olaf 2005/11/03 11:23:51 PST Modified files: src/hattrans TraceTrans.hs Log: Fixed a bug in hat-trans The problem was two deriving clauses of the same class at exactly the same positions in two modules, one importing the other: module DeriveA where data A = A deriving Show module Main import DeriveA data B = B deriving Show This yielded in compilation: Ambiguous occurrence `a5v21v5v24showsPrec' It could refer to either `Main.a5v21v5v24showsPrec', defined at Hat/Derive.hs:61:0 or `Hat.DeriveA.a5v21v5v24showsPrec', imported from Hat.DeriveA at Hat/Derive.hs:9:0-17 A variable "a5v21v5v24showsPrec" for the identifier of a method should not be exported from a module, but it was. Now it no longer is. This requires collecting variables for identifiers of methods separately from collecting variables for other identifiers. (A method is kind of local, hence the variable should not be exported; however, it is also marked as a global function in the trace) Revision Changes Path 1.76 +25 -18 hat/src/hattrans/TraceTrans.hs