[PATCH] Fix C++ build error by casting void *

[PATCH] Fix C++ build error by casting void *

[Yao Qi]

Two recent patches breaks GDB C++ mode build,

  https://sourceware.org/ml/gdb-patches/2016-01/msg00150.html
  https://sourceware.org/ml/gdb-patches/2016-01/msg00086.html

gdb/remote.c: In function 'int remote_set_syscall_catchpoint(target_ops*, int, int, int, int, int*)':
gdb/remote.c:2036:39: error: invalid conversion from 'void*' to 'char*' [-fpermissive]
       catch_packet = xmalloc (maxpktsz);
                                       ^

gdb/thread.c: In function 'int do_captured_thread_select(ui_out*, void*)':
gdb/git/gdb/thread.c:1999:24: error: invalid conversion from 'void*' to 'const char*' [-fpermissive]
   const char *tidstr = tidstr_v;
                        ^

this patch fixes them by casting void * to the right type.  I'll push
it in.

gdb:

2016-01-14  Yao Qi  <yao.qi@linaro.org>

	* remote.c (remote_set_syscall_catchpoint): Cast to char *.
	* thread.c (do_captured_thread_select): Cast to const char *.
---
 gdb/remote.c | 2 +-
 gdb/thread.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gdb/remote.c b/gdb/remote.c
index 8b63708..d5701e3 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -2033,7 +2033,7 @@ remote_set_syscall_catchpoint (struct target_ops *self,
 	 big, fallback on the non-selective packet.  */
       const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1;
 
-      catch_packet = xmalloc (maxpktsz);
+      catch_packet = (char *) xmalloc (maxpktsz);
       strcpy (catch_packet, "QCatchSyscalls:1");
       if (!any_count)
 	{
diff --git a/gdb/thread.c b/gdb/thread.c
index cdd2a2f..b3b3995 100644
--- a/gdb/thread.c
+++ b/gdb/thread.c
@@ -1996,7 +1996,7 @@ show_print_thread_events (struct ui_file *file, int from_tty,
 static int
 do_captured_thread_select (struct ui_out *uiout, void *tidstr_v)
 {
-  const char *tidstr = tidstr_v;
+  const char *tidstr = (const char *) tidstr_v;
   struct thread_info *tp;
 
   if (ui_out_is_mi_like_p (uiout))
-- 
1.9.1