SIGSEGV / panic in fingerprint from apostrophe in env var shell command filename #2753

Activity

1. task-bot

   added

   state: needs triageWaiting to be triaged by a maintainer.Waiting to be triaged by a maintainer.

   on Mar 20, 2026
2. loganfred

   changed the title [-]SIGSEGV in fingerprint if duplicate filenames in different directories[/-] [+]SIGSEGV in fingerprint possibly due to duplicate filenames throughout different dirs and namespaces[/+] on Mar 20, 2026
3. timrulebosch commented on Mar 20, 2026

   

   timrulebosch

   on Mar 20, 2026

   More actions

   Is failing while expanding sources. You could try this to understand the glob pattern that causes the crash:

   compile:
       internal: true
       label: compile-essay-{{.FILE}}
       requires:
         vars: [FILE, OUT_DIR, OUT]
       cmds:
         - echo {{.FILE}}
   

   That should not crash, and may give a clue as to what is happening.
4. trulede

   added

   state: awaiting responseWaiting for issue author to respond.Waiting for issue author to respond.

   on Mar 21, 2026
5. loganfred commented on Mar 21, 2026

   

   loganfred

   on Mar 21, 2026

   Author

   More actions

   I updated the public:essays:compile and public:notes:compile like so:

   compile:
       internal: true
       label: 'compile-note-{{.FILE}}'
       requires:
         vars: [FILE, OUT_DIR, OUT]
       #sources:
       #  - '{{.FILE}}'
       #generates:
       #  - '{{.OUT}}'
       #cmds:
       #  - pandoc {{.PANDOC_FLAGS}} {{.FILE}} -o {{.OUT}}
     cmds:
       - echo {{.FILE}}
   

   Looks like the build-all -> deps -> FILES var is only run once, for the public:essays:compile, and not for public:notes:compile
   Could that be it? I don't feel like I have the right mental model of scoping.

   Here is the output

   [USER@ARCH test_repo]$ go-task -a
   task: Available tasks for this project:
   * all:
   * clean:
   * private:all:
   * private:resume:default:        Compile My Resume      (aliases: private:resume)
   * public:all:
   * public:essays:build-all:       Compile all .md files in parallel with fingerprinting      (aliases: public:essays:essays)
   * public:essays:clean:           Remove output directory
   * public:essays:cmds:
   * public:essays:mkdir-out:
   * public:notes:build-all:        Compile all .md files in parallel with fingerprinting      (aliases: public:notes:notes)
   * public:notes:clean:            Remove output directory
   * public:notes:cmds:
   * public:notes:mkdir-out:
   
   [USER@ARCH test_repo]$ go-task clean
   task: [clean] rm -rf output
   task: [clean] find . -name '.task' -exec -I {} rm -r {} \;
   
