Re: memory leak?

[Dave D. <dde...@es...>]

Daniel J Sebald <dan...@ie...> writes:

> Last night I started a script "allinf.dem" consisting of
>
> load "all.dem"
> load "allinf.dem"
>
> run with the system command line:
>
> gnuplot allinf.dem < /dev/null
>


load makes a recursive call into the command parser. So you have set
up an infinite recursion.

If you attached a debugger, you'd probably see a very deep call stack.

Yeah - if I have

$ cat /tmp/pause 
pause 1 "hello"

$ cat /tmp/recurse
load "/tmp/pause"
load "/tmp/recurse"

Then I run it for a while, and then

(gdb) where
#0  0xdfb7a923 in _libc_sigsuspend ()
#1  0xdfb939f0 in _libc_usleep ()
#2  0xdfbca8ad in usleep ()
#3  0x80515fb in pause_command () at command.c:997
#4  0x8050831 in command () at command.c:511
#5  0x8050409 in do_line () at command.c:368
#6  0x8079032 in load_file (fp=0x811d010, name=0x8122f30 "/tmp/pause", can_do_args=0 '\000') at misc.c:267
#7  0x805143b in load_command () at command.c:871
#8  0x8050831 in command () at command.c:511
#9  0x8050409 in do_line () at command.c:368
#10 0x8079032 in load_file (fp=0x811d000, name=0x8122f18 "/tmp/recurse", can_do_args=0 '\000') at misc.c:267
#11 0x805143b in load_command () at command.c:871

[snip]

#164 0x8050831 in command () at command.c:511
#165 0x8050409 in do_line () at command.c:368
#166 0x8079032 in load_file (fp=0x811cd90, name=0x8122b70 "/tmp/recurse", can_do_args=0 '\000') at misc.c:267
#167 0x805143b in load_command () at command.c:871
#168 0x8050831 in command () at command.c:511
#169 0x8050409 in do_line () at command.c:368
#170 0x8079032 in load_file (fp=0x811cd80, name=0x804714b "/tmp/recurse", can_do_args=0 '\000') at misc.c:267
#171 0x807fe59 in main (argc=1, argv=0x8046f98) at plot.c:622



Problem goes away if you spell it

$ cat /tmp/recurse 
load '/tmp/pause'
reread


dd
-- 
Dave Denholm              <dde...@es...>       http://www.esmertec.com