From ba1cd19983f9a5d6824aa0fcf0714bc102699cc9 Mon Sep 17 00:00:00 2001
From: DS <ds.desour@proton.me>
Date: Sun, 26 Mar 2023 14:13:58 +0200
Subject: [PATCH] Use non-static member vars for SDL clipboard / primary
 selection buffers

---
 source/Irrlicht/COSOperator.cpp | 33 +++++++++++++++++++--------------
 source/Irrlicht/COSOperator.h   | 11 +++++++++++
 2 files changed, 30 insertions(+), 14 deletions(-)

diff --git a/source/Irrlicht/COSOperator.cpp b/source/Irrlicht/COSOperator.cpp
index 132232f..1c3baf9 100644
--- a/source/Irrlicht/COSOperator.cpp
+++ b/source/Irrlicht/COSOperator.cpp
@@ -30,7 +30,7 @@
 #include "fast_atof.h"
 
 #if defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
-static bool sdl_supports_primary_selection = [] {
+static const bool sdl_supports_primary_selection = [] {
 #if SDL_VERSION_ATLEAST(2, 25, 0)
 	SDL_version linked_version;
 	SDL_GetVersion(&linked_version);
@@ -62,6 +62,15 @@ COSOperator::COSOperator(const core::stringc& osVersion) : OperatingSystem(osVer
 }
 
 
+COSOperator::~COSOperator()
+{
+#ifdef _IRR_COMPILE_WITH_SDL_DEVICE_
+	SDL_free(ClipboardSelectionText);
+	SDL_free(PrimarySelectionText);
+#endif
+}
+
+
 //! returns the current operating system version as string.
 const core::stringc& COSOperator::getOperatingSystemVersion() const
 {
@@ -142,11 +151,9 @@ void COSOperator::copyToPrimarySelection(const c8 *text) const
 const c8* COSOperator::getTextFromClipboard() const
 {
 #if defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
-	static char *text = nullptr;
-	if (text)
-		SDL_free(text);
-	text = SDL_GetClipboardText();
-	return text;
+	SDL_free(ClipboardSelectionText);
+	ClipboardSelectionText = SDL_GetClipboardText();
+	return ClipboardSelectionText;
 
 #elif defined(_IRR_WINDOWS_API_)
 	if (!OpenClipboard(NULL))
@@ -195,19 +202,17 @@ const c8* COSOperator::getTextFromPrimarySelection() const
 #if defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
 #if SDL_VERSION_ATLEAST(2, 25, 0)
 	if (sdl_supports_primary_selection) {
-		static char *text = nullptr;
-		if (text)
-			SDL_free(text);
-		text = SDL_GetPrimarySelectionText();
-		return text;
+		SDL_free(PrimarySelectionText);
+		PrimarySelectionText = SDL_GetPrimarySelectionText();
+		return PrimarySelectionText;
 	}
 #endif
 	return 0;
 
 #elif defined(_IRR_COMPILE_WITH_X11_DEVICE_)
-    if ( IrrDeviceLinux )
-        return IrrDeviceLinux->getTextFromPrimarySelection();
-    return 0;
+	if ( IrrDeviceLinux )
+		return IrrDeviceLinux->getTextFromPrimarySelection();
+	return 0;
 
 #else
 
diff --git a/source/Irrlicht/COSOperator.h b/source/Irrlicht/COSOperator.h
index 6510579..941dacc 100644
--- a/source/Irrlicht/COSOperator.h
+++ b/source/Irrlicht/COSOperator.h
@@ -23,6 +23,11 @@ public:
 #endif
 	COSOperator(const core::stringc& osversion);
 
+	~COSOperator();
+
+	COSOperator(const COSOperator &) = delete;
+	COSOperator &operator=(const COSOperator &) = delete;
+
 	//! returns the current operation system version as string.
 	const core::stringc& getOperatingSystemVersion() const override;
 
@@ -56,6 +61,12 @@ private:
 	mutable core::stringc ClipboardBuf;
 #endif
 
+#ifdef _IRR_COMPILE_WITH_SDL_DEVICE_
+	// These need to be freed with SDL_free
+	mutable char *ClipboardSelectionText = nullptr;
+	mutable char *PrimarySelectionText = nullptr;
+#endif
+
 };
 
 } // end namespace