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Regression in Smatch

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Dan,

As my version of Smatch did not show some of the warnings that you reported to me earlier, I did a git pull and ran into a regression that causes Smatch to run very slowly, and may have an infinite loop. I bisected the problem and got the following:

Commit		Execution time
2c45218		35 sec
3ef1e73 	4 min 43 sec
d94be05		Not finished after 1 hour

Those are sequential commits. All of these were run on an otherwise unloaded system on the current code in drivers/staging/rtl8188eu/. The command used was

time make CHECK=~/smatch/smatch C=2 drivers/staging/rtl8188eu/

As you see, make used only a single CPU. None of the files needed to be compiled.

I will be happy to test any fixes. For the moment, I am sticking with commit 2c45218.

Larry
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