Trent Mick <trentm@activestate.com>:

The common technique for printing out a pointer has been to cast to a long
and use the "%lx" printf modifier. This is incorrect on Win64 where casting
to a long truncates the pointer. The "%p" formatter should be used instead.

The problem as stated by Tim:
> Unfortunately, the C committee refused to define what %p conversion "looks
> like" -- they explicitly allowed it to be implementation-defined. Older
> versions of Microsoft C even stuck a colon in the middle of the address (in
> the days of segment+offset addressing)!

The result is that the hex value of a pointer will maybe/maybe not have a 0x
prepended to it.


Notes on the patch:

There are two main classes of changes:
- in the various repr() functions that print out pointers
- debugging printf's in the various thread_*.h files (these are why the
patch is large)


Closes SourceForge patch #100505.

22 files changed, 153 insertions, 153 deletions

diff --git a/Modules/_tkinter.c b/Modules/_tkinter.c
index da905596d9..d7a4fe113c 100644
--- a/Modules/_tkinter.c
+++ b/Modules/_tkinter.c
@@ -1705,7 +1705,7 @@ Tktt_Repr(self)
 	TkttObject *v = (TkttObject *)self;
 	char buf[100];
 
-	sprintf(buf, "<tktimertoken at 0x%lx%s>", (long)v,
+	sprintf(buf, "<tktimertoken at %p%s>", v,
 		v->func == NULL ? ", handler deleted" : "");
 	return PyString_FromString(buf);
 }
diff --git a/Modules/flmodule.c b/Modules/flmodule.c
index c6ce439347..900f3812d1 100644
--- a/Modules/flmodule.c
+++ b/Modules/flmodule.c
@@ -435,8 +435,8 @@ generic_repr(g)
 	genericobject *g;
 {
 	char buf[100];
-	sprintf(buf, "<FORMS_object at %lx, objclass=%d>",
-		(long)g, g->ob_generic->objclass);
+	sprintf(buf, "<FORMS_object at %p, objclass=%d>",
+		g, g->ob_generic->objclass);
 	return PyString_FromString(buf);
 }
 
@@ -1906,8 +1906,8 @@ form_repr(f)
 	formobject *f;
 {
 	char buf[100];
-	sprintf(buf, "<FORMS_form at %lx, window=%ld>",
-		(long)f, f->ob_form->window);
+	sprintf(buf, "<FORMS_form at %p, window=%ld>",
+		f, f->ob_form->window);
 	return PyString_FromString(buf);
 }
 
diff --git a/Modules/mpzmodule.c b/Modules/mpzmodule.c
index af44abf3c6..09d46b9e8f 100644
--- a/Modules/mpzmodule.c
+++ b/Modules/mpzmodule.c
@@ -262,7 +262,7 @@ mpz_format(objp, base, withname)
 
 #ifdef MPZ_DEBUG
 	fprintf(stderr,
-		"mpz_format: cp (str end) 0x%x, begin 0x%x, diff %d, i %d\n",
+		"mpz_format: cp (str end) %p, begin %p, diff %d, i %d\n",
 		cp, PyString_AS_STRING(strobjp),
 		cp - PyString_AS_STRING(strobjp), i);
 #endif /* def MPZ_DEBUG */	
@@ -1765,7 +1765,7 @@ void *mp_allocate( alloc_size )
 		Py_FatalError("mp_allocate failure");
 
 #ifdef MPZ_DEBUG
-	fprintf(stderr, "mp_allocate  :     address 0x%08x\n", res);
+	fprintf(stderr, "mp_allocate  :     address %08p\n", res);
 #endif /* def MPZ_DEBUG */	
 
 	MP_SET_TEST(res,alloc_size);
@@ -1782,7 +1782,7 @@ void *mp_reallocate( ptr, old_size, new_size )
 	void *res;
 
 #ifdef MPZ_DEBUG
-	fprintf(stderr, "mp_reallocate: old address 0x%08x, old size %ld\n",
+	fprintf(stderr, "mp_reallocate: old address %08p, old size %ld\n",
 		ptr, old_size);
 #endif /* def MPZ_DEBUG */	
 
@@ -1792,7 +1792,7 @@ void *mp_reallocate( ptr, old_size, new_size )
 		Py_FatalError("mp_reallocate failure");
 
 #ifdef MPZ_DEBUG
-	fprintf(stderr, "mp_reallocate: new address 0x%08x, new size %ld\n",
+	fprintf(stderr, "mp_reallocate: new address %08p, new size %ld\n",
 		res, new_size);
 #endif /* def MPZ_DEBUG */	
 
@@ -1808,7 +1808,7 @@ void mp_free( ptr, size )
 {
 
 #ifdef MPZ_DEBUG
-	fprintf(stderr, "mp_free      : old address 0x%08x, old size %ld\n",
+	fprintf(stderr, "mp_free      : old address %08p, old size %ld\n",
 		ptr, size);
 #endif /* def MPZ_DEBUG */	
 
diff --git a/Objects/bufferobject.c b/Objects/bufferobject.c
index 72d424253c..c8ebd24911 100644
--- a/Objects/bufferobject.c
+++ b/Objects/bufferobject.c
@@ -241,20 +241,20 @@ buffer_repr(self)
 
 	if ( self->b_base == NULL )
 	{
-		sprintf(buf, "<%s buffer ptr %lx, size %d at %lx>",
+		sprintf(buf, "<%s buffer ptr %p, size %d at %p>",
 			status,
-			(long)self->b_ptr,
+			self->b_ptr,
 			self->b_size,
-			(long)self);
+			self);
 	}
 	else
 	{
-		sprintf(buf, "<%s buffer for %lx, ptr %lx, size %d at %lx>",
+		sprintf(buf, "<%s buffer for %p, ptr %p, size %d at %p>",
 			status,
-			(long)self->b_base,
-			(long)self->b_ptr,
+			self->b_base,
+			self->b_ptr,
 			self->b_size,
-			(long)self);
+			self);
 	}
 
 	return PyString_FromString(buf);
diff --git a/Objects/classobject.c b/Objects/classobject.c
index 4653d27b60..17b7bf464a 100644
--- a/Objects/classobject.c
+++ b/Objects/classobject.c
@@ -353,11 +353,11 @@ class_repr(op)
 	else
 		name = PyString_AsString(op->cl_name);
 	if (mod == NULL || !PyString_Check(mod))
-		sprintf(buf, "<class ?.%.100s at %lx>", name, (long)op);
+		sprintf(buf, "<class ?.%.100s at %p>", name, op);
 	else
-		sprintf(buf, "<class %.50s.%.50s at %lx>",
+		sprintf(buf, "<class %.50s.%.50s at %p>",
 			PyString_AsString(mod),
-			name, (long)op);
+			name, op);
 	return PyString_FromString(buf);
 }
 
