later, it works fine.after modification, first time, it getting segfaults,Hi, i am sure but it works for me.actually, it little strange, because,
flags in util-linux-2.23 was created automatically.
musl linux system could be set by this method:
https://github.com/pikhq/bootstrap-linux/issues/8
https://github.com/pikhq/bootstrap-linux/issues/9
http://plan9assembler.wordpress.com/2013/04/26/bootstrap-linux-musl-cross/
gcc-4.8
CC = gcc -std=gnu99
CCDEPMODE = depmode=gcc3
CFLAGS = -g -O2
CPP = gcc -ETIAOn Mon, May 27, 2013 at 11:29 PM, Szabolcs Nagy <nsz@port70.net> wrote:* plan9assembler <plan9assembler@gmail.com> [2013-05-27 23:05:37 +0900]:
> util-linux-2.23 mount segfault error seems to be solved.hm are you sure this was the change that solved the segfault?
> no more segfault error, when i test mount binary.
>
> i modified follow macros in musl /include/bits/ioctl.h and musl libc
> reinstalled.
>
> - #define _IOR(a,b,c) _IOC(2,(a),(b),sizeof(c))
> - #define _IOWR(a,b,c) _IOC(3,(a),(b),sizeof(c))
>
> + #define _IOR(a,b,c) _IOC(2U,(a),(b),sizeof(c))
> + #define _IOWR(a,b,c) _IOC(3U,(a),(b),sizeof(c))
>
that would be scary since the linux headers have signed
int left shift overflows in many places
(and as far as i know users of those headers dont use
special compilation flags to make signed overflow
well-defined like gcc -fwrapv)
which compiler did you use and with what flags?
(this could break a lot of legacy code)