From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Guinevere Larsen <blarsen@redhat.com>
Date: Mon, 30 Oct 2023 12:48:01 +0100
Subject: libiberty-infinite-recursion-fix-3-of-3.patch

fix backport error in patch 1 of this series.

diff --git a/libiberty/rust-demangle.c b/libiberty/rust-demangle.c
--- a/libiberty/rust-demangle.c
+++ b/libiberty/rust-demangle.c
@@ -1082,6 +1082,18 @@ demangle_path_maybe_open_generics (struct rust_demangler *rdm)
   if (rdm->errored)
     return open;
 
+  if (rdm->recursion != RUST_NO_RECURSION_LIMIT)
+  {
+    ++ rdm ->recursion;
+    if (rdm->recursion > RUST_MAX_RECURSION_COUNT)
+      {
+	/* FIXME: there ought to be a way to report
+	   that the recorsion limit has been reached.  */
+	rdm->errored = 1;
+	goto end_of_func;
+      }
+  }
+
   if (eat (rdm, 'B'))
     {
       backref = parse_integer_62 (rdm);
@@ -1107,6 +1119,10 @@ demangle_path_maybe_open_generics (struct rust_demangler *rdm)
     }
   else
     demangle_path (rdm, 0);
+ end_of_func:
+  if (rdm->recursion != RUST_NO_RECURSION_LIMIT)
+    -- rdm->recursion;
+
   return open;
 }