CODEWITHSUNDEEP
c++ostreamfcntl
Logan Ratner
Logan Ratner

Reputation: 1

Is it safe to mix IO styles on a file with Posix file control (fcntl) and std::filebuf in C++?

I'm trying to chase down an intermittent SEG FAULT on an ostream insert and I've come across code that looks something like this:

#include <fcntl.h>
 ...
std::filebuf logBuf;
std::ostream fout;

int logFD = open(myfile, O_RDWR|O_CREAT|O_TRUNC|O_APPEND, S_IRUSR|S_IWUSR);
logBuf.open(myFile, ios::out|ios::app);
fout.rdbuf(&logBuf);

This doesn't feel right, but I can't find anything that says whether it is safe to mix IO styles on a file like this.

Does this need a rewrite or am I barking up the wrong tree?

Upvotes: 0

Views: 33

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