Windows exception handler change causes segfault with API Monitor

API Monitor is a debugging tool that intercepts and logs calls to DLLs. It was extremely helpful with debugging #12010 (closed) and is broken in recent GHCs. Attaching it to a GHC compiled executable causes the message Segmentation fault/access violation in generated code to be printed. Launching one from inside API Monitor doesn't work either, though I can't read the console output before the window closes. Bisect shows the offending commit is 5200bdeb - "Replaced SEH handles with VEH handlers which should work uniformly across x86 and x64".

I know this is somewhat outside of "standard usage", but there are very few useful debugging tools for stuff like this and I'd really like to not lose this one.

Trac metadata

Trac field	Value
Version	8.0.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Runtime System
Test case
Differential revisions
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Blocking
CC	simonmar
Operating system
Architecture