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Core dump


From: Vladimir Marek
Subject: Core dump
Date: Thu, 27 Apr 2017 21:56:09 +0200
User-agent: Mutt/1.5.22.1-rc1 (2013-10-16)

Hi,

array_to_key() {
       # Converts 1 2 3 -> 1,2,3, (comma at the end)
       printf '%d,' "$@"
}

multi_store() {
       local array_name="$1"; shift
       local value="$1"; shift
       if unset -v "$array_name"; then
              declare -A $array_name
              declare -- $array_name[$(array_to_key "$@")]="$value"
       fi
}

multi_store CHESS_3D queen 2 2 5

(segfault)



pstack core
core 'core' of 8005:    /bin/bash
 00000000004bb8ea hash_search () + 7a
 00000000004ce08d assoc_insert () + 1d
 00000000004cb259 assign_array_element () + 30d
 00000000004eab03 declare_builtin () + 5e7
 00000000004713ff ???????? ()
 0000000000470302 ???????? ()
 0000000000469824 execute_command_internal () + 72c
 000000000046d2f3 ???????? ()
 000000000046965a execute_command_internal () + 562
 0000000000469026 execute_command () + 9e
 00000000004696d5 execute_command_internal () + 5dd
 000000000046d2f3 ???????? ()
 000000000046965a execute_command_internal () + 562
 0000000000469695 execute_command_internal () + 59d
 0000000000470bef ???????? ()
 000000000047147e ???????? ()
 00000000004703a2 ???????? ()
 0000000000469824 execute_command_internal () + 72c
 0000000000469026 execute_command () + 9e
 0000000000449f88 reader_loop () + 318
 0000000000447f37 main () + e9b
 0000000000446f3c ???????? ()


Confirmed on linux and solaris. The intention was to create something
similar to famous 'upvar' function but dealing with a hash. I'm not 100%
sure it should work this way, but core dump seems to be a bit of an
overreaction :)

Thank you for bash, Chet!
-- 
        Vlad



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