Re: m68k: main.c:(.init.text+0x730): undefined reference to `strlen'

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Cyrill Gorcunov <gorcunov@xxxxxxxxx> writes:

I think it would help to see ..tmp_vmlinux1.cmd to ensure for inclusion
of lib/lib.a. strlen was there without my patch as Andreas already pointed,
I've just added strncat wich is coming from lib/string.o for this arch.

Actually the way strncat is used here is broken anyway, it does not
prevent array overrun.  The third argument of strncat only limits the
amount of characters copied, without taking into account the length of
the string already in the buffer.  Consequently gcc has optimized the
call to strncat into a simple call to strcat, since none of the copied
strings are longer than sizeof(msgbuf).  This strcat call is then
expanded to include a call to strlen.

So a better fix would probably be to make msgbuf big enough and use
strcat instead.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@xxxxxxx
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."
--
To unsubscribe from this list: send the line "unsubscribe linux-m68k" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Video for Linux]     [Yosemite News]     [Linux S/390]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux