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[binutils-gdb] Free results of varobj_get_type and type_to_string
- From: Simon Marchi <simark at sourceware dot org>
- To: gdb-cvs at sourceware dot org
- Date: 30 Jan 2015 18:55:15 -0000
- Subject: [binutils-gdb] Free results of varobj_get_type and type_to_string
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=afa269ae41673cd5cc5f50d683a0f2d275a643e8
commit afa269ae41673cd5cc5f50d683a0f2d275a643e8
Author: Simon Marchi <simon.marchi@ericsson.com>
Date: Fri Jan 30 13:54:50 2015 -0500
Free results of varobj_get_type and type_to_string
varobj_get_type and type_to_string return an allocated string, which is
not freed at a couple of places.
New in v2:
* Rename char * type to type_name.
* Free in all cases in update_type_if_necessary.
gdb/ChangeLog:
* mi/mi-cmd-var.c (mi_cmd_var_info_type): Free result of
varobj_get_type.
(varobj_update_one): Same.
* varobj.c (update_type_if_necessary): Free curr_type_str and
new_type_str.
(varobj_get_type): Specify in comment that the result needs to be
freed by the caller.
Diff:
---
gdb/ChangeLog | 10 ++++++++++
gdb/mi/mi-cmd-var.c | 13 +++++++++++--
gdb/varobj.c | 10 ++++++++--
3 files changed, 29 insertions(+), 4 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index af5da9b..3f3f3f3 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,13 @@
+2015-01-30 Simon Marchi <simon.marchi@ericsson.com>
+
+ * mi/mi-cmd-var.c (mi_cmd_var_info_type): Free result of
+ varobj_get_type.
+ (varobj_update_one): Same.
+ * varobj.c (update_type_if_necessary): Free curr_type_str and
+ new_type_str.
+ (varobj_get_type): Specify in comment that the result needs to be
+ freed by the caller.
+
2015-01-29 Doug Evans <dje@google.com>
PR symtab/17890
diff --git a/gdb/mi/mi-cmd-var.c b/gdb/mi/mi-cmd-var.c
index 01838b1..d873a17 100644
--- a/gdb/mi/mi-cmd-var.c
+++ b/gdb/mi/mi-cmd-var.c
@@ -447,14 +447,18 @@ mi_cmd_var_info_type (char *command, char **argv, int argc)
{
struct ui_out *uiout = current_uiout;
struct varobj *var;
+ char *type_name;
if (argc != 1)
error (_("-var-info-type: Usage: NAME."));
/* Get varobj handle, if a valid var obj name was specified. */
var = varobj_get_handle (argv[0]);
+ type_name = varobj_get_type (var);
- ui_out_field_string (uiout, "type", varobj_get_type (var));
+ ui_out_field_string (uiout, "type", type_name);
+
+ xfree (type_name);
}
void
@@ -765,7 +769,12 @@ varobj_update_one (struct varobj *var, enum print_values print_values,
}
if (r->type_changed)
- ui_out_field_string (uiout, "new_type", varobj_get_type (r->varobj));
+ {
+ char *type_name = varobj_get_type (r->varobj);
+
+ ui_out_field_string (uiout, "new_type", type_name);
+ xfree (type_name);
+ }
if (r->type_changed || r->children_changed)
ui_out_field_int (uiout, "new_num_children",
diff --git a/gdb/varobj.c b/gdb/varobj.c
index a10560f..dad284d 100644
--- a/gdb/varobj.c
+++ b/gdb/varobj.c
@@ -972,7 +972,8 @@ varobj_add_child (struct varobj *var, struct varobj_item *item)
}
/* Obtain the type of an object Variable as a string similar to the one gdb
- prints on the console. */
+ prints on the console. The caller is responsible for freeing the string.
+ */
char *
varobj_get_type (struct varobj *var)
@@ -1289,11 +1290,16 @@ update_type_if_necessary (struct varobj *var, struct value *new_value)
{
struct type *new_type;
char *curr_type_str, *new_type_str;
+ int type_name_changed;
new_type = value_actual_type (new_value, 0, 0);
new_type_str = type_to_string (new_type);
curr_type_str = varobj_get_type (var);
- if (strcmp (curr_type_str, new_type_str) != 0)
+ type_name_changed = strcmp (curr_type_str, new_type_str) != 0;
+ xfree (curr_type_str);
+ xfree (new_type_str);
+
+ if (type_name_changed)
{
var->type = new_type;