From: Antonio Borneo <borneo.antonio@gmail.com>
Date: Fri, 23 Oct 2020 14:45:35 +0000 (+0200)
Subject: target: handle command 'target current' when no target is present
X-Git-Tag: v0.11.0-rc1~72
X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=commitdiff_plain;h=65de0d3bfa14c59c2fea31a2974dd3492ac3320d

target: handle command 'target current' when no target is present

Is it possible to run OpenOCD without any target, for example to
only dump the rom-tables of an arm dap, or to perform low level
jtag operations.
But without any target created, the command 'target current'
causes OpenOCD to abruptly exit.

Handle in command 'target current' the case of no targets.

Change-Id: Ide15cb13bec84b88ccc3e7126523c04a6d70e636
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5881
Tested-by: jenkins
---

diff --git a/src/target/target.c b/src/target/target.c
index 9443f6c860..e2e614ffa3 100644
--- a/src/target/target.c
+++ b/src/target/target.c
@@ -5699,7 +5699,9 @@ static int jim_target_current(Jim_Interp *interp, int argc, Jim_Obj *const *argv
 	struct command_context *cmd_ctx = current_command_context(interp);
 	assert(cmd_ctx != NULL);
 
-	Jim_SetResultString(interp, target_name(get_current_target(cmd_ctx)), -1);
+	struct target *target = get_current_target_or_null(cmd_ctx);
+	if (target)
+		Jim_SetResultString(interp, target_name(target), -1);
 	return JIM_OK;
 }