@@ -805,12 +805,12 @@ instance_repr(inst)
 			cname = "?";
 		PyErr_Clear();
 		if (mod == NULL || !PyString_Check(mod))
-			sprintf(buf, "<?.%.100s instance at %lx>",
-				cname, (long)inst);
+			sprintf(buf, "<?.%.100s instance at %p>",
+				cname, inst);
 		else
-			sprintf(buf, "<%.50s.%.50s instance at %lx>",
+			sprintf(buf, "<%.50s.%.50s instance at %p>",
 				PyString_AsString(mod),
-				cname, (long)inst);
+				cname, inst);
 		return PyString_FromString(buf);
 	}
 	res = PyEval_CallObject(func, (PyObject *)NULL);
@@ -1704,8 +1704,8 @@ instancemethod_repr(a)
 			icname = PyString_AsString(iclassname);
 		else
 			icname = "?";
-		sprintf(buf, "<method %.60s.%.60s of %.60s instance at %lx>",
-			fcname, fname, icname, (long)self);
+		sprintf(buf, "<method %.60s.%.60s of %.60s instance at %p>",
+			fcname, fname, icname, self);
 	}
 	Py_XDECREF(funcname);
 	return PyString_FromString(buf);
diff --git a/Objects/fileobject.c b/Objects/fileobject.c
index cbc1aff937..99c0dd5e2b 100644
--- a/Objects/fileobject.c
+++ b/Objects/fileobject.c
@@ -240,11 +240,11 @@ file_repr(f)
 	PyFileObject *f;
 {
 	char buf[300];
-	sprintf(buf, "<%s file '%.256s', mode '%.10s' at %lx>",
+	sprintf(buf, "<%s file '%.256s', mode '%.10s' at %p>",
 		f->f_fp == NULL ? "closed" : "open",
 		PyString_AsString(f->f_name),
 		PyString_AsString(f->f_mode),
-		(long)f);
+		f);
 	return PyString_FromString(buf);
 }
 
diff --git a/Objects/floatobject.c b/Objects/floatobject.c
index 29ade282bd..f455ef5891 100644
--- a/Objects/floatobject.c
+++ b/Objects/floatobject.c
@@ -806,8 +806,8 @@ PyFloat_Fini()
 					char buf[100];
 					PyFloat_AsString(buf, p);
 					fprintf(stderr,
-			     "#   <float at %lx, refcnt=%d, val=%s>\n",
-						(long)p, p->ob_refcnt, buf);
+			     "#   <float at %p, refcnt=%d, val=%s>\n",
+						p, p->ob_refcnt, buf);
 				}
 			}
 			list = list->next;
diff --git a/Objects/funcobject.c b/Objects/funcobject.c
index 2736d6530e..f91cc6d903 100644
--- a/Objects/funcobject.c
+++ b/Objects/funcobject.c
@@ -202,11 +202,11 @@ func_repr(op)
 {
 	char buf[140];
 	if (op->func_name == Py_None)
-		sprintf(buf, "<anonymous function at %lx>", (long)op);
+		sprintf(buf, "<anonymous function at %p>", op);
 	else
-		sprintf(buf, "<function %.100s at %lx>",
+		sprintf(buf, "<function %.100s at %p>",
 			PyString_AsString(op->func_name),
-			(long)op);
+			op);
 	return PyString_FromString(buf);
 }
 
diff --git a/Objects/intobject.c b/Objects/intobject.c
index 2e8939e65e..d182b30e5b 100644
--- a/Objects/intobject.c
+++ b/Objects/intobject.c
@@ -957,8 +957,8 @@ PyInt_Fini()
 			     i++, p++) {
 				if (PyInt_Check(p) && p->ob_refcnt != 0)
 					fprintf(stderr,
-				"#   <int at %lx, refcnt=%d, val=%ld>\n",
-					  (long)p, p->ob_refcnt, p->ob_ival);
+				"#   <int at %p, refcnt=%d, val=%ld>\n",
+						p, p->ob_refcnt, p->ob_ival);
 			}
 			list = list->next;
 		}
diff --git a/Objects/methodobject.c b/Objects/methodobject.c
index 580bb2f25b..ec98de492a 100644
--- a/Objects/methodobject.c
+++ b/Objects/methodobject.c
@@ -148,9 +148,9 @@ meth_repr(m)
 		sprintf(buf, "<built-in function %.80s>", m->m_ml->ml_name);
 	else
 		sprintf(buf,
-			"<built-in method %.80s of %.80s object at %lx>",
+			"<built-in method %.80s of %.80s object at %p>",
 			m->m_ml->ml_name, m->m_self->ob_type->tp_name,
-			(long)m->m_self);
+			m->m_self);
 	return PyString_FromString(buf);
 }
 
diff --git a/Objects/object.c b/Objects/object.c
index 6eaff67dac..694aade004 100644
--- a/Objects/object.c
+++ b/Objects/object.c
@@ -229,12 +229,12 @@ PyObject_Print(op, fp, flags)
 	}
 	else {
 		if (op->ob_refcnt <= 0)
-			fprintf(fp, "<refcnt %u at %lx>",
-				op->ob_refcnt, (long)op);
+			fprintf(fp, "<refcnt %u at %p>",
+				op->ob_refcnt, op);
 		else if (op->ob_type->tp_print == NULL) {
 			if (op->ob_type->tp_repr == NULL) {
-				fprintf(fp, "<%s object at %lx>",
-					op->ob_type->tp_name, (long)op);
+				fprintf(fp, "<%s object at %p>",
+					op->ob_type->tp_name, op);
 			}
 			else {
 				PyObject *s;
@@ -280,8 +280,8 @@ PyObject_Repr(v)
 		return PyString_FromString("<NULL>");
 	else if (v->ob_type->tp_repr == NULL) {
 		char buf[120];
-		sprintf(buf, "<%.80s object at %lx>",
-			v->ob_type->tp_name, (long)v);
+		sprintf(buf, "<%.80s object at %p>",
+			v->ob_type->tp_name, v);
 		return PyString_FromString(buf);
 	}
 	else {
diff --git a/Python/thread_beos.h b/Python/thread_beos.h
index 0dff786436..5eab31a903 100644
--- a/Python/thread_beos.h
+++ b/Python/thread_beos.h
@@ -262,7 +262,7 @@ PyThread_type_lock PyThread_allocate_lock( void )
 		return (PyThread_type_lock)NULL;
 	}
 
-	dprintf(("PyThread_allocate_lock() -> %lx\n", (long)lock));
+	dprintf(("PyThread_allocate_lock() -> %p\n", lock));
 	return (PyThread_type_lock) lock;
 }
 
@@ -270,7 +270,7 @@ void PyThread_free_lock( PyThread_type_lock lock )
 {
 	status_t retval;
 
-	dprintf(("PyThread_free_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_free_lock(%p) called\n", lock));
 	
 	retval = benaphore_destroy( (benaphore_t *)lock );
 	if( retval != EOK ) {
@@ -284,7 +284,7 @@ int PyThread_acquire_lock( PyThread_type_lock lock, int waitflag )
 	int success;
 	status_t retval;
 