   [USER@ARCH test_repo]$ go-task all -f --verbose --output=group
   task: "all" started
   task: "private:all" started
   task: "public:all" started
   task: "private:resume" started
   task: [private:resume:default] mkdir -p "../../output/private/resume"
   task: dynamic variable: "find . -name '*.md' -printf \"%f\\n\"" result: "FNAME_1.md\nFNAME_2.md\nFNAME_3.md\nFNAME_4.md\nFNAME_5.md\nFNAME_6.md\nFNAME_7.md\nFNAME_8.md\nFNAME_9.md\nFNAME_10.md\nFNAME_11.md\nFNAME_12.md\nFNAME_13.md\nFNAME_14.md\nFNAME_15.md\nFNAME_16.md\nFNAME_17.md\nFNAME_18.md\nFNAME_19.md\nFNAME_20.md\nFNAME_21.md\nFNAME_22.md\nFNAME_23.md\nFNAME_24.md\nFNAME_25.md\nFNAME_26.md\nFNAME_27.md\nFNAME_28.md\nFNAME_29\n.md"
   task: [private:resume:default] pdflatex -output-directory="../../output/private/resume" resume.tex 2>&1
   task: "public:essays:build-all" started
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" started
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" finished
   task: "public:essays:compile" finished
   task: "public:essays:mkdir-out" started
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: [public:essays:mkdir-out] mkdir -p ../../output/public/html/notes
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:compile" started
   task: "public:essays:compile" finished
   task: "public:essays:mkdir-out" finished
   task: "public:essays:build-all" finished
   task: "public:notes:build-all" started
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" finished
   task: "public:notes:mkdir-out" started
   task: [public:notes:mkdir-out] mkdir -p ../../output/public/html/notes
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:compile" started
   task: "public:notes:compile" finished
   task: "public:notes:mkdir-out" finished
   task: "public:notes:build-all" finished
   task: "public:all" finished
   This is pdfTeX, Version 3.141592653-2.6-1.40.29 (TeX Live 2026/Arch Linux) (preloaded format=pdflatex)
    restricted \write18 enabled.
   entering extended mode
   (./resume.tex
   LaTeX2e <2025-11-01>
   L3 programming layer <2026-01-19>
   (/usr/share/texmf-dist/tex/latex/base/article.cls
   Document Class: article 2025/01/22 v1.4n Standard LaTeX document class
   (/usr/share/texmf-dist/tex/latex/base/size10.clo))
   (/usr/share/texmf-dist/tex/latex/enumitem/enumitem.sty)
   (/usr/share/texmf-dist/tex/latex/titlesec/titlesec.sty)
   (/usr/share/texmf-dist/tex/latex/titling/titling.sty)
   (/usr/share/texmf-dist/tex/latex/geometry/geometry.sty
   (/usr/share/texmf-dist/tex/latex/graphics/keyval.sty)
   (/usr/share/texmf-dist/tex/generic/iftex/ifvtex.sty
   (/usr/share/texmf-dist/tex/generic/iftex/iftex.sty)))
   (/usr/share/texmf-dist/tex/latex/amsmath/amsmath.sty
   For additional information on amsmath, use the `?' option.
   (/usr/share/texmf-dist/tex/latex/amsmath/amstext.sty
   (/usr/share/texmf-dist/tex/latex/amsmath/amsgen.sty))
   (/usr/share/texmf-dist/tex/latex/amsmath/amsbsy.sty)
   (/usr/share/texmf-dist/tex/latex/amsmath/amsopn.sty))
   (/usr/share/texmf-dist/tex/latex/amsfonts/amssymb.sty
   (/usr/share/texmf-dist/tex/latex/amsfonts/amsfonts.sty))
   (/usr/share/texmf-dist/tex/latex/l3backend/l3backend-pdftex.def)
   No file resume.aux.
   *geometry* driver: auto-detecting
   *geometry* detected driver: pdftex
   (/usr/share/texmf-dist/tex/latex/amsfonts/umsa.fd)
   (/usr/share/texmf-dist/tex/latex/amsfonts/umsb.fd)
   Overfull \hbox (17.2222pt too wide) in paragraph at lines 74--94
   [][] []
   [1{/var/lib/texmf/fonts/map/pdftex/updmap/pdftex.map}]
   (../../output/private/resume/resume.aux) )
   (see the transcript file for additional information)</usr/share/texmf-dist/font
   s/type1/public/amsfonts/cm/cmbx10.pfb></usr/share/texmf-dist/fonts/type1/public
   /amsfonts/cm/cmbx12.pfb></usr/share/texmf-dist/fonts/type1/public/amsfonts/cm/c
   mr10.pfb></usr/share/texmf-dist/fonts/type1/public/amsfonts/cm/cmr12.pfb></usr/
   share/texmf-dist/fonts/type1/public/amsfonts/cm/cmr17.pfb></usr/share/texmf-dis
   t/fonts/type1/public/amsfonts/cm/cmsy10.pfb></usr/share/texmf-dist/fonts/type1/
   public/amsfonts/cm/cmti10.pfb></usr/share/texmf-dist/fonts/type1/public/amsfont
   s/cm/cmti12.pfb>
   Output written on ../../output/private/resume/resume.pdf (1 page, 126865 bytes)
   .
   Transcript written on ../../output/private/resume/resume.log.
   task: "private:resume" finished
   task: "private:all" finished
   task: "all" finished
   

   And here are the task files used.

   find . -name 'Taskfile.yml' -exec sh -c 'echo "\n=== {} ===\n"; cat "{}"' \;
   
   === ./Taskfile.yml ===
   
   # yaml-language-server: $schema=https://taskfile.dev/schema.json
   
   version: '3'
   
   includes:
     public:
       taskfile: ./public/Taskfile.yml
       dir: ./public
     private:
       taskfile: ./private/Taskfile.yml
       dir: ./private
   
   tasks:
     all:
       deps:
         - public:all
         - private:all
     clean:
       cmds:
         - rm -rf output
         - find . -name '.task' -exec -I {} rm -r {} \;
   
   === ./public/Taskfile.yml ===
   
   # yaml-language-server: $schema=https://taskfile.dev/schema.json
   
   version: '3'
   
   includes:
     essays:
       taskfile: ./essays/Taskfile.yml
       dir: ./essays
     notes:
       taskfile: ./notes/Taskfile.yml
       dir: ./notes
   
   tasks:
     all:
       cmds:
         - task: essays:build-all
         - task: notes:build-all
   
