Hurd: In the CLI, use parse_thread_id instead of global_thread_id_to_ptid

Follow-up to commit 14f6890677849172a4b13779acd9089c9baa3a81.
global_thread_id_to_ptid expects global thread numbers, which are nowadays only
used in MI, never presented to the user in the CLI.  Since this is a CLI
command, it should accept the inferior-qualified format instead.

	gdb/
	* gnu-nat.c (set_sig_thread_cmd): Use parse_thread_id instead of
	global_thread_id_to_ptid.

2 files changed, 10 insertions, 8 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 171d03a..2bd99f1 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2016-12-08  Simon Marchi  <simon.marchi@ericsson.com>
+	    Thomas Schwinge  <thomas@codesourcery.com>
+
+	* gnu-nat.c (set_sig_thread_cmd): Use parse_thread_id instead of
+	global_thread_id_to_ptid.
+
 2016-12-08  Thomas Schwinge  <thomas@codesourcery.com>
 
 	* config/i386/i386gnu.mh (%_S.o %_U.o): Add "-x c" to
diff --git a/gdb/gnu-nat.c b/gdb/gnu-nat.c
index 5fd59a2..124574e 100644
--- a/gdb/gnu-nat.c
+++ b/gdb/gnu-nat.c
@@ -63,6 +63,7 @@ extern "C"
 #include "gdbcore.h"
 #include "gdbthread.h"
 #include "gdb_obstack.h"
+#include "tid-parse.h"
 
 #include "gnu-nat.h"
 #include "inf-child.h"
@@ -2975,19 +2976,14 @@ set_sig_thread_cmd (char *args, int from_tty)
 
   if (!args || (!isdigit (*args) && strcmp (args, "none") != 0))
     error (_("Illegal argument to \"set signal-thread\" command.\n"
-	   "Should be an integer thread ID, or `none'."));
+	     "Should be a thread ID, or \"none\"."));
 
   if (strcmp (args, "none") == 0)
     inf->signal_thread = 0;
   else
     {
-      ptid_t ptid = global_thread_id_to_ptid (atoi (args));
-
-      if (ptid_equal (ptid, minus_one_ptid))
-	error (_("Thread ID %s not known.  "
-		 "Use the \"info threads\" command to\n"
-	       "see the IDs of currently known threads."), args);
-      inf->signal_thread = inf_tid_to_thread (inf, ptid_get_lwp (ptid));
+      struct thread_info *tp = parse_thread_id (args, NULL);
+      inf->signal_thread = inf_tid_to_thread (inf, ptid_get_lwp (tp->ptid));
     }
 }