From 44ffe11932693ac6b0770380a88ab41ebbbea1a0 Mon Sep 17 00:00:00 2001
From: Arthur Cohen <arthur.cohen@embecosm.com>
Date: Wed, 28 Jun 2023 16:21:05 +0200
Subject: [PATCH] expected: Adapt type to GCC's requirements.

Disable exceptions and remove inclusion of poisoned headers.

gcc/rust/ChangeLog:

	* util/expected.h: Adapt class to GCC requirements.
---
 gcc/rust/util/expected.h | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/gcc/rust/util/expected.h b/gcc/rust/util/expected.h
index cbefafc9481b..a7ddd55a88d9 100644
--- a/gcc/rust/util/expected.h
+++ b/gcc/rust/util/expected.h
@@ -1,3 +1,4 @@
+// clang-format off
 ///
 // expected - An implementation of std::expected with extensions
 // Written in 2017 by Sy Brand (tartanllama@gmail.com, @TartanLlama)
@@ -20,10 +21,7 @@
 #define TL_EXPECTED_VERSION_MINOR 1
 #define TL_EXPECTED_VERSION_PATCH 0
 
-#include <exception>
-#include <functional>
-#include <type_traits>
-#include <utility>
+#include "rust-system.h"
 
 #if defined(__EXCEPTIONS) || defined(_CPPUNWIND)
 #define TL_EXPECTED_EXCEPTIONS_ENABLED
@@ -215,9 +213,7 @@ template <typename E>
 #else
   (void)e;
 #ifdef _MSC_VER
-  __assume(0);
-#else
-  __builtin_unreachable();
+  gcc_unreachable();
 #endif
 #endif
 }
-- 
2.47.3