From 9c616411bad8dadbc07b718e54f0ec4f0fe21f2a Mon Sep 17 00:00:00 2001
From: Kevin Ring <kevin@kotachrome.com>
Date: Wed, 6 Nov 2024 16:58:48 +1100
Subject: [PATCH] Fix C++20 compiler error when CESIUM_FORCE_ASSERTIONS is not
 defined.

---
 CesiumUtility/include/CesiumUtility/Assert.h | 4 +++-
 CesiumUtility/src/Assert.cpp                 | 5 ++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/CesiumUtility/include/CesiumUtility/Assert.h b/CesiumUtility/include/CesiumUtility/Assert.h
index aeb9b32a8..a567d3e19 100644
--- a/CesiumUtility/include/CesiumUtility/Assert.h
+++ b/CesiumUtility/include/CesiumUtility/Assert.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <cstdint>
+
 //
 // Define our own assertion, so that users can forcebly turn them on if needed
 //
@@ -7,7 +9,7 @@
 // Asserts are defined in cassert and normally compiled out when NDEBUG is
 // defined. Redirect to our own assertion that can't be compiled out
 namespace CesiumUtility {
-void forceAssertFailure();
+std::int32_t forceAssertFailure();
 };
 #define CESIUM_ASSERT(expression)                                              \
   ((expression) ? 0 : CesiumUtility::forceAssertFailure())
diff --git a/CesiumUtility/src/Assert.cpp b/CesiumUtility/src/Assert.cpp
index c8e0f7356..07effd58b 100644
--- a/CesiumUtility/src/Assert.cpp
+++ b/CesiumUtility/src/Assert.cpp
@@ -7,7 +7,10 @@
 #define NDEBUG
 
 namespace CesiumUtility {
-void forceAssertFailure() { assert(0 && "Assertion failed"); }
+std::int32_t forceAssertFailure() {
+  assert(0 && "Assertion failed");
+  return 1;
+}
 }; // namespace CesiumUtility
 
 #endif