Software watchdog bites due to PR#1097 - m_printf: stacksize reduced

[frankdownunder]

If I use the old version of Sming/system/m_printf.cpp my code works fine. With the new version introduced on Sep 30, the dog bites me.
Two conclusions are possible:

1. My code is making unreasonable demands
2. The new version of m_printf.cpp is slower then the old version, possibly even a forever loop.

I suspect the second reason, and will do some timing tests and so on to investigate further.

[slaff]

There is definitely something fishy with the latest changes to m_printf.cpp ed94fb7. Reverting those changes made the Basic_Serial example work again with SDK 2.1+.

@frankdownunder Did you have time to analyze the changes?

[frankdownunder]

@slaff Hi, I found nothing conclusive. I was hoping for a minimal "this demonstrates the bug" but couldn't. The new function didn't seem to be significantly slower either. I am fighting other fires now, sorry..

[slaff]

@frankdownunder Feel free to reopen the ticket when you have more information about it.