diff mbox series

Use scoped_restore in varobj.c

Message ID 20230424182711.726180-1-tromey@adacore.com
State New
Headers
Series Use scoped_restore in varobj.c |

Commit Message

Tom Tromey April 24, 2023, 6:27 p.m. UTC 
  One spot in varobj.c should use scoped_restore to save and restore
input_radix.  Note that the current code may fail to restore it on
error, so this patch fixes a latent bug.
---
 gdb/varobj.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

Comments

Simon Marchi April 24, 2023, 7:35 p.m. UTC | #1 
On 4/24/23 14:27, Tom Tromey via Gdb-patches wrote:
> One spot in varobj.c should use scoped_restore to save and restore
> input_radix.  Note that the current code may fail to restore it on
> error, so this patch fixes a latent bug.

Thanks, LGTM.

Approved-By: Simon Marchi <simon.marchi@efficios.com>

Simon
diff mbox series

Patch

diff --git a/gdb/varobj.c b/gdb/varobj.c
index 2c35b911bad..5a5e55c2d82 100644
--- a/gdb/varobj.c
+++ b/gdb/varobj.c
@@ -970,12 +970,12 @@  varobj_set_value (struct varobj *var, const char *expression)
      We need to first construct a legal expression for this -- ugh!  */
   /* Does this cover all the bases?  */
   struct value *value = NULL; /* Initialize to keep gcc happy.  */
-  int saved_input_radix = input_radix;
   const char *s = expression;
 
   gdb_assert (varobj_editable_p (var));
 
-  input_radix = 10;		/* ALWAYS reset to decimal temporarily.  */
+  /* ALWAYS reset to decimal temporarily.  */
+  auto save_input_radix = make_scoped_restore (&input_radix, 10);
   expression_up exp = parse_exp_1 (&s, 0, 0, 0);
   try
     {
@@ -1022,7 +1022,6 @@  varobj_set_value (struct varobj *var, const char *expression)
      'updated' flag.  There's no need to optimize that, because return value
      of -var-update should be considered an approximation.  */
   var->updated = install_new_value (var, val, false /* Compare values.  */);
-  input_radix = saved_input_radix;
   return true;
 }