From 11610d9bbe0f0e4a42cca5503ff65f33b603b5c8 Mon Sep 17 00:00:00 2001
From: Duncan <duncans_pumpkin@hotmail.co.uk>
Date: Sat, 28 Sep 2024 05:53:59 +0100
Subject: [PATCH] Fix building debug (#22840)

ssizet is a non-standard POSIX addition
---
 .../drawing/engines/opengl/OpenGLDrawingEngine.cpp            | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/openrct2-ui/drawing/engines/opengl/OpenGLDrawingEngine.cpp b/src/openrct2-ui/drawing/engines/opengl/OpenGLDrawingEngine.cpp
index 3bedf9d20b..00f987d5c8 100644
--- a/src/openrct2-ui/drawing/engines/opengl/OpenGLDrawingEngine.cpp
+++ b/src/openrct2-ui/drawing/engines/opengl/OpenGLDrawingEngine.cpp
@@ -1150,8 +1150,8 @@ ScreenRect OpenGLDrawingContext::CalculateClipping(const DrawPixelInfo& dpi) con
     const int32_t bytesPerRow = screenDPI->LineStride();
     const int32_t bitsOffset = static_cast<int32_t>(dpi.bits - screenDPI->bits);
 #    ifndef NDEBUG
-    const ssize_t bitsSize = static_cast<ssize_t>(screenDPI->height) * static_cast<ssize_t>(bytesPerRow);
-    assert(static_cast<ssize_t>(bitsOffset) < bitsSize && static_cast<ssize_t>(bitsOffset) >= 0);
+    const ptrdiff_t bitsSize = static_cast<ptrdiff_t>(screenDPI->height) * static_cast<ptrdiff_t>(bytesPerRow);
+    assert(static_cast<ptrdiff_t>(bitsOffset) < bitsSize && static_cast<ptrdiff_t>(bitsOffset) >= 0);
 #    endif
 
     const int32_t left = bitsOffset % bytesPerRow;