libfdisk: fix uninitialized fdisk_labelitem

fdisk -l could crash randomly. Only seen on some i586 systems with
certain exotic compiler options.

The problem was that this item is later used in
function fdisk_reset_labelitem() like this:

    if (li->type == 's')
        free(li->data.str);

This may crash if item is randomly initialized.

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>

diff --git a/libfdisk/src/label.c b/libfdisk/src/label.c
index 5cbbe422e84d62c182a44e80e264ab9d59e25b4c..0e83fdf34bbc04f05735ed5ee25aeed537e48b1e 100644 (file)
--- a/libfdisk/src/label.c
+++ b/libfdisk/src/label.c
@@ -416,7 +416,7 @@ int fdisk_locate_disklabel(struct fdisk_context *cxt, int n, const char **name,
  */
 int fdisk_get_disklabel_id(struct fdisk_context *cxt, char **id)
 {
-       struct fdisk_labelitem item;
+       struct fdisk_labelitem item = {0};
        int rc;
 
        if (!cxt || !cxt->label || !id)