From d5906305bc6711e352375f773f186c1139673d83 Mon Sep 17 00:00:00 2001
From: Luca Succi <luca.succi@stritzinger.com>
Date: Thu, 30 Apr 2026 18:10:27 +0200
Subject: [PATCH] Add new patch, required to build GDB 9.1 on latest MacOS

---
 rtems/.gitignore                                     |  1 +
 rtems/config/tools/rtems-gdb-9.1-1.cfg               |  2 ++
 .../gdb-9.1-darwin-clang-enum-constexpr.patch        | 12 ++++++++++++
 3 files changed, 15 insertions(+)
 create mode 100644 rtems/patches/gdb-9.1-darwin-clang-enum-constexpr.patch

diff --git a/rtems/.gitignore b/rtems/.gitignore
index 0b23d9e2..75fd1d72 100644
--- a/rtems/.gitignore
+++ b/rtems/.gitignore
@@ -7,6 +7,7 @@ patches/*
 !patches/gcc-7.5.0-zlib-darwin-fdopen.patch
 !patches/gcc-7.5.0-darwin-arm64-host-hooks.patch
 !patches/gdb-9.1-zlib-darwin-fdopen.patch
+!patches/gdb-9.1-darwin-clang-enum-constexpr.patch
 !patches/binutils-2.34-zlib-darwin-fdopen.patch
 tar
 build
diff --git a/rtems/config/tools/rtems-gdb-9.1-1.cfg b/rtems/config/tools/rtems-gdb-9.1-1.cfg
index 51dbea54..65420dd2 100644
--- a/rtems/config/tools/rtems-gdb-9.1-1.cfg
+++ b/rtems/config/tools/rtems-gdb-9.1-1.cfg
@@ -13,6 +13,8 @@
 %hash sha512 gdb-9-1-linker-error-fix.diff QAtNCgJsDdfKno+IqHwqRGz1SR3YdTm34ERox2fqpgaGHI6H4GqNfmkJcJaIvSgzNxif24vqWO+bF/Djqa6wNg==
 %patch add gdb --rsb-file=gdb-9.1-zlib-darwin-fdopen.patch -p1 file://%{_topdir}/patches/gdb-9.1-zlib-darwin-fdopen.patch
 %hash sha512 gdb-9.1-zlib-darwin-fdopen.patch ecdc7ce221dd0459230dc8acb3edf08827bb61f9856360c0ab8ad85754e484d1c7aeabf34a7789b75a457bcf59ced8f8b418b0e5fb6721545c3fe3741a0addd8
+%patch add gdb --rsb-file=gdb-9.1-darwin-clang-enum-constexpr.patch -p1 file://%{_topdir}/patches/gdb-9.1-darwin-clang-enum-constexpr.patch
+%hash sha512 gdb-9.1-darwin-clang-enum-constexpr.patch gTXe5w0Q99d0+RrpRnSS1o+2CQrM4iTzdbOmX7QjkTeHZvC4TuyrW2+89a43np+CjYYOnG5caNuJfMiVLgNmFA==
 
 %if %{_build_os} == win32
   %if %{_windows_os} == cygwin
diff --git a/rtems/patches/gdb-9.1-darwin-clang-enum-constexpr.patch b/rtems/patches/gdb-9.1-darwin-clang-enum-constexpr.patch
new file mode 100644
index 00000000..5b0b3582
--- /dev/null
+++ b/rtems/patches/gdb-9.1-darwin-clang-enum-constexpr.patch
@@ -0,0 +1,12 @@
+--- a/gdb/gdbsupport/enum-flags.h
++++ b/gdb/gdbsupport/enum-flags.h
+@@ -82,8 +82,7 @@ template<> struct integer_for_size<8, 1> { typedef int64_t type; };
+ template<typename T>
+ struct enum_underlying_type
+ {
+-  typedef typename
+-    integer_for_size<sizeof (T), static_cast<bool>(T (-1) < T (0))>::type
++  typedef typename std::underlying_type<T>::type
+     type;
+ };
+