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bug#13018: fport_fill_input should handle EINTR

From: Aidan Gauland
Subject: bug#13018: fport_fill_input should handle EINTR
Date: Fri, 29 Mar 2013 20:35:53 +1300
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.2 (gnu/linux)

> Aidan, do you have a test case?

I haven't been able to reproduce this with a minimal example, but I can
consistently reproduce it with my IRC bot

Replace the last two lines (lines 22 and 23) of run-cbot.scm with...

(define bot (make-bot "Cunning_Bot" "Cunning_Bot" "Cunning Bot" 
"chat.freenode.net" 6667))
(sigaction SIGINT
  (lambda ()
    (disconnect-bot bot)))
(start-bot bot '("#cunningbot"))

...run it (run-cbot.scm), and after it says

Setting up IRC connection...done.
Joining channels...done.

type ^C

I get this backtrace:

In ice-9/boot-9.scm:
 157: 12 [catch #t #<catch-closure 9a1020> ...]
In unknown file:
   ?: 11 [apply-smob/1 #<catch-closure 9a1020>]
In ice-9/boot-9.scm:
  63: 10 [call-with-prompt prompt0 ...]
In ice-9/eval.scm:
 421: 9 [eval # #]
In ice-9/boot-9.scm:
2131: 8 [save-module-excursion #<procedure 9a01c0 at ice-9/boot-9.scm:3711:3 
3718: 7 [#<procedure 9a01c0 at ice-9/boot-9.scm:3711:3 ()>]
In unknown file:
   ?: 6 [load-compiled/vm 
In /home/aidan/src/cunning-bot/bot.scm:
 260: 5 [start-bot # #]
 115: 4 [read-line-irc #]
In ice-9/rdelim.scm:
 129: 3 [read-line #<input-output: socket 11> trim]
In unknown file:
   ?: 2 [%read-line #<input-output: socket 11>]
In ice-9/boot-9.scm:
 184: 1 [throw system-error "fport_fill_input" "~A" ("Interrupted system call") 
In /home/aidan/src/cunning-bot/run-cbot.scm:
  24: 0 [#<procedure 12007a0 at /home/aidan/src/cunning-bot/run-cbot.scm:24:2 
()> 2]

/home/aidan/src/cunning-bot/run-cbot.scm:24:2: In procedure #<procedure 12007a0 
at /home/aidan/src/cunning-bot/run-cbot.scm:24:2 ()>:
/home/aidan/src/cunning-bot/run-cbot.scm:24:2: Wrong number of arguments to 
#<procedure 12007a0 at /home/aidan/src/cunning-bot/run-cbot.scm:24:2 ()>

Could this be caused by a bug in spells?

I wish I could give a simpler test case. :(

Aidan Gauland

(Sorry I forgot to group reply the first time.)

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