ISOReader: Fix possible integer overflow in GetSizeInSectors()

2 months ago · 6651f4d197
parent e0734381a3
commit 6651f4d197
1 changed files with 4 additions and 1 deletions
--- a/src/util/iso_reader.h
+++ b/src/util/iso_reader.h
@ -138,7 +138,10 @@ public:
    u8 filename_length;

    ALWAYS_INLINE bool IsDirectory() const { return (flags & ISODirectoryEntryFlag_Directory); }
-    ALWAYS_INLINE u32 GetSizeInSectors() const { return (length_le + (SECTOR_SIZE - 1)) / SECTOR_SIZE; }
+    ALWAYS_INLINE u32 GetSizeInSectors() const
+    {
+      return (length_le / SECTOR_SIZE) + static_cast<u32>((length_le % SECTOR_SIZE) != 0);
+    }
  };

 #pragma pack(pop)