public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "elizbus at yahoo dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/40732] New: fstream get/put pointers have unexpected positions Date: Mon, 13 Jul 2009 14:23:00 -0000 [thread overview] Message-ID: <bug-40732-17936@http.gcc.gnu.org/bugzilla/> (raw) My understanding is that with fstream, get and put pointers move together. Therefore expect output of following to be aabbc1234, output is actually aabbc. This had expected result with 3.3.1, unexpected result with 3.4.4. #include <fstream> using namespace std; int main(int argc, char* argv[]) { fstream myStream; myStream.open("myTestFile.out", ios_base::in | ios_base::out | ios::trunc); // write "aabbc" to file myStream.put('a'); myStream.put('a'); myStream << "b"; myStream << "b"; myStream << "c"; //rewind myStream.seekg(0); char c; //skip over data for (int i=0; i < 5; i++) { myStream.get(c); } // append 1234 to file myStream << "1234\n"; myStream.close(); return 0; } Configured with: ./configure --prefix=/usr/local/gcc-3.4.4 Thread model: posix gcc version 3.4.4 -- Summary: fstream get/put pointers have unexpected positions Product: gcc Version: 3.4.4 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: elizbus at yahoo dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40732
next reply other threads:[~2009-07-13 14:23 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2009-07-13 14:23 elizbus at yahoo dot com [this message] 2009-07-13 14:34 ` [Bug libstdc++/40732] " paolo dot carlini at oracle dot com 2009-07-13 17:24 ` elizbus at yahoo dot com 2009-07-13 19:59 ` paolo dot carlini at oracle dot com
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=bug-40732-17936@http.gcc.gnu.org/bugzilla/ \ --to=gcc-bugzilla@gcc.gnu.org \ --cc=gcc-bugs@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).