-	dprintf(("PyThread_acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
+	dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
 
 	if( waitflag ) {
 		retval = benaphore_lock( (benaphore_t *)lock );
@@ -300,7 +300,7 @@ int PyThread_acquire_lock( PyThread_type_lock lock, int waitflag )
 		/* TODO: that's bad, raise an exception */
 	}
 
-	dprintf(("PyThread_acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
+	dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
 	return success;
 }
 
@@ -308,7 +308,7 @@ void PyThread_release_lock( PyThread_type_lock lock )
 {
 	status_t retval;
 	
-	dprintf(("PyThread_release_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_release_lock(%p) called\n", lock));
 	
 	retval = benaphore_unlock( (benaphore_t *)lock );
 	if( retval != EOK ) {
@@ -336,7 +336,7 @@ PyThread_type_sema PyThread_allocate_sema( int value )
 		return 0;
 	}
 
-	dprintf(("PyThread_allocate_sema() -> %lx\n", (long) sema));
+	dprintf(("PyThread_allocate_sema() -> %p\n", sema));
 	return (PyThread_type_sema) sema;
 }
 
@@ -344,7 +344,7 @@ void PyThread_free_sema( PyThread_type_sema sema )
 {
 	status_t retval;
 	
-	dprintf(("PyThread_free_sema(%lx) called\n", (long) sema));
+	dprintf(("PyThread_free_sema(%p) called\n", sema));
 	
 	retval = delete_sem( (sem_id)sema );
 	if( retval != B_NO_ERROR ) {
@@ -357,7 +357,7 @@ int PyThread_down_sema( PyThread_type_sema sema, int waitflag )
 {
 	status_t retval;
 
-	dprintf(("PyThread_down_sema(%lx, %d) called\n", (long) sema, waitflag));
+	dprintf(("PyThread_down_sema(%p, %d) called\n", sema, waitflag));
 
 	if( waitflag ) {
 		retval = acquire_sem( (sem_id)sema );
@@ -370,7 +370,7 @@ int PyThread_down_sema( PyThread_type_sema sema, int waitflag )
 		return 0;
 	}
 
-	dprintf(("PyThread_down_sema(%lx) return\n", (long) sema));
+	dprintf(("PyThread_down_sema(%p) return\n", sema));
 	return -1;
 }
 
@@ -378,7 +378,7 @@ void PyThread_up_sema( PyThread_type_sema sema )
 {
 	status_t retval;
 	
-	dprintf(("PyThread_up_sema(%lx)\n", (long) sema));
+	dprintf(("PyThread_up_sema(%p)\n", sema));
 	
 	retval = release_sem( (sem_id)sema );
 	if( retval != B_NO_ERROR ) {
diff --git a/Python/thread_cthread.h b/Python/thread_cthread.h
index 11370c56ed..1e6074334a 100644
--- a/Python/thread_cthread.h
+++ b/Python/thread_cthread.h
@@ -129,13 +129,13 @@ PyThread_type_lock PyThread_allocate_lock _P0()
 		free((void *) lock);
 		lock = 0;
 	}
-	dprintf(("PyThread_allocate_lock() -> %lx\n", (long)lock));
+	dprintf(("PyThread_allocate_lock() -> %p\n", lock));
 	return (PyThread_type_lock) lock;
 }
 
 void PyThread_free_lock _P1(lock, PyThread_type_lock lock)
 {
-	dprintf(("PyThread_free_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_free_lock(%p) called\n", lock));
 	mutex_free(lock);
 }
 
@@ -143,20 +143,20 @@ int PyThread_acquire_lock _P2(lock, PyThread_type_lock lock, waitflag, int waitf
 {
 	int success = FALSE;
 
-	dprintf(("PyThread_acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
+	dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
 	if (waitflag) { 	/* blocking */
 		mutex_lock(lock);
 		success = TRUE;
 	} else {		/* non blocking */
 		success = mutex_try_lock(lock);
 	}
-	dprintf(("PyThread_acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
+	dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
 	return success;
 }
 
 void PyThread_release_lock _P1(lock, PyThread_type_lock lock)
 {
-	dprintf(("PyThread_release_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_release_lock(%p) called\n", lock));
 	mutex_unlock((mutex_t )lock);
 }
 
@@ -181,23 +181,23 @@ PyThread_type_sema PyThread_allocate_sema _P1(value, int value)
 	if (!initialized)
 		PyThread_init_thread();
 
-	dprintf(("PyThread_allocate_sema() -> %lx\n", (long) sema));
+	dprintf(("PyThread_allocate_sema() -> %p\n", sema));
 	return (PyThread_type_sema) sema;
 }
 
 void PyThread_free_sema _P1(sema, PyThread_type_sema sema)
 {
-	dprintf(("PyThread_free_sema(%lx) called\n", (long) sema));
+	dprintf(("PyThread_free_sema(%p) called\n", sema));
 }
 
 int PyThread_down_sema _P2(sema, PyThread_type_sema sema, waitflag, int waitflag)
 {
-	dprintf(("PyThread_down_sema(%lx, %d) called\n", (long) sema, waitflag));
-	dprintf(("PyThread_down_sema(%lx) return\n", (long) sema));
+	dprintf(("PyThread_down_sema(%p, %d) called\n", sema, waitflag));
+	dprintf(("PyThread_down_sema(%p) return\n", sema));
 	return -1;
 }
 
 void PyThread_up_sema _P1(sema, PyThread_type_sema sema)
 {
-	dprintf(("PyThread_up_sema(%lx)\n", (long) sema));
+	dprintf(("PyThread_up_sema(%p)\n", sema));
 }
diff --git a/Python/thread_foobar.h b/Python/thread_foobar.h
index e2c75e3b07..3be13b99ef 100644
--- a/Python/thread_foobar.h
+++ b/Python/thread_foobar.h
@@ -108,27 +108,27 @@ PyThread_type_lock PyThread_allocate_lock _P0()
 	if (!initialized)
 		PyThread_init_thread();
 
-	dprintf(("PyThread_allocate_lock() -> %lx\n", (long)lock));
+	dprintf(("PyThread_allocate_lock() -> %p\n", lock));
 	return (PyThread_type_lock) lock;
 }
 
 void PyThread_free_lock _P1(lock, PyThread_type_lock lock)
 {
-	dprintf(("PyThread_free_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_free_lock(%p) called\n", lock));
 }
 
 int PyThread_acquire_lock _P2(lock, PyThread_type_lock lock, waitflag, int waitflag)
 {
 	int success;
 
-	dprintf(("PyThread_acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
-	dprintf(("PyThread_acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
+	dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
+	dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
 	return success;
 }
 
 void PyThread_release_lock _P1(lock, PyThread_type_lock lock)
 {
-	dprintf(("PyThread_release_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_release_lock(%p) called\n", lock));
 }
 
 /*
@@ -140,23 +140,23 @@ PyThread_type_sema PyThread_allocate_sema _P1(value, int value)
 	if (!initialized)
 		PyThread_init_thread();
 
