Re: GCC 7.3.0 -std=gnu++17 failed to getline() from std::ifstream

[Ross Smith <ross dot smith at otoy dot com>]

On 2018-06-12 02:17, Marco Atzeri wrote:
> On 6/11/2018 4:11 AM, Ross Smith wrote:
> > On 2018-06-06 09:00, Marco Atzeri wrote:
> > > On 6/5/2018 10:32 PM, Ivan Shynkarenka wrote:
> > > >   Hello
> > > >
> > > > I use x64 bit Cygwin and it failed in my home, work and Appveyor.  I 
> > > > add
> > > > cygcheck.out with my environment.
> > > >
> > > > I'm sorry about misspell prefix space in my prev example. Please try 
> > > > the
> > > > following one:
> > > >
> > > > #include <fstream>
> > > > #include <iostream>
> > > >
> > > > int main(int argc, char** argv)
> > > > {
> > > >      std::string line;
> > > >      std::ifstream stream("test.cpp");
> > > >      while (getline(stream, line))
> > > >          std::cout << line << std::endl;
> > > >      return 0;
> > > > }
> > > >
> > > > g++ -std=gnu++17 test.cpp
> > >
> > > works fine on 32 bit and 64 bit on my W7
> >
> > I'm having the same problem. My test program:
> >
> > #include <fstream>
> > #include <iostream>
> > int main() {
> >      std::ifstream in("demo.cpp");
>
>
> with this change does not segfault
>
>    std::ifstream stream("demo.cpp\n");

It doesn't segfault because it doesn't open the file, because no file
named "demo.cpp\n" exists. I don't know WTF you thought you were doing
here.

Ross Smith

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple