use mrb_debug_strdup() and mrb_debug_strndup()

As they are safer to use than mrb_malloc()+strlen()+strncpy() (see #2652).

1 files changed, 2 insertions, 4 deletions

diff --git a/mrbgems/mruby-bin-debugger/tools/mrdb/cmdmisc.c b/mrbgems/mruby-bin-debugger/tools/mrdb/cmdmisc.c
index 74e10ab5a..7b0806eff 100755
--- a/mrbgems/mruby-bin-debugger/tools/mrdb/cmdmisc.c
+++ b/mrbgems/mruby-bin-debugger/tools/mrdb/cmdmisc.c
@@ -8,6 +8,7 @@
 #include <string.h>
 
 #include "apilist.h"
+#include "apistring.h"
 #include "mruby/compile.h"
 
 typedef struct help_msg {
@@ -226,10 +227,7 @@ parse_filename(mrb_state *mrb, char **sp, listcmd_parser_state *st)
     len = strlen(*sp);
   }
 
-  if (len > 0) {
-    st->filename = mrb_malloc(mrb, len + 1);
-    strncpy(st->filename, *sp, len);
-    st->filename[len] = '\0';
+  if (len > 0 && (st->filename = mrb_debug_strndup(mrb, *sp, len)) != NULL) {
     *sp += len;
     return TRUE;
   }