[Valgrind-developers] bug in helper_{IN,OUT}

[Nicholas N. <nj...@ca...>]

Hi,

I think there is a bug in helper_IN and helper_OUT.  Both of them trash
%eflags, because they contain 'cmp' instructions.  But they don't preserve
the flags with pushf/popf, the way that helper_fstsw_AX does, for example.
I figure nobody's noticed this before because IN and OUT are so rare.

Can somebody else confirm my thinking?  I'll commit a fix if so.

N