Backport "Add a recursion limit to the demangle_const function in the Rust demangler."

And related patches. Also fix bogus date on changelog
Resolves: RHEL-7330

_gdb.spec.Patch.include

@@ -293,3 +293,11 @@ Patch068: gdb-backport-call-check_typedef-at-beginning-of-dwarf_expr_context.pat
 # (Nick Clifton, RHBZ 2153228)
 Patch069: gdb-rhbz2153228-fail-if-sh_info-is-zero.patch
 
+# Backport Add a recursion limit to the demangle_const function in the Rust demangler.
+# (Nick Clifton, RHEL-4234)
+Patch070: libiberty-infinite-recursion-fix-1-of-2.patch
+
+# Backport Fix typo in recent code to add stack recursion limit to the Rust demangler.
+# (Nick Clifton)
+Patch071: libiberty-infinite-recursion-fix-2-of-2.patch
+

_gdb.spec.patch.include

@@ -67,3 +67,5 @@
 %patch067 -p1
 %patch068 -p1
 %patch069 -p1
+%patch070 -p1
+%patch071 -p1

_patch_order

@@ -67,3 +67,5 @@ gdb-backport-python-config-replace-deprecated-distutils.patch
 gdb-gcc-13-backport-self-move-diagnostic-fix
 gdb-backport-call-check_typedef-at-beginning-of-dwarf_expr_context.patch
 gdb-rhbz2153228-fail-if-sh_info-is-zero.patch
+libiberty-infinite-recursion-fix-1-of-2.patch
+libiberty-infinite-recursion-fix-2-of-2.patch

gdb.spec

@@ -73,7 +73,7 @@ Version: 12.1
 
 # The release always contains a leading reserved number, start it at 1.
 # `upstream' is not a part of `name' to stay fully rpm dependencies compatible for the testing.
-Release: 3%{?dist}
+Release: 4%{?dist}
 
 License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ and GPLv2+ with exceptions and GPL+ and LGPLv2+ and LGPLv3+ and BSD and Public Domain and GFDL
 # Do not provide URL for snapshots as the file lasts there only for 2 days.
@@ -1205,6 +1205,12 @@ fi
 %endif
 
 %changelog
+* Tue Oct 10 2023 Guinevere Larsen <blarsen@redhat.com> - 12.1-4.el9
+- Backport "Fix typo in recent code to add stack recursion limit to the Rust demangler."
+  (Nick Clifton)
+- Backport "Add a recursion limit to the demangle_const function in the Rust demangler."
+  (Nick Clifton, RHEL-4234)
+
 * Tue Jun 13 2023 Keith Seitz <keiths@redhat.com> - 12.1-3.el9
 - Backport "Update gdb-add-index.sh ..."
   (Andrew Burgess, RHBZ 2213228)

libiberty-infinite-recursion-fix-1-of-2.patch

@@ -0,0 +1,85 @@
+From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
+From: Nick Clifton <nickc@redhat.com>
+Date: Fri, 1 Jul 2022 15:58:52 +0100
+Subject: libiberty-infinite-recursion-fix-1-of-2.patch
+
+;; Backport Add a recursion limit to the demangle_const function in the Rust demangler.
+;; (Nick Clifton, RHEL-4234)
+
+libiberty/
+	PR demangler/105039
+	* rust-demangle.c (demangle_const): Add recursion limit.
+
+diff --git a/libiberty/rust-demangle.c b/libiberty/rust-demangle.c
+--- a/libiberty/rust-demangle.c
++++ b/libiberty/rust-demangle.c
+@@ -126,7 +126,7 @@ parse_integer_62 (struct rust_demangler *rdm)
+     return 0;
+ 
+   x = 0;
+-  while (!eat (rdm, '_'))
++  while (!eat (rdm, '_') && !rdm->errored)
+     {
+       c = next (rdm);
+       x *= 62;
+@@ -1148,6 +1148,15 @@ demangle_const (struct rust_demangler *rdm)
+   if (rdm->errored)
+     return;
+ 
++  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 recursion limit has been reached.  */
++	goto fail_return;
++    }
++
+   if (eat (rdm, 'B'))
+     {
+       backref = parse_integer_62 (rdm);
+@@ -1158,7 +1167,7 @@ demangle_const (struct rust_demangler *rdm)
+           demangle_const (rdm);
+           rdm->next = old_next;
+         }
+-      return;
++      goto pass_return;
+     }
+ 
+   ty_tag = next (rdm);
+@@ -1167,7 +1176,7 @@ demangle_const (struct rust_demangler *rdm)
+     /* Placeholder. */
+     case 'p':
+       PRINT ("_");
+-      return;
++      goto pass_return;
+ 
+     /* Unsigned integer types. */
+     case 'h':
+@@ -1200,18 +1209,20 @@ demangle_const (struct rust_demangler *rdm)
+       break;
+ 
+     default:
+-      rdm->errored = 1;
+-      return;
++      goto fail_return;
+     }
+ 
+-  if (rdm->errored)
+-    return;
+-
+-  if (rdm->verbose)
++  if (!rdm->errored && rdm->verbose)
+     {
+       PRINT (": ");
+       PRINT (basic_type (ty_tag));
+     }
++
++ fail_return:
++  rdm->errored = 1;
++ pass_return:
++  if (rdm->recursion != RUST_NO_RECURSION_LIMIT)
++    -- rdm->recursion;
+ }
+ 
+ static void

libiberty-infinite-recursion-fix-2-of-2.patch

@@ -0,0 +1,23 @@
+From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
+From: Nick Clifton <nickc@redhat.com>
+Date: Mon, 4 Jul 2022 16:31:18 +0100
+Subject: libiberty-infinite-recursion-fix-2-of-2.patch
+
+;; Backport Fix typo in recent code to add stack recursion limit to the Rust demangler.
+;; (Nick Clifton)
+
+libiberty
+	* rust-demangle.c (demangle_const): Add a missing goto pass_return
+	at the end of the function.
+
+diff --git a/libiberty/rust-demangle.c b/libiberty/rust-demangle.c
+--- a/libiberty/rust-demangle.c
++++ b/libiberty/rust-demangle.c
+@@ -1217,6 +1217,7 @@ demangle_const (struct rust_demangler *rdm)
+       PRINT (": ");
+       PRINT (basic_type (ty_tag));
+     }
++  goto pass_return;
+ 
+  fail_return:
+   rdm->errored = 1;