[Bug 1891] New: MIPS: errno variable bugged in ntpl branch
bugzilla at busybox.net
bugzilla at busybox.net
Tue Jun 1 19:20:05 UTC 2010
https://bugs.busybox.net/show_bug.cgi?id=1891
Summary: MIPS: errno variable bugged in ntpl branch
Product: uClibc
Version: unspecified
Platform: Other
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P5
Component: Other
AssignedTo: unassigned at uclibc.org
ReportedBy: hb at travelping.com
CC: uclibc-cvs at uclibc.org
Estimated Hours: 0.0
I'm developing software for an embedded mips based platform using uClibc
ntpl-svn 00891d9cf07efd992023f255164bba93d657ece4 compiled with gcc-4.4.3
(although gcc versions doesn't seem to matter). Reading the debug output of the
pppd i found some nonsense error messages. Adding some extra lines to the code,
i noticed errno was always holding the value of the requested filedescriptor
using normal read/write operations. In order to isolate the bug i wrote the
following testframe:
int main(int argh, char **argv){
unsigned char buf[32];
int ter, sz;
while (1) {
puts("trying to read from non existing descriptor.");
sz = read(666, buf, 16);
ter = errno;
puts("done.");
if (sz < 0) {
puts("read failed.");
printf("errno holds a value of %d.\n", ter);
} else
puts("erg... read succeded?");
puts("---");
}
return 0;
}
It showed up that errno really was set to 666 instead of EBADF (Bad file
descriptor).
I already added the patch labeled 'MIPS: restore INLINE_SYSCALL macro' hoping
this would fix the issue, but it didn't. I have been digging through the change
logs and I think this hasn't been fixed yet.
--
Configure bugmail: https://bugs.busybox.net/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
More information about the uClibc-cvs
mailing list