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Date: Fri, 8 Jun 2012 00:51:48 +0800
From: orc <orc@...server.ru>
To: musl@...ts.openwall.com
Cc: Rich Felker <dalias@...ifal.cx>
Subject: bug? sysinfo() and getopt_long() misbehavior
I have built a musl-enabled system and encountered some bugs:
- sysinfo() incorrectly works. The result is busybox' free misbehaving:
% ./busybox free -m
total used free shared buffers
Mem: 476 476 0 183 10489
-/+ buffers: 17592186034402 10489
Swap: 10135 10135 0
gdb shows garbage in struct after free calls sysinfo() with musl.
Reproducible with:
% cat procs.c
#include <stdio.h>
#include <sys/sysinfo.h>
int main(void)
{
struct sysinfo info;
if(sysinfo(&info) == 0)
printf("procs: %d\n", info.procs);
return 0;
}
% gcc procs.c # glibc
% ./a.out
procs: 120
% musl-gcc procs.c # musl
% ./a.out
procs: -149225472
- (did not investigated properly) possible getopt_long() misbehavior, or
just miscompile. The result is that iptables and gnu sed misbehaving
at command line arguments:
% sed -i '/test/d' ttnosuchfile
sed: can't find label for jump to `tnosuchfile'
% sed '/test/d' -i ttnosuchfile
sed: can't read -i: No such file or directory
sed: can't read ttnosuchfile: No such file or directory
# iptables -vnL
iptables v1.4.12.1: unknown arguments found on commandline
Try `iptables -h' or 'iptables --help' for more information.
# iptables --version
iptables v1.4.12.1: unknown arguments found on commandline
Try `iptables -h' or 'iptables --help' for more information.
Both sed and iptables were compiled with -D_GNU_SOURCE defined.
Unfortunately I don't actually know how to fix these two.
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