search for: fix_vararg

I'm trying to use steens-aa from poolalloc on llvm-2.6. However, when I run the alias analysis, steens aa falls back on default aa because the DSNodes are incomplete. My program is very simple. The default aa identifies that &a and &c.b cannot alias but d can alias with both of them. I use the AliasAnalysis.alias method to find out pairwise from within my own analysis which of the