   === ./private/Taskfile.yml ===
   
   # yaml-language-server: $schema=https://taskfile.dev/schema.json
   
   version: '3'
   
   includes:
     resume:
       taskfile: ./resume/Taskfile.yml
       dir: ./resume
   
   tasks:
     all:
       silent: true
       deps:
       - resume
   
   === ./private/resume/Taskfile.yml ===
   
   # yaml-language-server: $schema=https://taskfile.dev/schema.json
   
   version: '3'
   
   output:
     group:
       error_only: true
   
   vars:
     TASK_OUTPUT: ../../output/private/resume
   
   tasks:
     default:
       silent: true
       desc: Compile My Resume
       cmds:
         - mkdir -p "{{.TASK_OUTPUT}}"
         - pdflatex -output-directory="{{.TASK_OUTPUT}}" resume.tex 2>&1
   
   === ./public/notes/Taskfile.yml ===
   
   # yaml-language-server: $schema=https://taskfile.dev/schema.json
   
   version: '3'
   
   vars:
     OUT_DIR: ../../output/public/html/notes
     PANDOC_FLAGS: --highlight-style=pygments --lua-filter=fix-links.lua
     SRC_DIR: .
   
   tasks:
   
     mkdir-out:
       cmds:
         - mkdir -p {{.OUT_DIR}}
       status:
         - test -d {{.OUT_DIR}}
   
     compile:
       internal: true
       label: 'compile-note-{{.FILE}}'
       requires:
         vars: [FILE, OUT_DIR, OUT]
       #sources:
       #  - '{{.FILE}}'
       #generates:
       #  - '{{.OUT}}'
       #cmds:
       #  - pandoc {{.PANDOC_FLAGS}} {{.FILE}} -o {{.OUT}}
     cmds:
       - echo {{.FILE}}
   
     build-all:
       desc: Compile all .md files in parallel with fingerprinting
       aliases: [notes]
       vars:
         FILES:
           sh: find {{.SRC_DIR}} -name '*.md' -printf "%f\n"
       deps:
         - task: mkdir-out
         - for:
             var: FILES
             split: "\n"
             as: FILE
           task: compile
           vars:
             FILE: '{{.FILE}}'
             OUT_DIR: '{{.OUT_DIR}}'
             OUT: '{{.OUT_DIR}}/{{base .FILE | trimSuffix ".md"}}.html'
     clean:
       desc: Remove output directory
       cmds:
         - rm -rf {{.OUT_DIR}}
   
   === ./public/essays/Taskfile.yml ===
   
   # yaml-language-server: $schema=https://taskfile.dev/schema.json
   
   version: '3'
   
   vars:
     OUT_DIR: ../../output/public/html/essays
     PANDOC_FLAGS: --highlight-style=pygments --lua-filter=fix-links.lua
     SRC_DIR: .
   
   tasks:
   
     mkdir-out:
       cmds:
         - mkdir -p {{.OUT_DIR}}
       status:
         - test -d {{.OUT_DIR}}
   
     compile:
       internal: true
       label: 'compile-essay-{{.FILE}}'
       requires:
         vars: [FILE, OUT_DIR, OUT]
       #sources:
       #  - '{{.FILE}}'
       #generates:
       #  - '{{.OUT}}'
       #cmds:
       #  - pandoc {{.PANDOC_FLAGS}} {{.FILE}} -o {{.OUT}}
     cmds:
       - echo {{.FILE}}
   
     build-all:
       desc: Compile all .md files in parallel with fingerprinting
       aliases: [essays]
       vars:
         FILES:
           sh: find {{.SRC_DIR}} -name '*.md' -printf "%f\n"
       deps:
         - task: mkdir-out
         - for:
             var: FILES
             split: "\n"
             as: FILE
           task: compile
           vars:
             FILE: '{{.FILE}}'
             OUT_DIR: '{{.OUT_DIR}}'
             OUT: '{{.OUT_DIR}}/{{base .FILE | trimSuffix ".md"}}.html'
     clean:
       desc: Remove output directory
       cmds:
         - rm -rf {{.OUT_DIR}}
   
6. task-bot

   removed

   state: awaiting responseWaiting for issue author to respond.Waiting for issue author to respond.

   on Mar 21, 2026
7. trulede commented on Mar 22, 2026

   

   trulede

   on Mar 22, 2026

   Contributor

   More actions

   @loganfred the sources is causing the crash, so you need to capture that in the log (you commented it out). It should not crash.

   Its helpful to have a reliable way to reproduce the problem. So if we discover the exact trigger of that ... helpful.

   I do similar things with Task, so this should work. The error itself indicates something in particular, but need to know the condition which triggers it to understand why.
8. loganfred commented on Mar 22, 2026

   

   loganfred

   on Mar 22, 2026

   Author

   More actions

   I found some time to switch to a minimal example.

