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fix: IndexOfPattern alignment for multi-byte encodings

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Stride the scan by pattern.Length (1 for ASCII/UTF-8, 2 for UTF-16,
4 for UTF-32) to avoid matching a misaligned null-terminator pattern
mid-character.
This commit is contained in:
kbe
2026-07-21 19:34:01 +02:00
parent 6aaee0adce
commit 68255f907c
1 changed files with 2 additions and 1 deletions
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WhiteMagic/MemoryBase.cs
+2 -1
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@@ -273,7 +273,8 @@ public abstract class MemoryBase : IDisposable
private static int IndexOfPattern(byte[] data, byte[] pattern) private static int IndexOfPattern(byte[] data, byte[] pattern)
{ {
int lastStart = data.Length - pattern.Length; int lastStart = data.Length - pattern.Length;
for (int i = 0; i <= lastStart; i++) int stride = Math.Max(1, pattern.Length);
for (int i = 0; i <= lastStart; i += stride)
{ {
bool match = true; bool match = true;
for (int j = 0; j < pattern.Length; j++) for (int j = 0; j < pattern.Length; j++)