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* [Bug libstdc++/44441] New: std::getline set failbit in situation when shouldn't @ 2010-06-07 11:07 qwak82 at gmail dot com 2010-06-07 11:20 ` [Bug libstdc++/44441] " schwab at linux-m68k dot org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: qwak82 at gmail dot com @ 2010-06-07 11:07 UTC (permalink / raw) To: gcc-bugs In this code s failbit is set if last line in s is empty (stream ends with \n\n): std::istream s; //s is some kind of input stream like std::istringstream s("\n\n"); while (s.good()) { std::string line; std::getline(s, line); } -- Summary: std::getline set failbit in situation when shouldn't Product: gcc Version: 4.4.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: qwak82 at gmail dot com GCC host triplet: ubuntu linux x86-64 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44441 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libstdc++/44441] std::getline set failbit in situation when shouldn't 2010-06-07 11:07 [Bug libstdc++/44441] New: std::getline set failbit in situation when shouldn't qwak82 at gmail dot com @ 2010-06-07 11:20 ` schwab at linux-m68k dot org 2010-06-07 11:36 ` qwak82 at gmail dot com 2010-06-07 11:56 ` redi at gcc dot gnu dot org 2 siblings, 0 replies; 4+ messages in thread From: schwab at linux-m68k dot org @ 2010-06-07 11:20 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from schwab at linux-m68k dot org 2010-06-07 11:19 ------- You are getting eof. -- schwab at linux-m68k dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |INVALID http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44441 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libstdc++/44441] std::getline set failbit in situation when shouldn't 2010-06-07 11:07 [Bug libstdc++/44441] New: std::getline set failbit in situation when shouldn't qwak82 at gmail dot com 2010-06-07 11:20 ` [Bug libstdc++/44441] " schwab at linux-m68k dot org @ 2010-06-07 11:36 ` qwak82 at gmail dot com 2010-06-07 11:56 ` redi at gcc dot gnu dot org 2 siblings, 0 replies; 4+ messages in thread From: qwak82 at gmail dot com @ 2010-06-07 11:36 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from qwak82 at gmail dot com 2010-06-07 11:36 ------- But also fail bit, this program prints: line: a //this is OK, first line line: //this is also OK, second (empty) line fail bit //eof is set - OK; but fail bit should be set here? #include <iostream> #include <sstream> int main() { std::istringstream s("a\n"); while (s.good()) { std::string line; std::getline(s, line); std::cout << "line: " << line << std::endl; } if (s.fail()) std::cout << "fail bit"; return 0; } -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44441 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libstdc++/44441] std::getline set failbit in situation when shouldn't 2010-06-07 11:07 [Bug libstdc++/44441] New: std::getline set failbit in situation when shouldn't qwak82 at gmail dot com 2010-06-07 11:20 ` [Bug libstdc++/44441] " schwab at linux-m68k dot org 2010-06-07 11:36 ` qwak82 at gmail dot com @ 2010-06-07 11:56 ` redi at gcc dot gnu dot org 2 siblings, 0 replies; 4+ messages in thread From: redi at gcc dot gnu dot org @ 2010-06-07 11:56 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from redi at gcc dot gnu dot org 2010-06-07 11:56 ------- [lib.string.io] paragraph 8 If the function extracts no characters, it calls is.setstate(ios_base::failbit) which may throw ios_base::failure (27.4.4.3). -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44441 ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-06-07 11:56 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2010-06-07 11:07 [Bug libstdc++/44441] New: std::getline set failbit in situation when shouldn't qwak82 at gmail dot com 2010-06-07 11:20 ` [Bug libstdc++/44441] " schwab at linux-m68k dot org 2010-06-07 11:36 ` qwak82 at gmail dot com 2010-06-07 11:56 ` redi at gcc dot gnu dot org
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