runtime: manage stack by ourselves for badcallback on windows/amd64 This function uses 48-byte of precious non-split stack for every callback function, and without this CL, it can easily overflow the non-split stack. I encountered this when trying to enable misc/cgo/test on windows/amd64.
runtime: manage stack by ourselves for badcallback on windows/amd64
This function uses 48-byte of precious non-split stack for every callback
function, and without this CL, it can easily overflow the non-split stack.
I encountered this when trying to enable misc/cgo/test on windows/amd64.

R=rsc
CC=golang-dev
http://codereview.appspot.com/5784075

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