>Number: 387
>Category: os-linux
>Synopsis: redefinition of struct in compile - redef takes place in
>buff.c - post include of sys/uio.h
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: apache (Apache HTTP Project)
>State: open
>Class: sw-bug
>Submitter-Id: apache
>Arrival-Date: Mon Apr 14 06:20:02 1997
>Originator: [EMAIL PROTECTED]
>Organization:
apache
>Release: 1.2b8
>Environment:
Linux 2.0.27, patchlevel(?) - gcc compiler
>Description:
contents of /usr/include/sys/uio.h included by buff.c follows:
---- begin ----
dusty:/usr/include/sys# cat uio.h
/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
This file is part of the GNU C Library. ....... etc. */
#ifndef _SYS_UIO_H
#define _SYS_UIO_H 1
#include <features.h>
__BEGIN_DECLS
#define __need_size_t
#include <stddef.h>
/* Structure describing a section of memory. */
struct iovec
{
/* Starting address. */
__ptr_t iov_base;
/* Length in bytes. */
size_t iov_len;
};
/* Read data from file descriptor FD, and put the result in the
buffers described by VECTOR, which is a vector of COUNT `struct iovec's.
The buffers are filled in the order specified.
Operates just like `read' (see <unistd.h>) except that data are
put in VECTOR instead of a contiguous buffer. */
int readv __P ((int __fd, __const struct iovec * __vector, size_t __count));
/* Write data pointed by the buffers described by VECTOR, which
is a vector of COUNT `struct iovec's, to file descriptor FD.
The data is written in the order specified.
Operates just like `write' (see <unistd.h>) except that the data
are taken from VECTOR instead of a contiguous buffer. */
int writev __P ((int __fd, __const struct iovec * __vector, size_t __count));
__END_DECLS
#endif /* sys/uio.h */
----- end ----
Since compile error was:
--- begin ---
[snip]
gcc -c -Iregex -O2 -DLINUX -DSTATUS buff.c
In file included from buff.c:66:
/usr/include/sys/uio.h:33: redefinition of `struct iovec'
make: *** [buff.o] Error 1
--- end ---
I rem'd the include at line 66 of buff.c - as per:
#ifndef NO_WRITEV
#include <sys/types.h>
/*
#include <sys/uio.h>
*/
#endif
since struct iovec is defined at line 644 of buff.c
I'm not competent at C, but it looked like a possibility to me, the
compile then ran ok to end, and httpd 'appeared' to work... however
I did not leave it in service since I was not sure of the consequences.
>How-To-Repeat:
easy to repeat using code of 1.2b8 and uio.h given above
>Fix:
suspect that /usr/include/sys/uio.h may be obsolete code..%3
>Audit-Trail:
>Unformatted:
