Fix remote-sim.c build after warn-unused-result change

John Darrington pointed out that commit 18cb7c9f3 ("Introduce
ATTRIBUTE_UNUSED_RESULT and use it") broke the build:

/home/john/binutils-gdb/gdb/remote-sim.c: In function 'void gdbsim_target_open(const char*, int)':
/home/john/binutils-gdb/gdb/remote-sim.c:765:18: error: ignoring return value of 'char** gdb_argv::release()', declared with attribute warn_unused_result [-Werror=unused-result]

This patch fixes the problem by arranging to use the result of the
release method.

Tested by rebuilding with a simulator enabled.

gdb/ChangeLog
2019-03-06  Tom Tromey  <tromey@adacore.com>

	* remote-sim.c (gdbsim_target_open): Use result of
	gdb_argv::release.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 906af75..ac61e65 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2019-03-06  Tom Tromey  <tromey@adacore.com>
+
+       * remote-sim.c (gdbsim_target_open): Use result of
+       gdb_argv::release.
+
 2019-03-06  Richard Bunt  <richard.bunt@arm.com>
        Dirk Schubert  <dirk.schubert@arm.com>
        Chris January  <chris.january@arm.com>

diff --git a/gdb/remote-sim.c b/gdb/remote-sim.c
index 2acfc71..bef04e6 100644 (file)
--- a/gdb/remote-sim.c
+++ b/gdb/remote-sim.c
@@ -751,19 +751,18 @@ gdbsim_target_open (const char *args, int from_tty)
     }
 
   gdb_argv argv (arg_buf);
-  sim_argv = argv.get ();
+  sim_argv = argv.release ();
 
   init_callbacks ();
   gdbsim_desc = sim_open (SIM_OPEN_DEBUG, &gdb_callback, exec_bfd, sim_argv);
 
   if (gdbsim_desc == 0)
     {
+      freeargv (sim_argv);
       sim_argv = NULL;
       error (_("unable to create simulator instance"));
     }
 
-  argv.release ();
-
   /* Reset the pid numberings for this batch of sim instances.  */
   next_pid = INITIAL_PID;