-	dprintf(("PyThread_allocate_sema() -> %lx\n", (long) sema));
+	dprintf(("PyThread_allocate_sema() -> %p\n",  sema));
 	return (PyThread_type_sema) sema;
 }
 
 void PyThread_free_sema _P1(sema, PyThread_type_sema sema)
 {
-	dprintf(("PyThread_free_sema(%lx) called\n", (long) sema));
+	dprintf(("PyThread_free_sema(%p) called\n",  sema));
 }
 
 int PyThread_down_sema _P2(sema, PyThread_type_sema sema, waitflag, int waitflag)
 {
-	dprintf(("PyThread_down_sema(%lx, %d) called\n", (long) sema, waitflag));
-	dprintf(("PyThread_down_sema(%lx) return\n", (long) sema));
+	dprintf(("PyThread_down_sema(%p, %d) called\n",  sema, waitflag));
+	dprintf(("PyThread_down_sema(%p) return\n",  sema));
 	return -1;
 }
 
 void PyThread_up_sema _P1(sema, PyThread_type_sema sema)
 {
-	dprintf(("PyThread_up_sema(%lx)\n", (long) sema));
+	dprintf(("PyThread_up_sema(%p)\n",  sema));
 }
diff --git a/Python/thread_lwp.h b/Python/thread_lwp.h
index 5ad4df4856..1588c6a08a 100644
--- a/Python/thread_lwp.h
+++ b/Python/thread_lwp.h
@@ -137,13 +137,13 @@ PyThread_type_lock PyThread_allocate_lock _P0()
 	lock->lock_locked = 0;
 	(void) mon_create(&lock->lock_monitor);
 	(void) cv_create(&lock->lock_condvar, lock->lock_monitor);
-	dprintf(("PyThread_allocate_lock() -> %lx\n", (long)lock));
+	dprintf(("PyThread_allocate_lock() -> %p\n", lock));
 	return (PyThread_type_lock) lock;
 }
 
 void PyThread_free_lock _P1(lock, PyThread_type_lock lock)
 {
-	dprintf(("PyThread_free_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_free_lock(%p) called\n", lock));
 	mon_destroy(((struct lock *) lock)->lock_monitor);
 	free((char *) lock);
 }
@@ -152,7 +152,7 @@ int PyThread_acquire_lock _P2(lock, PyThread_type_lock lock, waitflag, int waitf
 {
 	int success;
 
-	dprintf(("PyThread_acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
+	dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
 	success = 0;
 
 	(void) mon_enter(((struct lock *) lock)->lock_monitor);
@@ -165,13 +165,13 @@ int PyThread_acquire_lock _P2(lock, PyThread_type_lock lock, waitflag, int waitf
 	}
 	cv_broadcast(((struct lock *) lock)->lock_condvar);
 	mon_exit(((struct lock *) lock)->lock_monitor);
-	dprintf(("PyThread_acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
+	dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
 	return success;
 }
 
 void PyThread_release_lock _P1(lock, PyThread_type_lock lock)
 {
-	dprintf(("PyThread_release_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_release_lock(%p) called\n", lock));
 	(void) mon_enter(((struct lock *) lock)->lock_monitor);
 	((struct lock *) lock)->lock_locked = 0;
 	cv_broadcast(((struct lock *) lock)->lock_condvar);
@@ -188,23 +188,23 @@ PyThread_type_sema PyThread_allocate_sema _P1(value, int value)
 	if (!initialized)
 		PyThread_init_thread();
 
-	dprintf(("PyThread_allocate_sema() -> %lx\n", (long) sema));
+	dprintf(("PyThread_allocate_sema() -> %p\n",  sema));
 	return (PyThread_type_sema) sema;
 }
 
 void PyThread_free_sema _P1(sema, PyThread_type_sema sema)
 {
-	dprintf(("PyThread_free_sema(%lx) called\n", (long) sema));
+	dprintf(("PyThread_free_sema(%p) called\n",  sema));
 }
 
 int PyThread_down_sema _P2(sema, PyThread_type_sema sema, waitflag, int waitflag)
 {
-	dprintf(("PyThread_down_sema(%lx, %d) called\n", (long) sema, waitflag));
-	dprintf(("PyThread_down_sema(%lx) return\n", (long) sema));
+	dprintf(("PyThread_down_sema(%p, %d) called\n",  sema, waitflag));
+	dprintf(("PyThread_down_sema(%p) return\n",  sema));
 	return -1;
 }
 
 void PyThread_up_sema _P1(sema, PyThread_type_sema sema)
 {
-	dprintf(("PyThread_up_sema(%lx)\n", (long) sema));
+	dprintf(("PyThread_up_sema(%p)\n",  sema));
 }
diff --git a/Python/thread_nt.h b/Python/thread_nt.h
index fb04f830ee..3de1c6622a 100644
--- a/Python/thread_nt.h
+++ b/Python/thread_nt.h
@@ -273,14 +273,14 @@ PyThread_type_lock PyThread_allocate_lock(void)
 
 	aLock = AllocNonRecursiveMutex() ;
 
-	dprintf(("%ld: PyThread_allocate_lock() -> %lx\n", PyThread_get_thread_ident(), (long)aLock));
+	dprintf(("%ld: PyThread_allocate_lock() -> %p\n", PyThread_get_thread_ident(), aLock));
 
 	return (PyThread_type_lock) aLock;
 }
 
 void PyThread_free_lock(PyThread_type_lock aLock)
 {
-	dprintf(("%ld: PyThread_free_lock(%lx) called\n", PyThread_get_thread_ident(),(long)aLock));
+	dprintf(("%ld: PyThread_free_lock(%p) called\n", PyThread_get_thread_ident(),aLock));
 
 	FreeNonRecursiveMutex(aLock) ;
 }
@@ -295,21 +295,21 @@ int PyThread_acquire_lock(PyThread_type_lock aLock, int waitflag)
 {
 	int success ;
 
-	dprintf(("%ld: PyThread_acquire_lock(%lx, %d) called\n", PyThread_get_thread_ident(),(long)aLock, waitflag));
+	dprintf(("%ld: PyThread_acquire_lock(%p, %d) called\n", PyThread_get_thread_ident(),aLock, waitflag));
 
 	success = aLock && EnterNonRecursiveMutex((PNRMUTEX) aLock, (waitflag == 1 ? INFINITE : 0)) == WAIT_OBJECT_0 ;
 
