gdb/breakpoint: make a copy of the "commands" command's argument

[thirdparty/binutils-gdb.git] / gdb / breakpoint.c

diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
index fff80ff907e39d0d7eb5ece3b886ef39af40d217..3fb259ff40964f1442d69121536957ae40b6fe5b 100644 (file)
--- a/gdb/breakpoint.c
+++ b/gdb/breakpoint.c
@@ -1229,13 +1229,23 @@ commands_command_1 (const char *arg, int from_tty,
 
   if (arg == NULL || !*arg)
     {
+      /* Argument not explicitly given.  Synthesize it.  */
       if (breakpoint_count - prev_breakpoint_count > 1)
        new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1,
                                 breakpoint_count);
       else if (breakpoint_count > 0)
        new_arg = string_printf ("%d", breakpoint_count);
-      arg = new_arg.c_str ();
     }
+  else
+    {
+      /* Create a copy of ARG.  This is needed because the "commands"
+        command may be coming from a script.  In that case, the read
+        line buffer is going to be overwritten in the lambda of
+        'map_breakpoint_numbers' below when reading the next line
+        before we are are done parsing the breakpoint numbers.  */
+      new_arg = arg;
+    }
+  arg = new_arg.c_str ();
 
   map_breakpoint_numbers
     (arg, [&] (breakpoint *b)