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bug#31848: 26.1; M-x server-start crashes if extraneous server file exis


From: Eli Zaretskii
Subject: bug#31848: 26.1; M-x server-start crashes if extraneous server file exists
Date: Fri, 15 Jun 2018 21:20:46 +0300

> From: Tim Harper <address@hidden>
> Date: Fri, 15 Jun 2018 11:15:05 -0600
> 
> Emacs on OS X crashes when stale server auth file is present. To reproduce:
> 
> 1) Start Emacs 26.1
> 2) Run server-start
> 3) Copy the file `server` in the {server-auth-dir} folder to `server-2`
> 4) Quit Emacs
> 5) Rename `server-2` file to `server`
> 6) Relaunch Emacs
> 7) Run server-start
> 8) Observe crash

It doesn't crash here, but I'm not on macOS.

> Crash report:
> 
> Process:               Emacs-x86_64-10_10 [54595]
> Path:                  
> /Applications/Emacs.app/Contents/MacOS/Emacs-x86_64-10_10
> Identifier:            org.gnu.Emacs
> Version:               Version 26.1 (9.0)
> Code Type:             X86-64 (Native)
> Parent Process:        ??? [1]
> Responsible:           Emacs-x86_64-10_10 [54595]
> User ID:               501
> 
> Date/Time:             2018-06-15 11:11:33.871 -0600
> OS Version:            Mac OS X 10.13.4 (17E199)
> Report Version:        12
> Anonymous UUID:        FAFB472E-6635-1BF9-3A87-39490D81E931
> 
> Sleep/Wake UUID:       62FC5A60-36B2-453C-832A-C3FD5AA072DE
> 
> Time Awake Since Boot: 180000 seconds
> Time Since Wake:       12000 seconds
> 
> System Integrity Protection: disabled
> 
> Crashed Thread:        0  Dispatch queue: com.apple.main-thread
> 
> Exception Type:        EXC_BAD_ACCESS (SIGABRT)
> Exception Codes:       KERN_INVALID_ADDRESS at 0x000000000000003f
> Exception Note:        EXC_CORPSE_NOTIFY
> 
> VM Regions Near 0x3f:
> --> 
>     __TEXT                 0000000100000000-0000000100233000 [ 2252K] r-x/rwx 
> SM=COW  /Applications/Emacs.app/Contents/MacOS/Emacs-x86_64-10_10
> 
> Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
> 0   libsystem_kernel.dylib            0x00007fff654e5b6e __pthread_kill + 10
> 1   libsystem_pthread.dylib           0x00007fff656b0080 pthread_kill + 333
> 2   libsystem_c.dylib                 0x00007fff653f36fe raise + 26
> 3   Emacs-x86_64-10_10                0x00000001000c0a81 
> terminate_due_to_signal + 161
> 4   Emacs-x86_64-10_10                0x00000001000dde43 emacs_abort + 19
> 5   Emacs-x86_64-10_10                0x00000001001c4a0c ns_term_shutdown + 
> 124
> 6   Emacs-x86_64-10_10                0x00000001000c0c55 shut_down_emacs + 261
> 7   Emacs-x86_64-10_10                0x00000001000c0a46 
> terminate_due_to_signal + 102
> 8   Emacs-x86_64-10_10                0x00000001000df736 
> deliver_fatal_thread_signal + 134
> 9   Emacs-x86_64-10_10                0x00000001000e0b8a handle_sigsegv + 170
> 10  libsystem_platform.dylib          0x00007fff656a3f5a _sigtramp + 26
> 11  ???                               000000000000000000 0 + 0
> 12  Emacs-x86_64-10_10                0x0000000100146a67 funcall_subr + 247
> 13  Emacs-x86_64-10_10                0x0000000100146114 Ffuncall + 740

Can you tell what Lisp function is being called here?





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