-	dprintf(("%ld: PyThread_acquire_lock(%lx, %d) -> %d\n", PyThread_get_thread_ident(),(long)aLock, waitflag, success));
+	dprintf(("%ld: PyThread_acquire_lock(%p, %d) -> %d\n", PyThread_get_thread_ident(),aLock, waitflag, success));
 
 	return success;
 }
 
 void PyThread_release_lock(PyThread_type_lock aLock)
 {
-	dprintf(("%ld: PyThread_release_lock(%lx) called\n", PyThread_get_thread_ident(),(long)aLock));
+	dprintf(("%ld: PyThread_release_lock(%p) called\n", PyThread_get_thread_ident(),aLock));
 
 	if (!(aLock && LeaveNonRecursiveMutex((PNRMUTEX) aLock)))
-		dprintf(("%ld: Could not PyThread_release_lock(%lx) error: %l\n", PyThread_get_thread_ident(), (long)aLock, GetLastError()));
+		dprintf(("%ld: Could not PyThread_release_lock(%p) error: %l\n", PyThread_get_thread_ident(), aLock, GetLastError()));
 }
 
 /*
@@ -328,14 +328,14 @@ PyThread_type_sema PyThread_allocate_sema(int value)
 	                              INT_MAX,        /* Maximum value                */
 	                              NULL);          /* Name of semaphore            */
 
-	dprintf(("%ld: PyThread_allocate_sema() -> %lx\n", PyThread_get_thread_ident(), (long)aSemaphore));
+	dprintf(("%ld: PyThread_allocate_sema() -> %p\n", PyThread_get_thread_ident(), aSemaphore));
 
 	return (PyThread_type_sema) aSemaphore;
 }
 
 void PyThread_free_sema(PyThread_type_sema aSemaphore)
 {
-	dprintf(("%ld: PyThread_free_sema(%lx) called\n", PyThread_get_thread_ident(), (long)aSemaphore));
+	dprintf(("%ld: PyThread_free_sema(%p) called\n", PyThread_get_thread_ident(), aSemaphore));
 
 	CloseHandle((HANDLE) aSemaphore);
 }
@@ -347,11 +347,11 @@ int PyThread_down_sema(PyThread_type_sema aSemaphore, int waitflag)
 {
 	DWORD waitResult;
 
-	dprintf(("%ld: PyThread_down_sema(%lx) called\n", PyThread_get_thread_ident(), (long)aSemaphore));
+	dprintf(("%ld: PyThread_down_sema(%p) called\n", PyThread_get_thread_ident(), aSemaphore));
 
 	waitResult = WaitForSingleObject( (HANDLE) aSemaphore, INFINITE);
 
-	dprintf(("%ld: PyThread_down_sema(%lx) return: %l\n", PyThread_get_thread_ident(),(long) aSemaphore, waitResult));
+	dprintf(("%ld: PyThread_down_sema(%p) return: %l\n", PyThread_get_thread_ident(), aSemaphore, waitResult));
 	return 0;
 }
 
@@ -362,5 +362,5 @@ void PyThread_up_sema(PyThread_type_sema aSemaphore)
                 1,                              /* increment count by one                       */
                 NULL);                          /* not interested in previous count             */
                                                 
-	dprintf(("%ld: PyThread_up_sema(%lx)\n", PyThread_get_thread_ident(), (long)aSemaphore));
+	dprintf(("%ld: PyThread_up_sema(%p)\n", PyThread_get_thread_ident(), aSemaphore));
 }
diff --git a/Python/thread_os2.h b/Python/thread_os2.h
index 982fb6f5bf..aa972ce539 100644
--- a/Python/thread_os2.h
+++ b/Python/thread_os2.h
@@ -141,14 +141,14 @@ PyThread_type_lock PyThread_allocate_lock(void)
                     0,     /* shared ?      */
                     0);    /* initial state */  
 
-  dprintf(("%ld: PyThread_allocate_lock() -> %lx\n", PyThread_get_thread_ident(), (long)aLock));
+  dprintf(("%ld: PyThread_allocate_lock() -> %p\n", PyThread_get_thread_ident(), aLock));
 
   return (PyThread_type_lock) aLock;
 }
 
 void PyThread_free_lock(PyThread_type_lock aLock)
 {
-  dprintf(("%ld: PyThread_free_lock(%lx) called\n", PyThread_get_thread_ident(),(long)aLock));
+  dprintf(("%ld: PyThread_free_lock(%p) called\n", PyThread_get_thread_ident(),aLock));
 
   DosCloseMutexSem((HMTX)aLock);
 }
@@ -166,8 +166,8 @@ int PyThread_acquire_lock(PyThread_type_lock aLock, int waitflag)
   PID   pid = 0;
   TID   tid = 0;
 
-  dprintf(("%ld: PyThread_acquire_lock(%lx, %d) called\n", PyThread_get_thread_ident(),
-           (long)aLock, waitflag));
+  dprintf(("%ld: PyThread_acquire_lock(%p, %d) called\n", PyThread_get_thread_ident(),
+           aLock, waitflag));
 
   DosQueryMutexSem((HMTX)aLock,&pid,&tid,&count);
   if( tid == PyThread_get_thread_ident() ) { /* if we own this lock */
@@ -181,19 +181,19 @@ int PyThread_acquire_lock(PyThread_type_lock aLock, int waitflag)
     }
   }
 
-  dprintf(("%ld: PyThread_acquire_lock(%lx, %d) -> %d\n",
-           PyThread_get_thread_ident(),(long)aLock, waitflag, success));
+  dprintf(("%ld: PyThread_acquire_lock(%p, %d) -> %d\n",
+           PyThread_get_thread_ident(),aLock, waitflag, success));
 
   return success;
 }
 
 void PyThread_release_lock(PyThread_type_lock aLock)
 {
-  dprintf(("%ld: PyThread_release_lock(%lx) called\n", PyThread_get_thread_ident(),(long)aLock));
+  dprintf(("%ld: PyThread_release_lock(%p) called\n", PyThread_get_thread_ident(),aLock));
 
   if ( DosReleaseMutexSem( (HMTX) aLock ) != 0 ) {
-    dprintf(("%ld: Could not PyThread_release_lock(%lx) error: %l\n",
-             PyThread_get_thread_ident(), (long)aLock, GetLastError()));
+    dprintf(("%ld: Could not PyThread_release_lock(%p) error: %l\n",
+             PyThread_get_thread_ident(), aLock, GetLastError()));
   }
 }
 
@@ -217,5 +217,5 @@ int PyThread_down_sema(PyThread_type_sema aSemaphore, int waitflag)
 
 void PyThread_up_sema(PyThread_type_sema aSemaphore)
 {
-  dprintf(("%ld: PyThread_up_sema(%lx)\n", PyThread_get_thread_ident(), (long)aSemaphore));
+  dprintf(("%ld: PyThread_up_sema(%p)\n", PyThread_get_thread_ident(), aSemaphore));
 }
diff --git a/Python/thread_pth.h b/Python/thread_pth.h
index 305121e7e1..3004650e16 100644
--- a/Python/thread_pth.h
+++ b/Python/thread_pth.h
@@ -168,7 +168,7 @@ PyThread_type_lock PyThread_allocate_lock _P0()
 			lock = NULL;
 		}
 	}
-	dprintf(("PyThread_allocate_lock() -> %lx\n", (long)lock));
+	dprintf(("PyThread_allocate_lock() -> %p\n", lock));
 	return (PyThread_type_lock) lock;
 }
 
@@ -177,7 +177,7 @@ void PyThread_free_lock _P1(lock, PyThread_type_lock lock)
 	pth_lock *thelock = (pth_lock *)lock;
 	int status, error = 0;
 
-	dprintf(("PyThread_free_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_free_lock(%p) called\n", lock));
 
 	free((void *)thelock);
 }
@@ -188,7 +188,7 @@ int PyThread_acquire_lock _P2(lock, PyThread_type_lock lock, waitflag, int waitf
 	pth_lock *thelock = (pth_lock *)lock;
 	int status, error = 0;
 
-	dprintf(("PyThread_acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
+	dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
 
 	status = pth_mutex_acquire(&thelock->mut, !waitflag, NULL);
 	CHECK_STATUS("pth_mutex_acquire[1]");
@@ -215,7 +215,7 @@ int PyThread_acquire_lock _P2(lock, PyThread_type_lock lock, waitflag, int waitf
                 success = 1;
         }
         if (error) success = 0;
-        dprintf(("PyThread_acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
+        dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
 	return success;
 }
 
@@ -224,7 +224,7 @@ void PyThread_release_lock _P1(lock, PyThread_type_lock lock)
         pth_lock *thelock = (pth_lock *)lock;
         int status, error = 0;
 
-        dprintf(("PyThread_release_lock(%lx) called\n", (long)lock));
+        dprintf(("PyThread_release_lock(%p) called\n", lock));
 
         status = pth_mutex_acquire( &thelock->mut, 0, NULL );
         CHECK_STATUS("pth_mutex_acquire[3]");
@@ -270,7 +270,7 @@ PyThread_type_sema PyThread_allocate_sema _P1(value, int value)
 			sema = NULL;
 		}
 	}
-	dprintf(("PyThread_allocate_sema() -> %lx\n", (long) sema));
+	dprintf(("PyThread_allocate_sema() -> %p\n",  sema));
 	return (PyThread_type_sema) sema;
 }
 
@@ -279,7 +279,7 @@ void PyThread_free_sema _P1(sema, PyThread_type_sema sema)
 	int status, error = 0;
 	struct semaphore *thesema = (struct semaphore *) sema;
 
-	dprintf(("PyThread_free_sema(%lx) called\n", (long) sema));
+	dprintf(("PyThread_free_sema(%p) called\n",  sema));
 	free((void *) thesema);
 }
 
@@ -288,7 +288,7 @@ int PyThread_down_sema _P2(sema, PyThread_type_sema sema, waitflag, int waitflag
 	int status, error = 0, success;
 	struct semaphore *thesema = (struct semaphore *) sema;
 
-	dprintf(("PyThread_down_sema(%lx, %d) called\n", (long) sema, waitflag));
+	dprintf(("PyThread_down_sema(%p, %d) called\n",  sema, waitflag));
 	status = pth_mutex_acquire(&thesema->mutex, !waitflag, NULL);
 	CHECK_STATUS("pth_mutex_acquire");
 	if (waitflag) {
@@ -308,7 +308,7 @@ int PyThread_down_sema _P2(sema, PyThread_type_sema sema, waitflag, int waitflag
 		success = 0;
 	status = pth_mutex_release(&thesema->mutex);
 	CHECK_STATUS("pth_mutex_release");
-	dprintf(("PyThread_down_sema(%lx) return\n", (long) sema));
+	dprintf(("PyThread_down_sema(%p) return\n",  sema));
 	return success;
 }
 
@@ -317,7 +317,7 @@ void PyThread_up_sema _P1(sema, PyThread_type_sema sema)
 	int status, error = 0;
 	struct semaphore *thesema = (struct semaphore *) sema;
 
-	dprintf(("PyThread_up_sema(%lx)\n", (long) sema));
+	dprintf(("PyThread_up_sema(%p)\n",  sema));
 	status = pth_mutex_acquire(&thesema->mutex, 0, NULL);
 	CHECK_STATUS("pth_mutex_acquire");
 	thesema->value++;
diff --git a/Python/thread_pthread.h b/Python/thread_pthread.h
index fd03e91611..d718113876 100644
--- a/Python/thread_pthread.h
+++ b/Python/thread_pthread.h
@@ -272,7 +272,7 @@ PyThread_type_lock PyThread_allocate_lock _P0()
 		}
 	}
 
-	dprintf(("PyThread_allocate_lock() -> %lx\n", (long)lock));
+	dprintf(("PyThread_allocate_lock() -> %p\n", lock));
 	return (PyThread_type_lock) lock;
 }
 
@@ -281,7 +281,7 @@ void PyThread_free_lock _P1(lock, PyThread_type_lock lock)
 	pthread_lock *thelock = (pthread_lock *)lock;
 	int status, error = 0;
 
-	dprintf(("PyThread_free_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_free_lock(%p) called\n", lock));
 
 	status = pthread_mutex_destroy( &thelock->mut );
 	CHECK_STATUS("pthread_mutex_destroy");
@@ -298,7 +298,7 @@ int PyThread_acquire_lock _P2(lock, PyThread_type_lock lock, waitflag, int waitf
 	pthread_lock *thelock = (pthread_lock *)lock;
 	int status, error = 0;
 
-	dprintf(("PyThread_acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
+	dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
 
 	status = pthread_mutex_lock( &thelock->mut );
 	CHECK_STATUS("pthread_mutex_lock[1]");
@@ -325,7 +325,7 @@ int PyThread_acquire_lock _P2(lock, PyThread_type_lock lock, waitflag, int waitf
 		success = 1;
 	}
 	if (error) success = 0;
-	dprintf(("PyThread_acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
+	dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
 	return success;
 }
 
@@ -334,7 +334,7 @@ void PyThread_release_lock _P1(lock, PyThread_type_lock lock)
 	pthread_lock *thelock = (pthread_lock *)lock;
 	int status, error = 0;
 
-	dprintf(("PyThread_release_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_release_lock(%p) called\n", lock));
 
 	status = pthread_mutex_lock( &thelock->mut );
 	CHECK_STATUS("pthread_mutex_lock[3]");
@@ -382,7 +382,7 @@ PyThread_type_sema PyThread_allocate_sema _P1(value, int value)
 			sema = NULL;
 		}
 	}
-	dprintf(("PyThread_allocate_sema() -> %lx\n", (long) sema));
+	dprintf(("PyThread_allocate_sema() -> %p\n",  sema));
 	return (PyThread_type_sema) sema;
 }
 
@@ -391,7 +391,7 @@ void PyThread_free_sema _P1(sema, PyThread_type_sema sema)
 	int status, error = 0;
 	struct semaphore *thesema = (struct semaphore *) sema;
 
-	dprintf(("PyThread_free_sema(%lx) called\n", (long) sema));
+	dprintf(("PyThread_free_sema(%p) called\n",  sema));
 	status = pthread_cond_destroy(&thesema->cond);
 	CHECK_STATUS("pthread_cond_destroy");
 	status = pthread_mutex_destroy(&thesema->mutex);
@@ -404,7 +404,7 @@ int PyThread_down_sema _P2(sema, PyThread_type_sema sema, waitflag, int waitflag
 	int status, error = 0, success;
 	struct semaphore *thesema = (struct semaphore *) sema;
 
-	dprintf(("PyThread_down_sema(%lx, %d) called\n", (long) sema, waitflag));
+	dprintf(("PyThread_down_sema(%p, %d) called\n",  sema, waitflag));
 	status = pthread_mutex_lock(&thesema->mutex);
 	CHECK_STATUS("pthread_mutex_lock");
 	if (waitflag) {
@@ -424,7 +424,7 @@ int PyThread_down_sema _P2(sema, PyThread_type_sema sema, waitflag, int waitflag
 		success = 0;
 	status = pthread_mutex_unlock(&thesema->mutex);
 	CHECK_STATUS("pthread_mutex_unlock");
-	dprintf(("PyThread_down_sema(%lx) return\n", (long) sema));
+	dprintf(("PyThread_down_sema(%p) return\n",  sema));
 	return success;
 }
 
@@ -433,7 +433,7 @@ void PyThread_up_sema _P1(sema, PyThread_type_sema sema)
 	int status, error = 0;
 	struct semaphore *thesema = (struct semaphore *) sema;
 
-	dprintf(("PyThread_up_sema(%lx)\n", (long) sema));
+	dprintf(("PyThread_up_sema(%p)\n",  sema));
 	status = pthread_mutex_lock(&thesema->mutex);
 	CHECK_STATUS("pthread_mutex_lock");
 	thesema->value++;
diff --git a/Python/thread_sgi.h b/Python/thread_sgi.h
index a7b3114b36..a699236559 100644
--- a/Python/thread_sgi.h
+++ b/Python/thread_sgi.h
@@ -119,7 +119,7 @@ static void PyThread__init_thread _P0()
 	if (usconfig(CONF_INITSIZE, size) < 0)
 		perror("usconfig - CONF_INITSIZE (reset)");
 	addr = (long) dl_getrange(size + HDR_SIZE);
-	dprintf(("trying to use addr %lx-%lx for shared arena\n", addr, addr+size));
+	dprintf(("trying to use addr %p-%p for shared arena\n", addr, addr+size));
 	errno = 0;
 	if ((addr = usconfig(CONF_ATTACHADDR, addr)) < 0 && errno != 0)
 		perror("usconfig - CONF_ATTACHADDR (set)");
@@ -157,7 +157,7 @@ static void PyThread__init_thread _P0()
 	(void) usinitlock(count_lock);
 	if ((wait_lock = usnewlock(shared_arena)) == NULL)
 		perror("usnewlock (wait_lock)");
-	dprintf(("arena start: %lx, arena size: %ld\n", (long) shared_arena, (long) usconfig(CONF_GETSIZE, shared_arena)));
+	dprintf(("arena start: %p, arena size: %ld\n",  shared_arena, (long) usconfig(CONF_GETSIZE, shared_arena)));
 }
 
 /*
@@ -224,7 +224,7 @@ int PyThread_start_new_thread _P2(func, void (*func) _P((void *)), arg, void *ar
 			if (usconfig(CONF_INITSIZE, size) < 0)
 				perror("usconfig - CONF_INITSIZE (reset)");
 			addr = (long) dl_getrange(size + HDR_SIZE);
-			dprintf(("trying to use addr %lx-%lx for sproc\n",
+			dprintf(("trying to use addr %p-%p for sproc\n",
 				 addr, addr+size));
 			errno = 0;
 			if ((addr = usconfig(CONF_ATTACHADDR, addr)) < 0 &&
@@ -375,13 +375,13 @@ PyThread_type_lock PyThread_allocate_lock _P0()
 	if ((lock = usnewlock(shared_arena)) == NULL)
 		perror("usnewlock");
 	(void) usinitlock(lock);
-	dprintf(("PyThread_allocate_lock() -> %lx\n", (long)lock));
+	dprintf(("PyThread_allocate_lock() -> %p\n", lock));
 	return (PyThread_type_lock) lock;
 }
 
 void PyThread_free_lock _P1(lock, PyThread_type_lock lock)
 {
-	dprintf(("PyThread_free_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_free_lock(%p) called\n", lock));
 	usfreelock((ulock_t) lock, shared_arena);
 }
 
@@ -389,7 +389,7 @@ int PyThread_acquire_lock _P2(lock, PyThread_type_lock lock, waitflag, int waitf
 {
 	int success;
 
-	dprintf(("PyThread_acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
+	dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
 	errno = 0;		/* clear it just in case */
 	if (waitflag)
 		success = ussetlock((ulock_t) lock);
@@ -397,13 +397,13 @@ int PyThread_acquire_lock _P2(lock, PyThread_type_lock lock, waitflag, int waitf
 		success = uscsetlock((ulock_t) lock, 1); /* Try it once */
 	if (success < 0)
 		perror(waitflag ? "ussetlock" : "uscsetlock");
-	dprintf(("PyThread_acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
+	dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
 	return success;
 }
 
 void PyThread_release_lock _P1(lock, PyThread_type_lock lock)
 {
-	dprintf(("PyThread_release_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_release_lock(%p) called\n", lock));
 	if (usunsetlock((ulock_t) lock) < 0)
 		perror("usunsetlock");
 }
@@ -420,13 +420,13 @@ PyThread_type_sema PyThread_allocate_sema _P1(value, int value)
 
 	if ((sema = usnewsema(shared_arena, value)) == NULL)
 		perror("usnewsema");
-	dprintf(("PyThread_allocate_sema() -> %lx\n", (long) sema));
+	dprintf(("PyThread_allocate_sema() -> %p\n",  sema));
 	return (PyThread_type_sema) sema;
 }
 
 void PyThread_free_sema _P1(sema, PyThread_type_sema sema)
 {
-	dprintf(("PyThread_free_sema(%lx) called\n", (long) sema));
+	dprintf(("PyThread_free_sema(%p) called\n",  sema));
 	usfreesema((usema_t *) sema, shared_arena);
 }
 
@@ -434,20 +434,20 @@ int PyThread_down_sema _P2(sema, PyThread_type_sema sema, waitflag, int waitflag
 {
 	int success;
 
