Let me correct this slightly - thought I had a good handle on the changes reqd to fix the issue with precedences and unary negation, but alas no. So, no change in the status of item 7. --sigbjorn ----- Original Message ----- From: "Sigbjorn Finne" To: "Simon Marlow" Cc: Sent: Thursday, September 12, 2002 14:59 Subject: Re: Bugs

Thanks, these now behave as expected with Hugs, bar the 2nd one, which is a known Hugs issue. I'm not planning on tackling it right now; others feel free..

--sigbjorn

----- Original Message ----- From: "Simon Marlow" To: Sent: Wednesday, September 11, 2002 03:07 Subject: Bugs

...

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

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