Exit code of exited inferiors in -list-thread-groups

Don't reset the exit code at inferior exit and print it in
-list-thread-groups.

gdb/ChangeLog:

	* NEWS: Announce new exit-code field in -list-thread-groups
	output.
	* inferior.c (exit_inferior_1): Don't clear exit code.
	(inferior_appeared): Clear exit code.
	* mi/mi-main.c (print_one_inferior): Add printing of the exit
	code.

gdb/testsuite/ChangeLog:

	* gdb.mi/mi-exit-code.exp: New file.
	* gdb.mi/mi-exit-code.c: New file.

gdb/doc/ChangeLog:

	* gdb.texinfo (Miscellaneous gdb/mi Commands): Document new
	exit-code field in -list-thread-groups output.

1 files changed, 3 insertions, 0 deletions

diff --git a/gdb/mi/mi-main.c b/gdb/mi/mi-main.c
index 59717ca..4d35ff0 100644
--- a/gdb/mi/mi-main.c
+++ b/gdb/mi/mi-main.c
@@ -658,6 +658,9 @@ print_one_inferior (struct inferior *inferior, void *xdata)
 
       ui_out_field_fmt (uiout, "id", "i%d", inferior->num);
       ui_out_field_string (uiout, "type", "process");
+      if (inferior->has_exit_code)
+	ui_out_field_string (uiout, "exit-code",
+			     int_string (inferior->exit_code, 8, 0, 0, 1));
       if (inferior->pid != 0)
 	ui_out_field_int (uiout, "pid", inferior->pid);