From bde380f38b1d2a57d7d9aa35b7210a47085f41a7 Mon Sep 17 00:00:00 2001
From: ISSOtm <eldredhabert0@gmail.com>
Date: Sat, 5 Mar 2022 02:13:27 +0100
Subject: [PATCH] Fix unchecked narrowing conversion of tile IDs

The conversion is OK because of the tile amount cap
---
 src/gfx/convert.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/gfx/convert.cpp b/src/gfx/convert.cpp
index 0a0f84e6..c91a565f 100644
--- a/src/gfx/convert.cpp
+++ b/src/gfx/convert.cpp
@@ -634,7 +634,7 @@ class TileData {
 	// non-pathological cases.
 	uint16_t _hash;
 public:
-	mutable size_t tileID;
+	mutable uint16_t tileID;
 
 	TileData(Png::TilesVisitor::Tile const &tile, Palette const &palette) : _hash(0) {
 		size_t writeIndex = 0;
@@ -719,7 +719,7 @@ struct UniqueTiles {
 		TileData::MatchType matchType = TileData::EXACT;
 		if (inserted) {
 			// Give the new tile the next available unique ID
-			tileData->tileID = tiles.size();
+			tileData->tileID = static_cast<uint16_t>(tiles.size());
 			// Pointers are never invalidated!
 			tiles.emplace_back(&*tileData);
 		} else {