[glibc/fw/bug25112] WIP fix other rollback issues related to malloc

[glibc/fw/bug25112] WIP fix other rollback issues related to malloc

[Florian Weimer]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9c623ce625ede3ebd5fad9568512ecc3edcd1549

commit 9c623ce625ede3ebd5fad9568512ecc3edcd1549
Author: Florian Weimer <fweimer@redhat.com>
Date:   Thu Oct 24 13:44:18 2019 +0200

    WIP fix other rollback issues related to malloc

Diff:
---
 elf/dl-open.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/elf/dl-open.c b/elf/dl-open.c
index 656b4d2..51e62dd 100644
--- a/elf/dl-open.c
+++ b/elf/dl-open.c
@@ -201,6 +201,25 @@ add_to_global (struct link_map *new)
   add_to_global_finish (new);
 }
 
+/* Single-linked list of pending allocations for l_scope updates of
+   existing maps.  The list elements also serve as the allocations to
+   use.  */
+struct pending_scope
+{
+  struct link_map *map;
+  size_t objcts_to_add;
+  struct pending_scope *next;
+};
+
+/* Allocates a new l_scope array for MAP with COUNT elements.  */
+static void
+allocate_pending_scope (struct pending_scope **head, struct link_map *map,
+			size_t to_add)
+{
+
+  return result;
+}
+
 /* Search link maps in all namespaces for the DSO that contains the object at
    address ADDR.  Returns the pointer to the link map of the matching DSO, or
    NULL if a match is not found.  */