tools: iio: Set caller's ci_array pointer to NULL after free

On error, caller's ci_array is freed and set to NULL to avoid potential double free if some other user of this code is not sufficiently careful. Counter is reset to zero for consistency. Signed-off-by: Joo Aun Saw <[email protected]> Signed-off-by: Jonathan Cameron <[email protected]>
sfionov · Aug 8, 2015 · 6b20f40 · 6b20f40
1 parent bdb25b0
commit 6b20f40
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/tools/iio/iio_utils.c b/tools/iio/iio_utils.c
@@ -526,6 +526,8 @@ int build_channel_array(const char *device_dir,
 		free((*ci_array)[i].generic_name);
 	}
 	free(*ci_array);
+	*ci_array = NULL;
+	*counter = 0;
 error_close_dir:
 	if (dp)
 		if (closedir(dp) == -1)