Segfault while upgrading using 0.9.20

[schancel]

dub upgrade
Upgrading project in /Users/xxx/xxxx
The following changes will be performed:
Fetch vibe-d ~master, userWide
Fetch msgpack-d ~master, userWide
Fetch libevent ~master, userWide
Fetch mysql-native ~master, userWide
Fetch openssl ~master, userWide
Fetch libev ~master, userWide
Fetching vibe-d ~master...
Placing vibe-d ~master to /Users/xxx/.dub/packages/...
Segmentation fault: 11

Downgrading to 19 fixed it?

[s-ludwig]

Can you post the package description file? I can't reproduce the crash on my projects.

[schancel]

Mine, or vibe-d's? Mine is here: https://github.com/schancel/gameserver/blob/master/package.json

[s-ludwig]

Yours

[s-ludwig]

Alternatively, getting the stack trace using GDB, may be enough to find the cause.

[schancel]

Never used GDB before. Is this what you need?

#0  0x00007fff8f57a020 in _platform_memmove$VARIANT$Nehalem ()
#1  0x00000001000fa8b4 in _d_arraycatnT ()
#2  0x0000000100050fb6 in D3dub8internal10vibecompat4data4json4Json8opAssignMFHAyaS3dub8internal10vibecompat4data4json4JsonZHAyaS3dub8internal10vibecompat4data4json4Json17__foreachbody6456MFKAyaKS3dub8internal10vibecompat4data4json4JsonZi ()
#3  0x00000001000f4086 in _aaApply2 ()
#4  0x0000000100050f43 in D3dub8internal10vibecompat4data4json4Json8opAssignMFHAyaS3dub8internal10vibecompat4data4json4JsonZHAyaS3dub8internal10vibecompat4data4json4Json ()
#5  0x0000000100017dff in D3dub14packagemanager7Journal9serializeMxFZS3dub8internal10vibecompat4data4json4Json ()
#6  0x0000000100017ba0 in D3dub14packagemanager7Journal4saveMFS3dub8internal10vibecompat4inet4path4PathZv ()
#7  0x0000000100013af0 in D3dub14packagemanager14PackageManager3getMFS3dub8internal10vibecompat4inet4path4PathS3dub8internal10vibecompat4data4json4JsonS3dub8internal10vibecompat4inet4path4PathZC3dub8package_7Package ()
#8  0x000000010000f388 in D3dub3dub3Dub5fetchMFAyaxS3dub10dependency10DependencyE3dub7project17PlacementLocationbbZC3dub8package_7Package ()
#9  0x000000010000e7f0 in D3dub3dub3Dub6updateMFE3dub7project13UpdateOptionsZv ()
#10 0x000000010000303d in D3dub11commandline17runDubCommandLineFAAyaZi ()
#11 0x00000001000016b0 in _Dmain ()
#12 0x00000001000f604d in D2rt6dmain211_d_run_mainUiPPaPUAAaZiZi7runMainMFZv ()
#13 0x00000001000f5b99 in D2rt6dmain211_d_run_mainUiPPaPUAAaZiZi7tryExecMFMDFZvZv ()
#14 0x00000001000f6099 in D2rt6dmain211_d_run_mainUiPPaPUAAaZiZi6runAllMFZv ()
#15 0x00000001000f5b99 in D2rt6dmain211_d_run_mainUiPPaPUAAaZiZi7tryExecMFMDFZvZv ()
#16 0x00000001000f5b4d in _d_run_main ()
#17 0x00000001000f597c in main ()

[s-ludwig]

Okay, I finally managed to reproduce it. It's caused by one of the many associative array bugs in DMD. But it's possible to work around it.