[GHC] #10298: Infinite loop when shared libraries are unavailable

#10298: Infinite loop when shared libraries are unavailable -------------------------------------+------------------------------------- Reporter: snoyberg | Owner: simonmar Type: bug | Status: new Priority: normal | Milestone: Component: Runtime | Version: 7.10.1 System | Operating System: Linux Keywords: | Type of failure: Runtime crash Architecture: x86_64 | Blocked By: (amd64) | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Originally discussed at: https://groups.google.com/d/msg/haskell- cafe/5ZTv5mCG_HI/hBJ-VkdpxdoJ. Note that this was originally discussed as a static linking and Docker issue, but in fact affects dynamically linked executables without any containerization. I've put together the following script that reproduces my problem: {{{ cat > hello.hs <https://gist.github.com/snoyberg/095efb17e36acc1d6360 Note that this problem also occurs with statically linked executables when some of the other dynamically linked libraries are not available in the chroot environment. Expected behavior: ideal would be not to require the gconv files and other shared libraries be present, especially when statically linked. Barring that, it would be much better if the RTS could produce a meaningful error message about the missing file. Note that strace does demonstrate that a open system call is failing, e.g.: open("/usr/lib/x86_64-linux-gnu/gconv/gconv-modules.cache", O_RDONLY) = -1 ENOENT (No such file or directory) Reproduced on GHC 7.8.4 and 7.10.1, on Ubuntu 14.04 64-bit. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10298 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler