mudflap: compiler flags changed?

[Eyal Lebedinsky]

I was avoiding using mudflap for a while due to the high volume
of violations that I could not explain. Recently, they all
disappeared which made me happy and I started using mf. I got
zero violations since.

When I had time to think about it I figured this just cannot
be true.

I have now confirmed that using -fmudflapth causes most of the
checks to not happen. -fmudflap seems to have all checks done.

In the past -fmudflapth did the job. Something changed.

The help suggests that the two options have a function but it
is not clear (to me) what it is. Attached is a sample that
demonstrates how a simple violation is missed when -fmudflapth
is used (the program does not use threads).

-- 
Eyal Lebedinsky (eyal@eyal.emu.id.au) <http://samba.org/eyal/>
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