Condition for while and switch statements

[Denis Perchine]

Hello,

I have quite interesting problem.
In c-tree.texi it is described that switch and while statement have either 
expression or var declaration as condition. But I always get TREE_LIST.

How this can be? Looks like documentation is wrong. Also I can not understand 
what is inside TREE_LIST and why it is used here.

Any comments are appreciated.

-- 
Sincerely Yours,
Denis Perchine

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