Estimated hours taken: 1.5
Fix a couple of bugs related to pruning of impure goals with no output
variables.
compiler/det_analysis.m:
Fix a bug: the compiler was automatically inserting pruning
across impure goals with no output variables. That should
happen only for pure or semipure goals. To prevent pruning
in those cases, I changed it so that impure goals with no
output variables are not considered single-solution contexts.
doc/reference_manual.texi:
Document the above-mentioned change.
compiler/clause_to_proc.m:
Fix a bug: when converting a bunch of clauses into a disjunction,
clause_to_proc.m was not computing the proper purity annotation
on the goal_info for the disjunction.
tests/hard_coded/Mmakefile:
tests/hard_coded/impure_prune.m:
tests/hard_coded/impure_prune.exp:
A test case for the above-mentioned changes to det_analysis.m
and clause_to_proc.m.
