[Bug ipa/97660] [11 Regression] ICE: Segmentation fault in function_summary<clone_info*>::get(cgraph_node*) since r11-4587

[ibuclaw at gdcproject dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97660

--- Comment #1 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
The call statement being looked at by cgraph_edge::redirect_call_stmt_to_callee
is:

   # .MEM = VDEF <.MEM>
   _47 = __sync_val_compare_and_swap_8 (ptr_45, 0, new_node.0_46);

cgraph_node::get returns NULL on the __sync_val_compare_and_swap_8 decl at
cgraph.c:1494


This looks like it is expected to happen, given that the assert on the
following line used to be `gcc_assert (!node ||
!node->clone.param_adjustments);`.

The change that causes the segfault is:

   if (flag_checking && decl)
     {
       cgraph_node *node = cgraph_node::get (decl);
-      gcc_assert (!node || !node->clone.param_adjustments);
+      clone_info *info = clone_info::get (node);
+      gcc_assert (!node || !info || !info->param_adjustments);
     }