GetThreadContext fails after a successful SuspendThread in Windows 7

Question

I\'m encountering an odd issue on a sampling profiler in Windows 7 (no such issues AFAICT on previous Windows OSes, be they 32 or 64 bit).

The profiler works by peri

Answer 1

Looking at the GetThreadContext function, it mentions that

The CONTEXT structure is highly processor specific. Refer to the WinNt.h header file for processor-specific definitions of this structures and any alignment requirements.

And looking at this file, _CONTEXT is declared with

typedef struct DECLSPEC_ALIGN(16) _CONTEXT {
...

So it's possible it could be an alignment issue.