On Mon, 15 Sep 2003, Vijay Kumar wrote:
> Hi all,
>
> I have upgraded to the latest cygwin this morning and
> I can not anymore run my programs that use ifstream to
> read input files. It crashes giving segmentation
> fault. When I ran strace, I found that the actually
> fails in mmap.cc complaining STATUS_ACCESS_VIOLATION.
>
> Here's the simple code I ran. Anybody have any clues?
> Interestingly the following programs works fine with
> -mno-cygwin option which unfortunaty I can not use for
> my application.
>
> # include <iostream>
> # include <fstream>
>
> int main(int argc, char *argv[])
> {
> char ch;
>
> if (argc < 2)
> {
> cout << "Usage: a.out file_name" << endl;
> }
>
> ifstream is(argv[1], ios::in);
>
> while (! is.eof())
> {
> is.get(ch);
> cout << ch;
> }
> is.close();
>
> return 0;
> }
>
> Thanks,
> - Vijay
Vijay,
Please (re)read <http://cygwin.com/problems.html>, especially the part
about attaching (as an uncompressed text *attachment*) the output of
"cygcheck -svr". FYI, you must be using the earlier version of g++ as
well, since g++ 3.2 complains on compiling your program (you need to
insert "using namespace std;" before main() for it to compile).
FWIW, your program works just fine on Cygwin 1.5.3-1 (as a datapoint). I
didn't install 1.5.4 yet, so can't try reproducing it there.
Igor
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