fix #1266

Siv3D · Oct 2, 2024 · 360cd39 · 360cd39
1 parent 27a88e6
commit 360cd39
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/Siv3D/src/Siv3D/MemoryWriter/SivMemoryWriter.cpp b/Siv3D/src/Siv3D/MemoryWriter/SivMemoryWriter.cpp
@@ -59,7 +59,7 @@ namespace s3d
 			return 0;
 		}
 
-		if (sizeBytes == 0)
+		if (sizeBytes <= 0)
 		{
 			return 0;
 		}
@@ -68,7 +68,10 @@ namespace s3d
 
 		if (m_writePos != static_cast<int64>(m_blob.size()))
 		{
-			m_blob.resize(newSize);
+			if (m_blob.size() < newSize)
+			{
+				m_blob.resize(newSize);
+			}
 
 			std::memcpy(&m_blob[static_cast<size_t>(m_writePos)], src, sizeBytes);
 		}