[PATCH] ipa: Fix segmentation fault in function_summary::get(cgraph_node*) (PR 97660)

[Iain Buclaw via Gcc-patches]

Hi,

PR 97660 occurs when cgraph_node::get returns NULL, and this NULL
cgraph_node is then passed to clone_info::get.  As the original assert
prior to the regressing change in r11-4587 allowed for the cgraph_node
to be NULL, clone_info::get is now only called when cgraph_node::get
returns a nonnull value.

Tested on x86_64-freebsd12.2 to confirm the bootstrap regression no
longer happens.  OK for mainline?

Regards
Iain

---
gcc/ChangeLog:

        PR ipa/97660
        * cgraph.c (cgraph_edge::redirect_call_stmt_to_callee): Don't call
        clone_info::get when cgraph_node::get returns NULL.
---
 gcc/cgraph.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/gcc/cgraph.c b/gcc/cgraph.c
index 9f3a7284310..36bdb009bf8 100644
--- a/gcc/cgraph.c
+++ b/gcc/cgraph.c
@@ -1491,9 +1491,11 @@ cgraph_edge::redirect_call_stmt_to_callee (cgraph_edge 
*e)
     }
   if (flag_checking && decl)
     {
-      cgraph_node *node = cgraph_node::get (decl);
-      clone_info *info = clone_info::get (node);
-      gcc_assert (!node || !info || !info->param_adjustments);
+      if (cgraph_node *node = cgraph_node::get (decl))
+       {
+         clone_info *info = clone_info::get (node);
+         gcc_assert (!info || !info->param_adjustments);
+       }
     }
 
   clone_info *callee_info = clone_info::get (e->callee);
-- 
2.27.0