if defined(__BIONIC__)
+
 #include <sys/msg.h>
 
 #include "header_checks.h"
@@ -42,9 +44,16 @@
   STRUCT_MEMBER(struct msqid_ds, msglen_t, msg_qbytes);
   STRUCT_MEMBER(struct msqid_ds, pid_t, msg_lspid);
   STRUCT_MEMBER(struct msqid_ds, pid_t, msg_lrpid);
+#if defined(__LP64__)
   STRUCT_MEMBER(struct msqid_ds, time_t, msg_stime);
   STRUCT_MEMBER(struct msqid_ds, time_t, msg_rtime);
   STRUCT_MEMBER(struct msqid_ds, time_t, msg_ctime);
+#else
+  // Starting at kernel v4.19, 32 bit changed these to unsigned values.
+  STRUCT_MEMBER(struct msqid_ds, unsigned long, msg_stime);
+  STRUCT_MEMBER(struct msqid_ds, unsigned long, msg_rtime);
+  STRUCT_MEMBER(struct msqid_ds, unsigned long, msg_ctime);
+#endif
 
   TYPE(pid_t);
   TYPE(size_t);
@@ -56,3 +65,4 @@
   FUNCTION(msgrcv, ssize_t (*f)(int, void*, size_t, long, int));
   FUNCTION(msgsnd, int (*f)(int, const void*, size_t, int));
 }
+#endif
diff --git a/tests/headers/posix/sys_sem_h.c b/tests/headers/posix/sys_sem_h.c
index 1b1b16d..49b236f 100644
--- a/tests/headers/posix/sys_sem_h.c
+++ b/tests/headers/posix/sys_sem_h.c
@@ -26,6 +26,8 @@
  * SUCH DAMAGE.
  */
 
+#if defined(__BIONIC__)
+
 #include <sys/sem.h>
 
 #include "header_checks.h"
@@ -48,8 +50,14 @@
 #else
   STRUCT_MEMBER(struct semid_ds, unsigned short, sem_nsems);
 #endif
+#if defined(__LP64__)
   STRUCT_MEMBER(struct semid_ds, time_t, sem_otime);
   STRUCT_MEMBER(struct semid_ds, time_t, sem_ctime);
+#else
+  // Starting at kernel v4.19, 32 bit changed these to unsigned values.
+  STRUCT_MEMBER(struct semid_ds, unsigned long, sem_otime);
+  STRUCT_MEMBER(struct semid_ds, unsigned long, sem_ctime);
+#endif
 
   TYPE(pid_t);
   TYPE(size_t);
@@ -64,3 +72,5 @@
   FUNCTION(semget, int (*f)(key_t, int, int));
   FUNCTION(semop, int (*f)(int, struct sembuf*, size_t));
 }
+
+#endif
diff --git a/tests/headers/posix/sys_shm_h.c b/tests/headers/posix/sys_shm_h.c
index 4ecd6d3..03d6815 100644
--- a/tests/headers/posix/sys_shm_h.c
+++ b/tests/headers/posix/sys_shm_h.c
@@ -26,6 +26,8 @@
  * SUCH DAMAGE.
  */
 
+#if defined(__BIONIC__)
+
 #include <sys/shm.h>
 
 #include "header_checks.h"
@@ -43,9 +45,16 @@
   STRUCT_MEMBER(struct shmid_ds, pid_t, shm_lpid);
   STRUCT_MEMBER(struct shmid_ds, pid_t, shm_cpid);
   STRUCT_MEMBER(struct shmid_ds, shmatt_t, shm_nattch);
+#if defined(__LP64__)
   STRUCT_MEMBER(struct shmid_ds, time_t, shm_atime);
   STRUCT_MEMBER(struct shmid_ds, time_t, shm_dtime);
   STRUCT_MEMBER(struct shmid_ds, time_t, shm_ctime);
+#else
+  // Starting at kernel v4.19, 32 bit changed these to unsigned values.
+  STRUCT_MEMBER(struct shmid_ds, unsigned long, shm_atime);
+  STRUCT_MEMBER(struct shmid_ds, unsigned long, shm_dtime);
+  STRUCT_MEMBER(struct shmid_ds, unsigned long, shm_ctime);
+#endif
 
   TYPE(pid_t);
   TYPE(size_t);
@@ -56,3 +65,4 @@
   FUNCTION(shmdt, int (*f)(const void*));
   FUNCTION(shmget, int (*f)(key_t, size_t, int));
 }
+#endif