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.
Blocking fixes:
1. Read<T> now returns default(T) on failed/partial read instead of crash
(applies to single Read<T>, array Read<T>, and ReadBytes)
2. InProcessReader uses ReadProcessMemory via handle instead of unsafe
Buffer.MemoryCopy — fails soft on bad address instead of AV'ing
3. GetRelative now returns absolute - ImageBase (inverse of GetAbsolute).
Fix round-trip test to validate at arbitrary offsets, not just ImageBase
4. ReadString reads in 64-byte chunks with encoding-aware null-terminator
pattern matching (handles UTF-16's 2-byte null, UTF-32's 4-byte null)
Cleanup:
5. InProcessReader validates handle on open and uses RPM through it
(handle is no longer unused)
6. Array marshal read: pin raw buffer once, PtrToStructure at offset
7. StructureToByteArray(Span) delegates to byte[] overload, no duplicate
New tests: 4 invalid-address grace tests (returns default/empty/false).
All 57 passing.
Add GetAbsolute/GetRelative with nint-based arithmetic (bitness-agnostic).
Add 6 tests: absolute resolution, relative computation, base-round-trip,
isRelative flag on Read/Write/ReadBytes.
Fix MemoryBase.cs: restore for-loop body damaged by prior edit, clean up
StructureToByteArray overloads.
All passing (total: 44).
Add abstract MemoryBase base class with typed Read<T>/Write<T>, array
IO, string IO, and relative/absolute addressing. Uses MarshalCache<T>
to branch between blittable (MemoryMarshal) and marshal-required paths.
Add ExternalReader (out-of-process via ReadProcessMemory/WriteProcessMemory)
with SafeMemoryHandle lifecycle management.
11 new tests: ImageBase, Read/Write of int/byte/long/struct, byte array,
int array, struct array, invalid address, dispose, double-dispose.
All passing (total: 30).
Add MarshalCache<T> static class that computes Size, SizeU,
TypeRequiresMarshal, IsIntPtr, TypeCode, and RealType once per type
in the static constructor. Handles bool (size=1), enums (underlying
type), and MarshalAs-attributed fields (TypeRequiresMarshal).
12 new tests covering: blittable sizes, bool size, enum size, struct
size, marshal-required flag, IsIntPtr, computed-once caching.
All passing.
Create the WhiteMagic net8.0-windows class library and the WhiteMagicTest
xUnit project, grouped in WhiteMagic.slnx (SDK 10 default format). Library
enables nullable, unsafe blocks, x86/x64 platforms, warnings-as-errors.
Empty solution builds clean (0 errors, 0 warnings).
Add AGENTS.md (ASD-STE100) defining the build/test commands, the test-first
rule, and the one-feature-one-branch workflow with review before merge to
master.
Mark project-setup tasks 1.1-1.3, 1.5 done; 1.4 (Native P/Invoke surface)
is the first feature branch.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
kbe