   I think I'm seeing that explicit dir: is not being honored for multiple includes:
   As deps: which dir is a race and as cmds: the first dir is taken for all

   I haven't worked up to sources: yet. I would guess that the fingerprinting is all messed up each time I switch from the leaf node tasks (which work fine) to running in parallel (deps) or sequence (cmds).

   bug-repro/
   ├── Taskfile.yml
   ├── alpha/
   │   ├── Taskfile.yml
   │   ├── one.txt
   │   └── two.txt
   └── beta/
       ├── Taskfile.yml
       ├── three.txt
       └── four.txt
   

   Root Taskfile.yml:

   version: '3'
   
   includes:
     alpha:
       taskfile: ./alpha/Taskfile.yml
       dir: ./alpha
     beta:
       taskfile: ./beta/Taskfile.yml
       dir: ./beta
   
   tasks:
     all:
       cmds:
         - task: alpha:show
         - task: beta:show
     all-parallel:
       deps:
         - alpha:show
         - beta:show

   alpha/Taskfile.yml:

   version: '3'
   
   vars:
     MY_VAR: ALPHA
     SRC_DIR: .
   
   tasks:
     show:
       vars:
         FILES:
           sh: find {{.SRC_DIR}} -name '*.txt' -printf "%f\n"
       cmds:
         - echo "MY_VAR={{.MY_VAR}}"
         - echo "SRC_DIR={{.SRC_DIR}}"
         - echo "FILES={{.FILES}}"

   beta/Taskfile.yml: (identical structure, MY_VAR: BETA)

   version: '3'
   
   vars:
     MY_VAR: BETA
     SRC_DIR: .
   
   tasks:
     show:
       vars:
         FILES:
           sh: find {{.SRC_DIR}} -name '*.txt' -printf "%f\n"
       cmds:
         - echo "MY_VAR={{.MY_VAR}}"
         - echo "SRC_DIR={{.SRC_DIR}}"
         - echo "FILES={{.FILES}}"

   Expected behavior

   Each included taskfile's sh: var should execute relative to the dir: specified in its includes: block.

   # go-task all
   alpha:show -> MY_VAR=ALPHA  FILES=one.txt, two.txt
   beta:show  -> MY_VAR=BETA   FILES=three.txt, four.txt
   

   Actual behavior

   Sequential (go-task all) — beta's sh: command runs in alpha's directory:

   alpha:show -> MY_VAR=ALPHA  FILES=one.txt, two.txt
   beta:show  -> MY_VAR=BETA   FILES=one.txt, two.txt
   

   Parallel (go-task all-parallel) — race condition, both get the same files:

   alpha:show -> MY_VAR=ALPHA  FILES=three.txt, four.txt
   beta:show  -> MY_VAR=BETA   FILES=three.txt, four.txt
   
9. loganfred commented on Mar 22, 2026

   

   loganfred

   on Mar 22, 2026

   Last edited by loganfred

   Author

   More actions

   FWIW the bots suggest review in these areas:

   taskfile/ask/taskfile.go:70-72 may have a copy-paste error where t1.vars are being merged into t1 instead of t2.vars

   compiler.go:160 may be caching dynamic vars by shell string, which may not permit re-using the same shell commands to create dynamic variables.

   taskfile/ask/tasks.go:179 may not allow tasks that already got their vars from a nested include to keep them

   I have a patch I can PR if it would be helpful. It passes my minimal example, solves the real-world problem, and the test suite passes, but I'll be honest I'm not a go programmer it was 3% me and 97% claude. I just wanted a workaround to keep tinkering.
10. loganfred

    changed the title [-]SIGSEGV in fingerprint possibly due to duplicate filenames throughout different dirs and namespaces[/-] [+]SIGSEGV in fingerprint; explicit dir include dynamic vars are not isolated and caching prohibits exact shell command re-use[/+] on Mar 22, 2026
11. loganfred commented on Mar 23, 2026

    

    loganfred

    on Mar 23, 2026

    Author

    More actions

    Ugh, I'm still getting the SIGSEGV actually, even with the patched binary that isolates the dynamic variables.

    I'll try to learn how to use delve so I can see what's happening and report back.
12. trulede commented on Mar 23, 2026

    

    trulede

    on Mar 23, 2026

    Contributor

    More actions

    The 'dir' problem, possibly a clear bug. Just a bit surprised no one else has noticed.

    The 'files' ... I would think, with the dir problem fixed, that you would not see any problem with the sequential task calls.

    For the dep case, the tasks get compiled first. Could be a problem there if for some reason the templater cache was shared between them.

    You could try to form the sources differently, and see if that prevents the problem. That would be a proof. For instance "{{.SRC_DIR}}" and "./{{.SRC_DIR}}".
13. trulede commented on Mar 23, 2026

    

    trulede

    on Mar 23, 2026

    Last edited by trulede

    Contributor

    More actions

    With this setup I don't observe the directory problem. Be careful with global vars (taskfile level) when importing, I suggest not doing that. Try hardcoding or task level vars.

    This bit, move them to the task and see if it helps.

    vars:
      MY_VAR: BETA
      SRC_DIR: .
    

    I will try the file listing a bit later.

    $ cat Taskfile.yml
    version: '3'
    
    includes:
      alpha:
        taskfile: ./alpha/Taskfile.yml
        dir: ./alpha
      beta:
        taskfile: ./beta/Taskfile.yml
        dir: ./beta
    
    tasks:
      seq:
        cmds:
          - task: alpha:info
          - task: beta:info
      dep:
        deps:
          - alpha:info
          - beta:info
    
    $ cat alpha/Taskfile.yml
    version: '3'
    
    tasks:
      info:
        cmds:
          - echo "TASK={{.TASK}}"
          - echo "TASK_DIR={{.TASK_DIR}}"
          - echo "PWD=$(pwd)"
    $ cat beta/Taskfile.yml
    version: '3'
    
    tasks:
      info:
        cmds:
          - echo "TASK={{.TASK}}"
          - echo "TASK_DIR={{.TASK_DIR}}"
          - echo "PWD=$(pwd)
    

    task dep
    task: [alpha:info] echo "TASK=alpha:info"
    task: [beta:info] echo "TASK=beta:info"
    TASK=alpha:info
    task: [alpha:info] echo "TASK_DIR=/home/git/task/ISSUES/2757/alpha"
    TASK=beta:info
    task: [beta:info] echo "TASK_DIR=/home/git/task/ISSUES/2757/beta"
    TASK_DIR=/home/git/task/ISSUES/2757/beta
    task: [beta:info] echo "PWD=$(pwd)"
    TASK_DIR=/home/git/task/ISSUES/2757/alpha
    task: [alpha:info] echo "PWD=$(pwd)"
    PWD=/home/git/task/ISSUES/2757/alpha
    PWD=/home/git/task/ISSUES/2757/beta
    
14. loganfred commented on Mar 23, 2026

    

    loganfred

    on Mar 23, 2026

    Author

    More actions

    With this setup I don't observe the directory problem.

    I think it has to do with include: since I ran the simpler scenario from the previous message on my machine and it worked as expected.

    Try hardcoding or task level vars.

    I re-ran my minimalist example. 3.49.1+aa83651d is producing the same result with task level vars as with the global vars.
    Hard-coding does fix the dir: with include: issue, I used ../alpha and ../beta as arguments to find

    Output from:

    1. 3.49.1+aa83651d version with global vars (bug result)
    2. Patched Version with global vars (expected result)
    3. 3.49.1+aa83651d version with local vars (bug result)
    4. 3.49.1+aa83651d version ../alpha and ../beta for distinct paths (expected result)

    And the Taskfile.yml files

    3.49.1+aa83651d version with global vars (bug result)

    [USER@ARCH bug-repro]$ go-task all --output=prefixed
    task: [alpha:show] echo "MY_VAR=ALPHA"
    [alpha:show] MY_VAR=ALPHA
    task: [alpha:show] echo "SRC_DIR=."
    [alpha:show] SRC_DIR=.
    task: [alpha:show] echo "FILES=one.txt
    two.txt"
    [alpha:show] FILES=one.txt
    [alpha:show] two.txt
    task: [beta:show] echo "MY_VAR=BETA"
    [beta:show] MY_VAR=BETA
    task: [beta:show] echo "SRC_DIR=."
    [beta:show] SRC_DIR=.
    task: [beta:show] echo "FILES=one.txt
    two.txt"
    [beta:show] FILES=one.txt
    [beta:show] two.txt
    [USER@ARCH bug-repro]$ go-task all-parallel --output=prefixed
    task: [alpha:show] echo "MY_VAR=ALPHA"
    task: [beta:show] echo "MY_VAR=BETA"
    [alpha:show] MY_VAR=ALPHA
    task: [alpha:show] echo "SRC_DIR=."
    [beta:show] MY_VAR=BETA
    task: [beta:show] echo "SRC_DIR=."
    [alpha:show] SRC_DIR=.
    task: [alpha:show] echo "FILES=one.txt
    two.txt"
    [beta:show] SRC_DIR=.
    task: [beta:show] echo "FILES=one.txt
    two.txt"
    [alpha:show] FILES=one.txt
    [alpha:show] two.txt
    [beta:show] FILES=one.txt
    [beta:show] two.txt
    

    Patched Version with global vars (expected result)

