I just noticed that on HEAD, happy reports for Parser.y.pp: $ happy -agc --strict compiler/stage1/build/Parser.y unused rules: 2 shift/reduce conflicts: 49 reduce/reduce conflicts: 1 But the code claims: 12 October 2012 Conflicts: 43 shift/reduce 1 reduce/reduce So somewhere recently we have picked up 6 additional shift/reduce conflicts. Twan