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After executing:

simpleHTTP (getRequest "http://maps.google.com/maps/api/geocode/json?address=London&sensor=false")

GHC hangs and consumes all the CPU resources (CPU load rises to 100%).

Sample log:

C:\>ghci -v -dcore-lint
GHCi, version 6.12.3: http://www.haskell.org/ghc/  :? for help
Glasgow Haskell Compiler, Version 6.12.3, for Haskell 98, stage 2 booted by GHC version 6.10.4
Using binary package database: C:\PROGRA~1\HASKEL~1\201020~1.0\lib\package.conf.d\package.cache
Using binary package database: C:\Documents and Settings\User\Application Data\ghc\i386-mingw32-6.12.3\package.conf.d\package.cache
hiding package regex-posix-0.94.2 to avoid conflict with later version regex-posix-0.94.4
hiding package base-3.0.3.2 to avoid conflict with later version base-4.2.0.2
wired-in package ghc-prim mapped to ghc-prim-0.2.0.0-2feb0cb38f65a4827135ada88c34f3ef
wired-in package integer-gmp mapped to integer-gmp-0.2.0.1-72436e28c79d056c87cc0d2d2f9f3773
wired-in package base mapped to base-4.2.0.2-0d1804f62045e52b2e806996d84f5318
wired-in package rts mapped to builtin_rts
wired-in package haskell98 mapped to haskell98-1.0.1.1-b5196101fd7a8c42a8d53bd8033d6765
wired-in package template-haskell mapped to template-haskell-2.4.0.1-401621dedd4a5f07bfd8630247358bf5
wired-in package dph-seq mapped to dph-seq-0.4.0-be069f0bb710922a6ddd4ed2b91e3a6c
wired-in package dph-par mapped to dph-par-0.4.0-b31a0ce10b7c92126978fcc929077ad6
Hsc static flags: -static
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Loading package ffi-1.0 ... linking ... done.
Prelude> :module +Network.HTTP
Prelude Network.HTTP> simpleHTTP (getRequest "http://maps.google.com/maps/api/geocode/json?address=London&sensor=false")
*** Parser:
*** Desugar:
*** Simplify:
*** CorePrep:
*** ByteCodeGen:
Loading package syb-0.1.0.2 ... linking ... done.
Loading package base-3.0.3.2 ... linking ... done.
Loading package parsec-2.1.0.1 ... linking ... done.
Loading package network-2.2.1.7 ... linking ... done.
Loading package mtl-1.1.0.2 ... linking ... done.
Loading package bytestring-0.9.1.7 ... linking ... done.
Loading package Win32-2.2.0.2 ... linking ... done.
Loading package array-0.3.0.1 ... linking ... done.
Loading package old-locale-1.0.0.2 ... linking ... done.
Loading package old-time-1.0.0.5 ... linking ... done.
Loading package HTTP-4000.0.9 ... linking ... done.
*GHC hangs here*

I'm using Windows XP SP3, Haskell Platform 2010.2.0.0. No firewall or proxy restrictions.

The bug was also reported here: http://groups.google.com/group/haskell-cafe/browse_thread/thread/4e4a7e5eb92d1b81/48300428c7c10a57?lnk=gst&q=HTTP+package#48300428c7c10a57

There's a file in attachment with Wireshark's capture during the sample execution.

Note the same sample on ghc 6.12.1, haskell-network 2.2.1.7-3 on ArchLinux works just fine.

Trac metadata

Trac field	Value
Version	6.12.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	libraries (other)
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system	Windows
Architecture	x86