-	dprintf(("PyThread_down_sema(%lx) called\n", (long) sema));
+	dprintf(("PyThread_down_sema(%p) called\n",  sema));
 	if (waitflag)
 		success = uspsema((usema_t *) sema);
 	else
 		success = uscpsema((usema_t *) sema);
 	if (success < 0)
 		perror(waitflag ? "uspsema" : "uscpsema");
-	dprintf(("PyThread_down_sema(%lx) return\n", (long) sema));
+	dprintf(("PyThread_down_sema(%p) return\n",  sema));
 	return success;
 }
 
 void PyThread_up_sema _P1(sema, PyThread_type_sema sema)
 {
-	dprintf(("PyThread_up_sema(%lx)\n", (long) sema));
+	dprintf(("PyThread_up_sema(%p)\n",  sema));
 	if (usvsema((usema_t *) sema) < 0)
 		perror("usvsema");
 }
diff --git a/Python/thread_solaris.h b/Python/thread_solaris.h
index 5fc7850bcb..978d07d0bd 100644
--- a/Python/thread_solaris.h
+++ b/Python/thread_solaris.h
@@ -157,13 +157,13 @@ PyThread_type_lock PyThread_allocate_lock _P0()
 		free((void *) lock);
 		lock = 0;
 	}
-	dprintf(("PyThread_allocate_lock() -> %lx\n", (long)lock));
+	dprintf(("PyThread_allocate_lock() -> %p\n", lock));
 	return (PyThread_type_lock) lock;
 }
 
 void PyThread_free_lock _P1(lock, PyThread_type_lock lock)
 {
-	dprintf(("PyThread_free_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_free_lock(%p) called\n", lock));
 	mutex_destroy((mutex_t *) lock);
 	free((void *) lock);
 }
@@ -172,7 +172,7 @@ int PyThread_acquire_lock _P2(lock, PyThread_type_lock lock, waitflag, int waitf
 {
 	int success;
 
-	dprintf(("PyThread_acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
+	dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
 	if (waitflag)
 		success = mutex_lock((mutex_t *) lock);
 	else
@@ -181,13 +181,13 @@ int PyThread_acquire_lock _P2(lock, PyThread_type_lock lock, waitflag, int waitf
 		perror(waitflag ? "mutex_lock" : "mutex_trylock");
 	else
 		success = !success; /* solaris does it the other way round */
-	dprintf(("PyThread_acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
+	dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
 	return success;
 }
 
 void PyThread_release_lock _P1(lock, PyThread_type_lock lock)
 {
-	dprintf(("PyThread_release_lock(%lx) called\n", (long)lock));
+	dprintf(("PyThread_release_lock(%p) called\n", lock));
 	if (mutex_unlock((mutex_t *) lock))
 		perror("mutex_unlock");
 }
@@ -208,13 +208,13 @@ PyThread_type_sema PyThread_allocate_sema _P1(value, int value)
 		free((void *) sema);
 		sema = 0;
 	}
-	dprintf(("PyThread_allocate_sema() -> %lx\n", (long) sema));
+	dprintf(("PyThread_allocate_sema() -> %p\n",  sema));
 	return (PyThread_type_sema) sema;
 }
 
 void PyThread_free_sema _P1(sema, PyThread_type_sema sema)
 {
-	dprintf(("PyThread_free_sema(%lx) called\n", (long) sema));
+	dprintf(("PyThread_free_sema(%p) called\n",  sema));
 	if (sema_destroy((sema_t *) sema))
 		perror("sema_destroy");
 	free((void *) sema);
@@ -224,7 +224,7 @@ int PyThread_down_sema _P2(sema, PyThread_type_sema sema, waitflag, int waitflag
 {
 	int success;
 
-	dprintf(("PyThread_down_sema(%lx) called\n", (long) sema));
+	dprintf(("PyThread_down_sema(%p) called\n",  sema));
 	if (waitflag)
 		success = sema_wait((sema_t *) sema);
 	else
@@ -237,13 +237,13 @@ int PyThread_down_sema _P2(sema, PyThread_type_sema sema, waitflag, int waitflag
 	}
 	else
 		success = !success;
-	dprintf(("PyThread_down_sema(%lx) return %d\n", (long) sema, success));
+	dprintf(("PyThread_down_sema(%p) return %d\n",  sema, success));
 	return success;
 }
 
 void PyThread_up_sema _P1(sema, PyThread_type_sema sema)
 {
-	dprintf(("PyThread_up_sema(%lx)\n", (long) sema));
+	dprintf(("PyThread_up_sema(%p)\n",  sema));
 	if (sema_post((sema_t *) sema))
 		perror("sema_post");
 }
diff --git a/Python/thread_wince.h b/Python/thread_wince.h
index 38ead12912..3e2cdb9dfb 100644
--- a/Python/thread_wince.h
+++ b/Python/thread_wince.h
@@ -144,14 +144,14 @@ PyThread_type_lock PyThread_allocate_lock(void)
 						1,              /* Is initially signalled  */
                         NULL);          /* Name of event            */
 
-    dprintf(("%ld: PyThread_allocate_lock() -> %lx\n", PyThread_get_thread_ident(), (long)aLock));
+    dprintf(("%ld: PyThread_allocate_lock() -> %p\n", PyThread_get_thread_ident(), aLock));
 
     return (PyThread_type_lock) aLock;
 }
 
 void PyThread_free_lock(PyThread_type_lock aLock)
 {
-    dprintf(("%ld: PyThread_free_lock(%lx) called\n", PyThread_get_thread_ident(),(long)aLock));
+    dprintf(("%ld: PyThread_free_lock(%p) called\n", PyThread_get_thread_ident(),aLock));
 
     CloseHandle(aLock);
 }
@@ -167,7 +167,7 @@ int PyThread_acquire_lock(PyThread_type_lock aLock, int waitflag)
     int success = 1;
     DWORD waitResult;
 
-    dprintf(("%ld: PyThread_acquire_lock(%lx, %d) called\n", PyThread_get_thread_ident(),(long)aLock, waitflag));
+    dprintf(("%ld: PyThread_acquire_lock(%p, %d) called\n", PyThread_get_thread_ident(),aLock, waitflag));
 
 #ifndef DEBUG
     waitResult = WaitForSingleObject(aLock, (waitflag == 1 ? INFINITE : 0));
@@ -185,17 +185,17 @@ int PyThread_acquire_lock(PyThread_type_lock aLock, int waitflag)
 		success = 0;    /* We failed */
     }
 
-	dprintf(("%ld: PyThread_acquire_lock(%lx, %d) -> %d\n", PyThread_get_thread_ident(),(long)aLock, waitflag, success));
+	dprintf(("%ld: PyThread_acquire_lock(%p, %d) -> %d\n", PyThread_get_thread_ident(),aLock, waitflag, success));
 
 	return success;
 }
 
 void PyThread_release_lock(PyThread_type_lock aLock)
 {
-    dprintf(("%ld: PyThread_release_lock(%lx) called\n", PyThread_get_thread_ident(),(long)aLock));
+    dprintf(("%ld: PyThread_release_lock(%p) called\n", PyThread_get_thread_ident(),aLock));
 
     if (!SetEvent(aLock))
-        dprintf(("%ld: Could not PyThread_release_lock(%lx) error: %l\n", PyThread_get_thread_ident(), (long)aLock, GetLastError()));
+        dprintf(("%ld: Could not PyThread_release_lock(%p) error: %l\n", PyThread_get_thread_ident(), aLock, GetLastError()));
 }