#4900: DEPENDS pragma
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Reporter: cdsmith | Owner: simonmar
Type: feature request | Status: patch
Priority: normal | Milestone: 7.6.1
Component: Compiler | Version:
Resolution: | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: None/Unknown | Difficulty: Unknown
Testcase: TH_Depends | Blockedby:
Blocking: | Related:
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Comment(by simonmar):
While looking at the patch I noticed something odd: in order to look up
the modification times of the "usage files" while constructing the
`ModSummary`, we have to look for the `ModIface` in the HPT. The first
time around, it won't be there, so we'll have `Nothing` for the
`ms_uf_date`, but the second time it will, which will force us to re-
summarise all the modules. This is very fishy. I'm worried about (a)
correctness when the module is not in the HPT, and (b) performance.
I'm leaving the patch for now until I figure out the right thing to do.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4900#comment:47>
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