[Bug lto/78049] [7 Regression] ICE in gcc/lto-streamer-in.c:901 when building Firefox with LTO and -O3

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78049

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
static void
fixup_call_stmt_edges_1 (struct cgraph_node *node, gimple **stmts,
                         struct function *fn)
{
  struct cgraph_edge *cedge;
  struct ipa_ref *ref = NULL;
  unsigned int i;

  for (cedge = node->callees; cedge; cedge = cedge->next_callee)
    {
      if (gimple_stmt_max_uid (fn) < cedge->lto_stmt_uid)
        fatal_error (input_location,
                     "Cgraph edge statement index out of range");
901    cedge->call_stmt = as_a <gcall *> (stmts[cedge->lto_stmt_uid - 1]);
      if (!cedge->call_stmt)

so it looks like cedge->lto_stmt_uid is out of bounds or out-of-sync.