From dd6d96b7a91f287a6a60f1876c0f284c440fda61 Mon Sep 17 00:00:00 2001
From: Florian Fischer <florian.fischer@muhq.space>
Date: Mon, 17 May 2021 13:03:35 +0200
Subject: [PATCH] ignore maybe-uninitialized in LinkFutureTest needed by gcc
11.1.0
---
emper/Debug.hpp | 9 +++++++++
tests/io/LinkFutureTest.cpp | 6 ++++++
2 files changed, 15 insertions(+)
diff --git a/emper/Debug.hpp b/emper/Debug.hpp
index 7b7a4fae..9a15b39c 100644
--- a/emper/Debug.hpp
+++ b/emper/Debug.hpp
@@ -57,6 +57,15 @@
#define IGNORE_UNUSED_FUNCTION \
_Pragma("GCC diagnostic push") _Pragma("GCC diagnostic ignored \"-Wunused-function\"")
+// test for GCC > 11.1.0
+#if __GNUC__ > 11 || \
+ (__GNUC__ == 11 && (__GNUC_MINOR__ > 1 || (__GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ > 0)))
+#define IGNORE_MAYBE_UNINITIALIZED \
+ _Pragma("GCC diagnostic push") _Pragma("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
+#else
+#define IGNORE_MAYBE_UNINITIALIZED _Pragma("GCC diagnostic push")
+#endif
+
#define POP_DIAGNOSTIC _Pragma("GCC diagnostic pop")
enum class LogSubsystem {
diff --git a/tests/io/LinkFutureTest.cpp b/tests/io/LinkFutureTest.cpp
index f0f2d04d..14c15cb0 100644
--- a/tests/io/LinkFutureTest.cpp
+++ b/tests/io/LinkFutureTest.cpp
@@ -10,6 +10,7 @@
#include <cstdint> // for uint64_t, int32_t
#include "Common.hpp" // for DIE_MSG_ERRNO, DIE_MSG
+#include "Debug.hpp"
#include "io.hpp"
#include "io/Future.hpp" // for ReadFuture, CloseFuture, WriteFuture
@@ -79,7 +80,12 @@ static void successLoop() {
static void failureChainInvCor() {
std::array<char, 32> buf;
+
+ // GCC 11.1.0 reports that buf is not initialized.
+ // Which is totally fine because we read into it.
+ IGNORE_MAYBE_UNINITIALIZED
ReadFuture invalidReadFuture(-1, buf.data(), buf.size(), 0);
+ POP_DIAGNOSTIC
ReadFuture readFuture(0, buf.data(), buf.size(), 0);
readFuture.setDependency(invalidReadFuture);
--
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