From 17fef77e1cc5698bb76a0e810e52f802ae11a07e Mon Sep 17 00:00:00 2001
From: past-due <30942300+past-due@users.noreply.github.com>
Date: Mon, 24 Jun 2024 15:38:47 -0400
Subject: [PATCH] Fix: TextShaper::splitTextRuns handling of empty input

---
 lib/ivis_opengl/textdraw.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/ivis_opengl/textdraw.cpp b/lib/ivis_opengl/textdraw.cpp
index a922461f8de..6e71867014b 100644
--- a/lib/ivis_opengl/textdraw.cpp
+++ b/lib/ivis_opengl/textdraw.cpp
@@ -864,12 +864,16 @@ struct TextShaper
 	{
 		std::vector<TextRun> textRuns;
 #if defined(WZ_FRIBIDI_ENABLED)
-		FriBidiParType baseDirection;
+		FriBidiParType baseDirection = FRIBIDI_PAR_LTR;
 #endif
 	};
 
 	SplitTextRunsResult splitTextRuns(const std::vector<uint32_t>& codePoints, iV_fonts fontID)
 	{
+		if (codePoints.empty())
+		{
+			return {};
+		}
 		int codePoints_size = static_cast<int>(codePoints.size());
 #if SIZE_MAX > INT32_MAX
 		if (codePoints.size() > static_cast<size_t>(std::numeric_limits<int>::max()))