ROOT CAUSE:
Array placement new (::new(buffer) T[N]) adds a hidden cookie (array size)
before the array elements in some compiler implementations (particularly MSVC).
The cookie is used for proper array destruction. However, the data_set buffer
was sized only for sizeof(T[N]), not accounting for the cookie overhead.
ISSUE:
- Buffer allocated: sizeof(rand_buf[LoopCount])
- Actual space needed: sizeof(cookie) + sizeof(rand_buf[LoopCount])
- Result: Cookie and part of array written beyond buffer boundary
- Consequence: Memory corruption, leading to invalid pointers in buffer objects
SYMPTOM:
In IPC.1v1 test, memcpy(buf, data, size) crashed because 'data' pointer
(from buffer::data()) pointed to corrupted/invalid memory address.
SOLUTION:
Replace array placement new with individual element placement new:
- Cast buffer to array pointer directly (no cookie needed)
- Construct each element individually with placement new
- Manually destroy each element in destructor
This approach:
- Eliminates cookie overhead
- Provides precise control over object lifetime
- Works consistently across all compilers
Fixes crash in IPC.1v1 test case on MSVC.
- Move all existing test files (*.cpp, *.h) to test/archive/
- Rename CMakeLists.txt to CMakeLists.txt.old in archive
- Prepare for comprehensive unit test refactoring
