#5188: Runtime error when allocating lots of memory ---------------------------------+--------------------------- Reporter: knyblad | Owner: Type: bug | Status: new Priority: low | Milestone: 7.6.2 Component: GHCi | Version: 6.12.1 Resolution: | Keywords: Operating System: Linux | Architecture: x86 Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: ---------------------------------+--------------------------- Changes (by rwbarton): * difficulty: => Unknown Comment: I was able to reproduce this (Linux 2.6.32-5-686, GHC 7.4.2). Here is the offending mmap call, from strace: `mmap2(0x8d900000, 0, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 EINVAL (Invalid argument)` ... which is certainly invalid (from the mmap man page: "EINVAL (since Linux 2.6.12) length was 0.") I'll try to figure out why it is mmapping 0 bytes. Could be an integer overflow, when `size` is computed in `osGetMBlocks`... -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/5188#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler