From 5210de9d8679fcff87661679abbf3d92bcfb925a Mon Sep 17 00:00:00 2001
From: EmilDohne <86836589+EmilDohne@users.noreply.github.com>
Date: Wed, 16 Oct 2024 13:20:46 +0200
Subject: [PATCH] Fix UB if uncompressedIn is zero-sized

---
 CMakePresets.json                               | 4 ----
 PhotoshopAPI/src/Core/Compression/Compression.h | 4 ++++
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/CMakePresets.json b/CMakePresets.json
index e6c64651..5a320508 100644
--- a/CMakePresets.json
+++ b/CMakePresets.json
@@ -15,10 +15,6 @@
           "type": "equals",
           "lhs": "${hostSystemName}",
           "rhs": "Windows"
-        },
-        "environment": {
-          "CFLAGS": "/fsanitize=address /Zi",
-          "CXXFLAGS": "/fsanitize=address /Zi"
         }
       },
       {
diff --git a/PhotoshopAPI/src/Core/Compression/Compression.h b/PhotoshopAPI/src/Core/Compression/Compression.h
index 3011bcc8..9115f850 100644
--- a/PhotoshopAPI/src/Core/Compression/Compression.h
+++ b/PhotoshopAPI/src/Core/Compression/Compression.h
@@ -64,6 +64,10 @@ inline std::vector<uint8_t> CompressData(std::span<T> uncompressedIn, std::span<
 {
 	if (compression == Enum::Compression::Raw)
 	{
+		if (uncompressedIn.size() == 0)
+		{
+			return {};
+		}
 		endianEncodeBEArray(uncompressedIn);
 		std::vector<uint8_t> data(uncompressedIn.size() * sizeof(T));
 		std::memcpy(reinterpret_cast<void*>(data.data()), reinterpret_cast<void*>(uncompressedIn.data()), data.size());