4 files changed, 8 insertions, 8 deletions
diff --git a/sysdeps/mach/hurd/i386/pt-setup.c b/sysdeps/mach/hurd/i386/pt-setup.c
index b498e50..a59f71b 100644
--- a/sysdeps/mach/hurd/i386/pt-setup.c
+++ b/sysdeps/mach/hurd/i386/pt-setup.c
@@ -49,7 +49,7 @@ stack_setup (struct __pthread *thread,
 		       + ((thread->guardsize + __vm_page_size - 1)
 			  / __vm_page_size) * __vm_page_size);
 
-  if (start_routine)
+  if (start_routine != NULL)
     {
       /* And then the call frame.  */
       top -= 3;
diff --git a/sysdeps/mach/hurd/pt-hurd-cond-timedwait.c b/sysdeps/mach/hurd/pt-hurd-cond-timedwait.c
index 182a7e2..41792e3 100644
--- a/sysdeps/mach/hurd/pt-hurd-cond-timedwait.c
+++ b/sysdeps/mach/hurd/pt-hurd-cond-timedwait.c
@@ -69,7 +69,7 @@ __pthread_hurd_cond_timedwait_internal (pthread_cond_t *cond,
 
   assert (ss->intr_port == MACH_PORT_NULL);	/* Sanity check for signal bugs. */
 
-  if (abstime && (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000))
+  if (abstime != NULL && (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000))
     return EINVAL;
 
   /* Atomically enqueue our thread on the condition variable's queue of
@@ -111,7 +111,7 @@ __pthread_hurd_cond_timedwait_internal (pthread_cond_t *cond,
       __pthread_mutex_unlock (mutex);
 
       /* Block the thread.  */
-      if (abstime)
+      if (abstime != NULL)
 	err = __pthread_timedblock (self, abstime, clock_id);
       else
 	{
@@ -153,7 +153,7 @@ __pthread_hurd_cond_timedwait_internal (pthread_cond_t *cond,
   ss->cancel = 0;
   __spin_unlock (&ss->lock);
 
-  if (mutex)
+  if (mutex != NULL)
     /* Reacquire the mutex and return.  */
     __pthread_mutex_lock (mutex);
 
diff --git a/sysdeps/mach/hurd/pt-sigstate.c b/sysdeps/mach/hurd/pt-sigstate.c
index bdc71c9..890fd57 100644
--- a/sysdeps/mach/hurd/pt-sigstate.c
+++ b/sysdeps/mach/hurd/pt-sigstate.c
@@ -37,10 +37,10 @@ __pthread_sigstate (struct __pthread *thread, int how,
 
   _hurd_sigstate_lock (ss);
 
-  if (oset)
+  if (oset != NULL)
     *oset = ss->blocked;
 
-  if (set)
+  if (set != NULL)
     {
       switch (how)
 	{
diff --git a/sysdeps/mach/hurd/pt-sysdep.c b/sysdeps/mach/hurd/pt-sysdep.c
index 118b264..40ebc8e 100644
--- a/sysdeps/mach/hurd/pt-sysdep.c
+++ b/sysdeps/mach/hurd/pt-sysdep.c
@@ -44,14 +44,14 @@ _init_routine (void *stack)
   int err;
   pthread_attr_t attr, *attrp = 0;
 
-  if (__pthread_threads)
+  if (__pthread_threads != NULL)
     /* Already initialized */
     return 0;
 
   /* Initialize the library.  */
   ___pthread_init ();
 
-  if (stack)
+  if (stack != NULL)
     {
       /* We are getting initialized due to dlopening a library using libpthread
          while the main program was not linked against libpthread.  */