#4828: ghci fails to load fat binary archives on OS X
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Reporter: gwright | Owner: igloo
Type: bug | Status: patch
Priority: normal | Milestone: 7.2.1
Component: Runtime System | Version: 7.0.1
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: MacOS X | Blocking:
Architecture: Unknown/Multiple | Failure: GHCi crash
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Comment(by gwright):
I've tested a version of your patch and it loads fat archives correctly.
(The only difference between your patch and the one I've attached are a
few typographical corrections.)
Building with `GhcDebugged=YES`, we can see the result:
{{{
plumbbob-franklin> inplace/bin/ghc-stage2 --interactive +RTS -Dl -RTS 2>&1
| grep loadArchive
initLinker: inserting rts symbol _loadArchive, 0x101f01bb8
loadArchive: Loading archive `/opt/local/lib/libiconv.a'
loadArchive: found a fat archive containing 2 architectures
loadArchive: found my archive in a fat archive
loadArchive: Found member file `__.SYMDEF SORTED'
loadArchive: Found member file `iconv.o'
loadArchive: Found member file `localcharset.o'
loadArchive: Found member file `relocatable.o'
loadArchive: Loading archive `/opt/local/lib/libcharset.a'
loadArchive: found a fat archive containing 2 architectures
loadArchive: found my archive in a fat archive
loadArchive: Found member file `__.SYMDEF SORTED'
loadArchive: Found member file `localcharset.o'
loadArchive: Found member file `relocatable.o'
Prelude>
}}}
I checked the loadArchive routine and it does get the length of an archive
from the archive header, so we should never run past the end.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4828#comment:8>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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