CPP "DEBUG" and validate

[Simon Peyton-Jones]

Good idea!  I've been caught by this too

Simon

| -----Original Message-----
| From: cvs-ghc-bounces at haskell.org [mailto:cvs-ghc-bounces at haskell.org] On Behalf Of Isaac Dupree
| Sent: 02 June 2008 02:09
| To: BuildBot Collator
| Subject: CPP "DEBUG" and validate
|
| This seems to be the most common way that validate is accidentally
| broken, these days -- not testing with both DEBUG defined and undefined.
|   Rather than double the testing time, I suggest validate is modified to
| either:
|
| - Compile one of stage1 and stage2 with DEBUG and the other without.
| - But if you want to compile them both with DEBUG (or both without),
| then, finish up by compiling a stage3 (or whichever "stage") with the
| opposite sense of DEBUG, and without any optimizations because you're
| not going to be using it.
|
| These won't catch behavior differences that only testing can catch --
| but I think most of these errors are just incorrect imports etc., so I'm
| suggesting something that seems expedient to me.  There are still
| buildbots to help catch the rest after-the-fact.
|
| what do you think?
|
| -Isaac
|
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