[ob/pushed] gdb/darwin-nat.c: Fix "cast to pointer from integer of different size" warning

[Pedro Alves <palves@redhat.com>]

Fixes, with gcc 5.3.0:

 .../src/gdb/darwin-nat.c: In function 'void darwin_resume_thread(inferior*, darwin_thread_t*, int, int)':
 .../src/gdb/darwin-nat.c:731:21: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
     (caddr_t)thread->gdb_port, nsignal);
		      ^
 .../src/gdb/darwin-nat.c:84:35: note: in definition of macro 'PTRACE'
   darwin_ptrace(#CMD, CMD, (PID), (ADDR), (SIG))
				    ^

thread->gdb_port is an unsigned int, caddr_t is a void pointer.

gdb/ChangeLog:
2016-04-20  Pedro Alves  <palves@redhat.com>

	* darwin-nat.c (darwin_resume_thread): Add uintptr_t cast.
---
 gdb/ChangeLog    | 4 ++++
 gdb/darwin-nat.c | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index f89f745..0f13721 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2016-04-20  Pedro Alves  <palves@redhat.com>
+
+	* darwin-nat.c (darwin_resume_thread): Add uintptr_t cast.
+
 2016-04-20  Doug Evans  <xdje42@gmail.com>
 
 	* symmisc.c (dump_symtab_1): Print owning compunit for identical
diff --git a/gdb/darwin-nat.c b/gdb/darwin-nat.c
index 082a056..16294b2 100644
--- a/gdb/darwin-nat.c
+++ b/gdb/darwin-nat.c
@@ -728,7 +728,7 @@ darwin_resume_thread (struct inferior *inf, darwin_thread_t *thread,
 	{
 	  /* Either deliver a new signal or cancel the signal received.  */
 	  res = PTRACE (PT_THUPDATE, inf->pid,
-			(caddr_t)thread->gdb_port, nsignal);
+			(caddr_t) (uintptr_t) thread->gdb_port, nsignal);
 	  if (res < 0)
 	    inferior_debug (1, _("ptrace THUP: res=%d\n"), res);
 	}
-- 
2.5.5