Arch Linux

Description:

After upgrading ghc, ghc-libs, xmonad and xmobar to latest versions, xmobar crashes and leaves a coredump.

Additional info:

ghc 8.4.2-1
ghc-libs 8.4.2-1
xmobar 0.26-24
xmonad 0.13.20180419-1
xmonad-contrib 0.13.20180518-1

My xmonad config is:

```
import System.IO
import System.Posix.Env (putEnv)
import XMonad
import XMonad.Hooks.DynamicLog
import XMonad.Hooks.ManageDocks
import XMonad.Layout.BinarySpacePartition
import XMonad.Util.EZConfig(additionalKeys)
import XMonad.Util.Run(spawnPipe)
import XMonad.Util.SpawnOnce(spawnOnce)

main = do
putEnv "_JAVA_AWT_WM_NONREPARENTING=1"
xmproc <- spawnPipe "xmobar ~/.xmonad/xmobar.hs"
xmonad $ docks $ def
{ terminal = "kitty"
, startupHook = do
spawnOnce "feh --bg-scale -z \"/home/luis/Pictures/Wallpapers/Cthulhu - 02.png\""
spawnOnce "stalonetray -c ~/.config/stalonetrayrc"
spawnOnce "nm-applet"
spawnOnce "redshift-gtk"
spawnOnce "setxkbmap -option compose:rctrl"
, normalBorderColor = myNormalBorderColor
, focusedBorderColor = myFocusedBorderColor
, manageHook = manageDocks <+> manageHook def
, layoutHook = myLayout --avoidStruts $ layoutHook def
, logHook = dynamicLogWithPP $ xmobarPP
{ ppOutput = hPutStrLn xmproc
, ppTitle = xmobarColor "#657b83" "" . shorten 100
, ppCurrent = xmobarColor "#c0c0c0" "" . wrap "" ""
, ppSep = xmobarColor "#c0c0c0" "" " | "
, ppUrgent = xmobarColor "#ff69b4" ""
}
, modMask = mod4Mask
} `additionalKeys`
[ ((mod4Mask, xK_b) , sendMessage ToggleStruts)
, ((mod4Mask, xK_d) , spawn "rofi -bw 1 -show drun")
, ((mod4Mask, xK_m) , spawn "xrandr --output DP1 --auto --primary --left-of eDP1")
, ((mod4Mask .|. shiftMask, xK_m), spawn "xrandr --output DP1 --off")
, ((mod4Mask .|. shiftMask, xK_l), spawn "dm-tool lock")
]

myLayout = avoidStruts $ emptyBSP ||| Full

myNormalBorderColor = "#657b83"

myFocusedBorderColor = "#b58900"

```

My xmobar config is:

```
Config { font = "xft:Meslo LG M DZ for Powerline:size=10,FontAwesome:size=10"
, bgColor = "#002b36"
, fgColor = "#657b83"
, position = Static { xpos = 0 , ypos = 0, width = 3520, height = 32 }
, sepChar = "%"
, alignSep = "}{"
, template = "%StdinReader% }{ <fc=#c0c0c0>|</fc> %coretemp% <fc=#c0c0c0>|</fc> %memory% <fc=#c0c0c0>|</fc> %bright% <fc=#c0c0c0>|</fc> %volume% <fc=#c0c0c0>|</fc> %battery% <fc=#c0c0c0>|</fc> %date% <fc=#c0c0c0>|</fc>"
, commands = [ Run StdinReader

, Run CoreTemp [ "--template" , "Temp: <core0>°C <core1>°C <core2>°C <core3>°C"
, "--Low" , "40" -- units: °C
, "--High" , "80" -- units: °C
, "--low" , "#859900"
, "--normal" , "#b58900"
, "--high" , "#dc322f"
] 50

, Run Memory [ "--template" ,"Mem: <usedratio>%"
, "--Low" , "20" -- units: %
, "--High" , "90" -- units: %
, "--low" , "#859900"
, "--normal" , "#b58900"
, "--high" , "#dc322f"
] 10

, Run Date "%F %H:%M" "date" 10

, Run Battery [ "--template" , "Batt: <acstatus>"
, "--Low" , "10" -- units: %
, "--High" , "80" -- units: %
, "--low" , "#dc322f"
, "--normal" , "#b58900"
, "--high" , "#859900"
, "--" -- battery specific options
-- discharging status
, "-o" , "<left>% (<timeleft>)"
-- AC "on" status
, "-O" , "<fc=#b58900>Charging (<timeleft>)</fc>"
-- charged status
, "-i" , "<fc=#859900>Charged</fc>"

] 30
, Run Com "/bin/sh" [ "-c", "~/.xmonad/volume.sh"
] "volume" 10

, Run Brightness [ "--template" , " <percent>%"
, "--"
, "--device" , "intel_backlight"
] 50
]
}
```

The coredump exceeds the attachment size limit so I got this:


```
coredumpctl info 16929

PID: 16929 (xmobar)
UID: 1000 (luis)
GID: 100 (users)
Signal: 11 (SEGV)
Timestamp: Wed 2018-05-30 15:27:36 BST (9min ago)
Command Line: xmobar /home/luis/.xmonad/xmobar.hs
Executable: /usr/bin/xmobar
Control Group: /user.slice/user-1000.slice/session-c2.scope
Unit: session-c2.scope
Slice: user-1000.slice
Session: c2
Owner UID: 1000 (luis)
Boot ID: 9cc0b30f2b6d4986b3592884836ac3fb
Machine ID: 7de0af45534246b38abb3b614fea0071
Hostname: BigCentech-Precision5520
Storage: /var/lib/systemd/coredump/core.xmobar.1000.9cc0b30f2b6d4986b3592884836ac3fb.16929.1527690456000000.lz4
Message: Process 16929 (xmobar) of user 1000 dumped core.

Stack trace of thread 16929:
#0 0x00007f10b3a53acb ghczmprim_GHCziClasses_zdfEqModulezuzdszdczeze_info (libHSghc-prim-0.5.2.0-ghc8.4.2.so)
```