#898: With TH, when doing "cabal haddock", GHCi "couldn't find symbol"
------------------------------+---------------------------------------------
Reporter: MikolajKonarski | Owner:
Type: defect | Status: new
Priority: normal | Milestone:
Component: Cabal library | Version: HEAD
Severity: normal | Keywords:
Difficulty: unknown | Ghcversion:
Platform: Linux |
------------------------------+---------------------------------------------
GHC 7.2.1, Cabal HEAD, Haddock 2.9.2. The message
{{{
During interactive linking, GHCi couldn't find the following symbol:
Allurezm0zi4zi2_UtilsziMultiline_multiline_closure
}}}
How to reproduce: get package
http://hackage.haskell.org/package/Allure-0.4.2, cabal install, cabal
haddock --executables and you should get the following:
{{{
Running Haddock for Allure-0.4.2...
Warning: The documentation for the following packages are not installed.
No
links will be generated to these packages: ConfigFile-1.1.1,
HUnit-1.2.4.2,
MissingH-1.1.1.0, ffi-1.0, rts-1.0, cairo-0.12.1, deepseq-1.1.0.2,
gio-0.12.1,
glib-0.12.1, gtk-0.12.1, hslogger-1.1.5, mtl-2.0.1.0, network-2.3.0.6,
pango-0.12.1, parsec-3.1.2, random-1.0.1.0, regex-base-0.93.2,
regex-compat-0.95.1, regex-posix-0.95.1, text-0.11.1.6,
transformers-0.2.2.0,
zlib-0.5.3.1
Preprocessing executable 'BotAllure' for Allure-0.4.2...
haddock coverage for dist/build/tmp-28531/src/Bot.hs: 0/3 0%
Warning: Main: could not find link destinations for:
System.Random.StdGen
Documentation created: dist/doc/html/Allure/BotAllure/index.html
Preprocessing executable 'Allure' for Allure-0.4.2...
haddock coverage for dist/build/autogen/Paths_Allure.hs: 0/4 0%
haddock coverage for dist/build/tmp-28531/src/Utils/File.hs: 0/3 0%
haddock coverage for dist/build/tmp-28531/src/Frequency.hs: 0/6 0%
haddock coverage for dist/build/tmp-28531/src/Strategy.hs: 1/7 14%
haddock coverage for dist/build/tmp-28531/src/Content/Content.hs: 0/2
0%
haddock coverage for dist/build/tmp-28531/src/Utils/Multiline.hs: 1/2
50%
During interactive linking, GHCi couldn't find the following symbol:
Allurezm0zi4zi2_UtilsziMultiline_multiline_closure
This may be due to you not asking GHCi to load extra object files,
archives or DLLs needed by your current session. Restart GHCi, specifying
the missing library using the -L/path/to/object/dir and -lmissinglibname
flags, or simply by naming the relevant files on the GHCi command line.
Alternatively, this link failure might indicate a bug in GHCi.
If you suspect the latter, please send a bug report to:
glasgow-haskell-b...@haskell.org
}}}
The same problem for a library, with or without executables, with the same
code. Hiding, in the library, the offending module Multiline does not
help. The only thing that helps is eta-expanding the Multiline code as
follows:
{{{
-multiline = TQ.QuasiQuoter (TH.litE . TH.stringL) undefined undefined
undefined
+multiline = TQ.QuasiQuoter (\x -> (TH.litE . TH.stringL) x) undefined
undefined undefined
}}}
and _not_ using the function in the only place where it's used.
--
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/898>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects
_______________________________________________
cabal-devel mailing list
cabal-devel@haskell.org
http://www.haskell.org/mailman/listinfo/cabal-devel
