Re: branch master segfault (2019-02-05)

[Philippe Vaucher]

Hooray! My intuition was right (portable dumper issue):

```

address@hidden:/opt/emacs-git# git bisect start master emacs-26.1.91

address@hidden:/opt/emacs-git# git bisect run bash -c 'git reset --hard; make -j8 &>/dev/null || exit 125; src/emacs -f save-buffers-kill-emacs &>/dev/null || exit 1'

(...snip...)

d12e5d003d503025c1c9b0335d6518a6c3bdfae1 is the first bad commit

commit d12e5d003d503025c1c9b0335d6518a6c3bdfae1

Author: Daniel Colascione <address@hidden>

Date:   Tue Jan 15 17:36:54 2019 -0500

    Add portable dumper

(...snip...)

address@hidden:/opt/emacs-git# git bisect log

# bad: [19fbef549a94ccf733367d29438204e94a00e911] Fix Bug#34196

# good: [d8525ae41d07f9ea629d610de791064180423b6a] Bump Emacs version to 26.1.91

git bisect start 'master' 'emacs-26.1.91'

# good: [aaffae8458dcd774540e7e6b4219c8b5a9902075] Add debug facility for formatting in rr sessions

git bisect good aaffae8458dcd774540e7e6b4219c8b5a9902075

# good: [a0605d96187bc4103a982cededcd12e2628aba66] Fix MinGW compilation problem in timefns.c

git bisect good a0605d96187bc4103a982cededcd12e2628aba66

# good: [34b4da377ae02a0c505574f5ca5f146e92cfd046] Fix an eshell ls dired test for non-recent files

git bisect good 34b4da377ae02a0c505574f5ca5f146e92cfd046

# good: [34b4da377ae02a0c505574f5ca5f146e92cfd046] Fix an eshell ls dired test for non-recent files

git bisect good 34b4da377ae02a0c505574f5ca5f146e92cfd046

# bad: [655badc33e6ee9bfbc6c6c9084bf768f8102824d] ; Copyright fixes for pdumper files

git bisect bad 655badc33e6ee9bfbc6c6c9084bf768f8102824d

# good: [fb10834a602416f8422131d5ce9dabcc28e57be4] Avoid that unwind_format_mode_line messes up buffer points (Bug#32777)

git bisect good fb10834a602416f8422131d5ce9dabcc28e57be4

# good: [517b0aa46663b6173bb31a018aee18a82f2ca1d9] Merge from origin/emacs-26

git bisect good 517b0aa46663b6173bb31a018aee18a82f2ca1d9

# good: [c342b26371480316024e1e5d63cd8b3f035dda69] Fix drag and drop behaviour on NS (bug#30929)

git bisect good c342b26371480316024e1e5d63cd8b3f035dda69

# good: [cdb082322d4209c5104bc1a98b21bf3dd75e8f17] Fix icomplete's cycling when filename filtering kicks in

git bisect good cdb082322d4209c5104bc1a98b21bf3dd75e8f17

# good: [2a3bd6798e9670828f0402079fcc116d6d6b042d] Avoid using obsolete accept-process-output arg

git bisect good 2a3bd6798e9670828f0402079fcc116d6d6b042d

# bad: [6b9fa8804533a695094a930d634d2d6617e2b6c7] Make sure dump-mode is nil after dump

git bisect bad 6b9fa8804533a695094a930d634d2d6617e2b6c7

# bad: [02976d67369699660add46d548f0d1593885334b] Add NEWS for pdumper

git bisect bad 02976d67369699660add46d548f0d1593885334b

# bad: [d12e5d003d503025c1c9b0335d6518a6c3bdfae1] Add portable dumper

git bisect bad d12e5d003d503025c1c9b0335d6518a6c3bdfae1

# first bad commit: [d12e5d003d503025c1c9b0335d6518a6c3bdfae1] Add portable dumper

```

I quickly looked at the pdumper commit for clues but couldn't find any.

Kind regards,

Philippe