    [USER@ARCH bug-repro]$ ../go-task-patched all --output=prefixed
    task: [alpha:show] echo "MY_VAR=ALPHA"
    [alpha:show] MY_VAR=ALPHA
    task: [alpha:show] echo "SRC_DIR=."
    [alpha:show] SRC_DIR=.
    task: [alpha:show] echo "FILES=one.txt
    two.txt"
    [alpha:show] FILES=one.txt
    [alpha:show] two.txt
    task: [beta:show] echo "MY_VAR=BETA"
    [beta:show] MY_VAR=BETA
    task: [beta:show] echo "SRC_DIR=."
    [beta:show] SRC_DIR=.
    task: [beta:show] echo "FILES=four.txt
    three.txt"
    [beta:show] FILES=four.txt
    [beta:show] three.txt
    [USER@ARCH bug-repro]$ ../go-task-patched all-parallel --output=prefixed
    task: [alpha:show] echo "MY_VAR=ALPHA"
    task: [beta:show] echo "MY_VAR=BETA"
    [alpha:show] MY_VAR=ALPHA
    task: [alpha:show] echo "SRC_DIR=."
    [beta:show] MY_VAR=BETA
    task: [beta:show] echo "SRC_DIR=."
    [alpha:show] SRC_DIR=.
    task: [alpha:show] echo "FILES=one.txt
    two.txt"
    [beta:show] SRC_DIR=.
    task: [beta:show] echo "FILES=four.txt
    three.txt"
    [alpha:show] FILES=one.txt
    [alpha:show] two.txt
    [beta:show] FILES=four.txt
    [beta:show] three.txt
    

    3.49.1+aa83651d version with local vars (bug result)

    [USER@ARCH bug-repro]$ go-task all --output=prefixed
    task: [alpha:show] echo "MY_VAR=ALPHA"
    [alpha:show] MY_VAR=ALPHA
    task: [alpha:show] echo "SRC_DIR=."
    [alpha:show] SRC_DIR=.
    task: [alpha:show] echo "FILES=one.txt
    two.txt"
    [alpha:show] FILES=one.txt
    [alpha:show] two.txt
    task: [beta:show] echo "MY_VAR=BETA"
    [beta:show] MY_VAR=BETA
    task: [beta:show] echo "SRC_DIR=."
    [beta:show] SRC_DIR=.
    task: [beta:show] echo "FILES=one.txt
    two.txt"
    [beta:show] FILES=one.txt
    [beta:show] two.txt
    [USER@ARCH bug-repro]$ go-task all-parallel --output=prefixed
    task: [beta:show] echo "MY_VAR=BETA"
    task: [alpha:show] echo "MY_VAR=ALPHA"
    [beta:show] MY_VAR=BETA
    task: [beta:show] echo "SRC_DIR=."
    [alpha:show] MY_VAR=ALPHA
    task: [alpha:show] echo "SRC_DIR=."
    [beta:show] SRC_DIR=.
    [alpha:show] SRC_DIR=.
    task: [beta:show] echo "FILES=four.txt
    three.txt"
    task: [alpha:show] echo "FILES=four.txt
    three.txt"
    [beta:show] FILES=four.txt
    [beta:show] three.txt
    [alpha:show] FILES=four.txt
    [alpha:show] three.txt
    
    

    3.49.1+aa83651d version ../alpha and ../beta for distinct paths (expected result)

    [USER@ARCH bug-repro]$ go-task all --output=prefixed
    task: [alpha:show] echo "MY_VAR=ALPHA"
    [alpha:show] MY_VAR=ALPHA
    task: [alpha:show] echo "SRC_DIR=."
    [alpha:show] SRC_DIR=.
    task: [alpha:show] echo "FILES=one.txt
    two.txt"
    [alpha:show] FILES=one.txt
    [alpha:show] two.txt
    task: [beta:show] echo "MY_VAR=BETA"
    [beta:show] MY_VAR=BETA
    task: [beta:show] echo "SRC_DIR=."
    [beta:show] SRC_DIR=.
    task: [beta:show] echo "FILES=four.txt
    three.txt"
    [beta:show] FILES=four.txt
    [beta:show] three.txt
    [USER@ARCH bug-repro]$ go-task all-parallel --output=prefixed
    task: [alpha:show] echo "MY_VAR=ALPHA"
    task: [beta:show] echo "MY_VAR=BETA"
    [alpha:show] MY_VAR=ALPHA
    task: [alpha:show] echo "SRC_DIR=."
    [beta:show] MY_VAR=BETA
    task: [beta:show] echo "SRC_DIR=."
    [alpha:show] SRC_DIR=.
    task: [alpha:show] echo "FILES=one.txt
    two.txt"
    [beta:show] SRC_DIR=.
    task: [beta:show] echo "FILES=four.txt
    three.txt"
    [alpha:show] FILES=one.txt
    [alpha:show] two.txt
    [beta:show] FILES=four.txt
    [beta:show] three.txt
    
    

    ==> Taskfile.yml <==
    Version: '3'
    
    includes:
      alpha:
        taskfile: ./alpha/Taskfile.yml
        dir: ./alpha
      beta:
        taskfile: ./beta/Taskfile.yml
        dir: ./beta
    
    tasks:
      all:
        desc: "sequential via cmds — bug reproduces"
        cmds:
          - task: alpha:show
          - task: beta:show
      all-parallel:
        desc: "parallel via deps — also test this path"
        deps:
          - alpha:show
          - beta:show
    
    ==> alpha/Taskfile.yml <==
    version: '3'
    
    #vars:
    #  MY_VAR: ALPHA
    #  SRC_DIR: .
    
    tasks:
      show:
        vars:
          MY_VAR: ALPHA
          SRC_DIR: .
          FILES:
            sh: find {{.SRC_DIR}} -name '*.txt' -printf "%f\n"
        cmds:
          - echo "MY_VAR={{.MY_VAR}}"
          - echo "SRC_DIR={{.SRC_DIR}}"
          - echo "FILES={{.FILES}}"
    
    ==> beta/Taskfile.yml <==
    version: '3'
    
    #vars:
    #  MY_VAR: BETA
    #  SRC_DIR: .
    
    tasks:
      show:
        vars:
          MY_VAR: BETA
          SRC_DIR: .
          FILES:
            sh: find {{.SRC_DIR}} -name '*.txt' -printf "%f\n"
        cmds:
          - echo "MY_VAR={{.MY_VAR}}"
          - echo "SRC_DIR={{.SRC_DIR}}"
          - echo "FILES={{.FILES}}"
15. loganfred commented on Mar 24, 2026

    

    loganfred

    on Mar 24, 2026

    Author

    More actions

    AHA, the segfault is unrelated.

    Here is the summary from my side so far:

    1. if you have multiple include:-ed tasks, each with their own dir:, those tasks aren't running from the correct folders.
    2. dir: {{.FOLDER}} may not work
    3. included: tasks that re-use the same exact sh: VAR (e.g. find . -name '*.md') in a different dir: may get the cache value from another task
    4. in a root -> parent -> A / B situation with nested includes, the outer merge may be clobbering existing inner merges
    5. apostrophes in sh: VARS create segfaults (e.g. pandoc chesterton's_fence.md)

    Shame on me for overlooking a stupid filename, but it probably shouldn't segfault

    #2757 seems to fix 1, 2, 3, 4

    Segfault minimal reproduction

    repro/
    ├── Taskfile.yml
    └── chesterton's_fence.txt    # any file with a ' in the name
    

      version: '3'
    
      tasks:
        show:
          vars:
            FILES:
              sh: find . -name '*.txt' -printf "%f\n"
          deps:
            - for:
                var: FILES
                split: "\n"
                as: FILE
              task: process
              vars:
                FILE: '{{.FILE}}'
    
        process:
          internal: true
          label: 'process-{{.FILE}}'
          requires:
            vars: [FILE]
          sources:
            - '{{.FILE}}'
          cmds:
            - echo "{{.FILE}}"

    [USER@ARCH bug-repro]$ go-task quote-segfault:show
    panic: runtime error: invalid memory address or nil pointer dereference
    [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x55cb1eb73b3b]
    
    goroutine 71 [running]:
    mvdan.cc/sh/v3/expand.FieldsSeq.func1(0x1d2ed38cb1d0)
    	/build/go-task/src/pkg/mod/mvdan.cc/sh/v3@v3.12.1-0.20260124232039-e74afc18e65b/expand/expand.go:459 +0x9b
    mvdan.cc/sh/v3/expand.Fields(0x1d2ed3a82500, {0x1d2ed3b02a68, 0x1, 0x1})
    	/build/go-task/src/pkg/mod/mvdan.cc/sh/v3@v3.12.1-0.20260124232039-e74afc18e65b/expand/expand.go:442 +0x125
    github.com/go-task/task/v3/internal/execext.ExpandFields({0x1d2ed37a64e0?, 0x45?})
    	/build/go-task/src/go-task/internal/execext/exec.go:139 +0x18e
    github.com/go-task/task/v3/internal/fingerprint.glob({0x1d2ed4098960?, 0x1d2ed3d3d570?}, {0x1d2ed4096390?, 0x18?})
    	/build/go-task/src/go-task/internal/fingerprint/glob.go:29 +0x37
    github.com/go-task/task/v3/internal/fingerprint.Globs({0x1d2ed4098960, 0x45}, {0x1d2ed3b02990, 0x1, 0x0?})
    	/build/go-task/src/go-task/internal/fingerprint/glob.go:15 +0xfb
    github.com/go-task/task/v3/internal/fingerprint.(*ChecksumChecker).checksum(0x55cb1e9661a5?, 0x18?)
    	/build/go-task/src/go-task/internal/fingerprint/sources_checksum.go:91 +0x45
    github.com/go-task/task/v3/internal/fingerprint.(*ChecksumChecker).Value(0x0?, 0x1d2ed3b255a0?)
    	/build/go-task/src/go-task/internal/fingerprint/sources_checksum.go:76 +0x13
    github.com/go-task/task/v3.(*Executor).compiledTask(0x1d2ed3a2d680, 0x1d2ed3b243c0, 0x0)
    	/build/go-task/src/go-task/variables.go:193 +0xfd4
    github.com/go-task/task/v3.(*Executor).FastCompiledTask(...)
    	/build/go-task/src/go-task/variables.go:30
    github.com/go-task/task/v3.(*Executor).RunTask(0x1d2ed3a2d680, {0x55cb216c9c50, 0x55cb218f5f00}, 0x1d2ed3b243c0)
    	/build/go-task/src/go-task/task.go:142 +0x1a8
    github.com/go-task/task/v3.(*Executor).runDeps.func1()
    	/build/go-task/src/go-task/task.go:329 +0x9a
    golang.org/x/sync/errgroup.(*Group).Go.func1()
    	/build/go-task/src/pkg/mod/golang.org/x/sync@v0.19.0/errgroup/errgroup.go:93 +0x50
    created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 1
    	/build/go-task/src/pkg/mod/golang.org/x/sync@v0.19.0/errgroup/errgroup.go:78 +0x95
    

    As a workaround, it seems like you can hard-code it or do something lovecraftian like this:

     sources:
        - "{{.FILE | replace \"'\" \"\\\\'\"}}"
    
16. trulede commented on Mar 24, 2026

    

    trulede

    on Mar 24, 2026

    Contributor

    More actions

    Template function quote or shellQuote might also help. We would have to look at mvdan to understand exactly what is going on, the shell obviously expects something, so it needs escaping.

    This:

    vars:
            FILES:
              sh: find . -name '*.txt' -printf "%f\n"
    

    is evaluated before the task runs, so the dir the command runs in may not be what you expect. There is a issue open about that ... its not so easy to fix.

    There are issues for all of these things already. And PR's too in some cases.
17. trulede

    added

    state: duplicateDuplicates another issue.Duplicates another issue.

    and removed

    state: needs triageWaiting to be triaged by a maintainer.Waiting to be triaged by a maintainer.

    on Mar 26, 2026
18. trulede commented on Apr 15, 2026

    

    trulede

    on Apr 15, 2026

    Contributor

    More actions

    @loganfred Did you try quote or shellQuote? Quoting the file name correctly seems to be the root cause of your problem.

    I'm not sure if task should quote/escape this automatically, perhaps your AI bot can find the place in the code that does escaping and write a PR there? There is a place ....
19. trulede

    self-assigned this

    on Apr 15, 2026
20. trulede

    added

    state: awaiting responseWaiting for issue author to respond.Waiting for issue author to respond.

    on Apr 15, 2026
21. trulede

    assigned

    trulede

    and unassigned

    trulede

    on Apr 19, 2026
22. trulede commented on Apr 25, 2026

    

    trulede

    on Apr 25, 2026

    Contributor

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    @loganfred I may have also found a solution to the panic.

    #2810
23. loganfred commented on Apr 25, 2026

    

    loganfred

    on Apr 25, 2026

    Author

    More actions

    @loganfred Did you try quote or shellQuote? Quoting the file name correctly seems to be the root cause of your problem.

    I'm not sure if task should quote/escape this automatically, perhaps your AI bot can find the place in the code that does escaping and write a PR there? There is a place ....

    Yes, the fixing the shell quoting solved the panic, but I'm glad #2810 will handle it.

    It seems like the other footguns I stumbled into are covered by other issues, so I'll update the title to be clearer and close this one.

    Thanks for the assistance, I think the project is neat.
24. github-actions

    removed

    state: awaiting responseWaiting for issue author to respond.Waiting for issue author to respond.

    on Apr 25, 2026
25. loganfred

    changed the title [-]SIGSEGV in fingerprint; explicit dir include dynamic vars are not isolated and caching prohibits exact shell command re-use[/-] [+]SIGSEGV / panic in fingerprint from apostrophe in env var shell command[/+] on Apr 25, 2026
26. loganfred

    changed the title [-]SIGSEGV / panic in fingerprint from apostrophe in env var shell command[/-] [+]SIGSEGV / panic in fingerprint from apostrophe in env var shell command filename[/+] on Apr 25, 2026
27. loganfred

    closed this as completedon Apr 25, 2026