From d4443ed494e82788df07d982c5c748f1b77763b6 Mon Sep 17 00:00:00 2001
From: Eugene Sandulenko <sev@scummvm.org>
Date: Sat, 16 Oct 2021 13:34:16 +0300
Subject: [PATCH] AD: Correctly process small files

---
 engines/advancedDetector.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/engines/advancedDetector.cpp b/engines/advancedDetector.cpp
index 4e7626f3126..b84f393c4aa 100644
--- a/engines/advancedDetector.cpp
+++ b/engines/advancedDetector.cpp
@@ -544,8 +544,10 @@ static bool getFilePropertiesIntern(uint md5Bytes, const AdvancedMetaEngine::Fil
 	if (!testFile.open(allFiles[fname]))
 		return false;
 
-	if (game.flags & ADGF_TAILMD5)
-		testFile.seek(md5Bytes, SEEK_END);
+	if (game.flags & ADGF_TAILMD5) {
+		if (testFile.size() > md5Bytes)
+			testFile.seek(md5Bytes, SEEK_END);
+	}
 
 	fileProps.size = testFile.size();
 	fileProps.md5 = Common::computeStreamMD5AsString(testFile, md5Bytes);