Unregisterized builds failing due to multiple uniques assigned to same FastString
When compiling with --enable-unregisterised, we get this failure:
"inplace/bin/ghc-stage1" -hisuf hi -osuf o -hcsuf hc -static -H32m -O -this-package-key conta_4P4
dHnD3A89EkvERxmaFmd -hide-all-packages -i -ilibraries/containers/. -ilibraries/containers/dist-install
/build -ilibraries/containers/dist-install/build/autogen -Ilibraries/containers/dist-install/build -Il
ibraries/containers/dist-install/build/autogen -Ilibraries/containers/include -optP-include -optPli
braries/containers/dist-install/build/autogen/cabal_macros.h -package-key array_H3W2D8UaI9TKGEhUuQHax2
-package-key base_DiPQ1siqG3SBjHauL3L03p -package-key deeps_L0rJEVU1Zgn8x0Qs5aTOsU -package-key ghcpr
_BE58KUgBe9ELCsPXiJ1Q2r -O2 -Wall -XHaskell98 -XRoleAnnotations -O2 -no-user-package-db -rtsopts
-odir libraries/containers/dist-install/build -hidir libraries/containers/dist-install/build -stubdir
libraries/containers/dist-install/build -dynamic-too -c libraries/containers/./Data/StrictPair.hs -o
libraries/containers/dist-install/build/Data/StrictPair.o -dyno libraries/containers/dist-install/bui
ld/Data/StrictPair.dyn_o
<command line>: unknown package: deepseq-1.3.0.2The reason why GHC is unable to find the package is because, as it turns out, the Unique that was used to store the key in a map is different from the Unique associated with the FastString that we're doing the lookup with.
The bug only shows up with ghc-stage1 is compiled with optimizations.
Bisecting revealed that this commit was to blame:
commit 66218d15b7c27a4a38992003bd761f60bae84b1f
Author: Edward Z. Yang <ezyang@cs.stanford.edu>
Date: Fri Jul 18 14:48:47 2014 +0100
Package keys (for linking/type equality) separated from package IDs.However, looking at the commit, there is nothing that would obviously cause this problem, so maybe it is tickling a preexisting bug.
Bisection script:
{{{ #!/bin/sh make clean git submodule update perl boot
- /configure --enable-unregisterised
make -j11 libraries/containers/dist-install/build/Data/StrictPair.o }}}
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.9 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | high |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |