Hugs folk, I thought I'd run the latest Hugs against some of the GHC tests, in particular to test the module system since it's received some attention recently. I've found a few bugs... all these test cases can be found under fptools/testsuite/rename. 1. Hiding constructors doesn't work properly. See rename/prog002, which should fail to compile. 2. Pattern bindings which bind no variables are erroneously disallowed (rename/should_compile/rn003). 3. some problem with qualified imports (rename/should_compile/rn026 and rename/should_compile/rn027). 4. defining a variable which clashes with an import is ok as long as the variable is never referred to. Hugs disallows it. (rename/should_compile/rn029). 5. some problem with empty declaration lists (rename/should_compile/rn034). 6. infix declarations are legal inside a class declaration (rename/should_compile/rn035). 7. precedence parsing with unary negation is wrong. (rename/should_fail/rnfail017.hs). 8. it appears that extra qualified names are being brough into scope (rename/should_fail/rnfail030.hs and rnfail031.hs). 9. hiding doesn't work with qualified imports (rename/should_fail/rnfail032.hs and rnfail033.hs). 10. naming a constructor in an export list is illegal. (rename/should_fail/rnfail035.hs). We really ought to think about merging our test suites at some point; the stuff in fptools/testsuite is supposed to be largely compiler-independednt, but it will need some work to make it go through with Hugs. Cheers, Simon