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file descriptor to ofstream
- From: Stephen Biggs <xyzzy at hotpop dot com>
- To: GCC-Help list <gcc-help at gcc dot gnu dot org>
- Date: 18 Jun 2003 13:04:50 +0300
- Subject: file descriptor to ofstream
Linux RedHat 8.0, all updated to the latest.
$ g++ -v
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.2/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--disable-checking --host=i386-redhat-linux --with-system-zlib
--enable-__cxa_atexit
Thread model: posix
gcc version 3.2 20020903 (Red Hat Linux 8.0 3.2-7)
given the code:
#include <fstream>
...
int fd = open("junk",O_CREAT | O_EXCL);
ofstream f(fd);
How do I do the above operation?
This gives a compile error on G++ 3.2, since the ofstream constructor in
/usr/include/c++/3.2/fstream is not overloaded to take an integer file
descriptor, but the constructor defined in /usr/include/g++-3/fstream
does do this.
Are the include files in g++-3 deprecated? Those files are not being
included, instead the ones in c++/3.2 are which are much less in
content. How do I change a vanilla installation to include the g++-3
files, if, in fact, that is what I should do?