gcc simple program crashing

gcc simple program crashing

[Gerry Reno]

  I wrote, compiled and ran a very simple program today that is
producing the weirdest results.  I began googling the errors and came
across multiple accounts of people experiencing the exact same
behavior. The program is just a simple dos/unix line termination
converter:

#include <stdio.h>

int main (int argc, char *argv[])
{
  int ch;
  while ( (ch = getc(stdin)) && ! feof(stdin) ) {
    if (ch == '\n') {
      putc('\n',stdout);
      putc('\r',stdout);
    } else putc(ch,stdout);
  }
}

gcc -o filter.exe -c filter.c

The errors:
./filter.exe 8: Syntax error: EOF in backquote substitution

and sometimes:
----------------------------------------------
16-bit MS-DOS Subsystem
----------------------------------------------
~/dev
The NTVDM has encountered an illegal instruction.
CS:0000 IP:0077 OP:f0 37 05 0e 02 Choose 'Close' to terminate the
application.
----------------------------------------------

Also, when I run the program from a DOS box the cursor starts jumping
all over the screen and you have to kill the DOS box to stop it.

I've tried this under Cygwin and MinGW with same result.

I'm using gcc 3.2 series in both cases:

gcc --version
gcc.exe (GCC) 3.2.3 (mingw special 20030504-1)

gcc --version
gcc (GCC) 3.2 20020927 (prerelease)

  Anyone know what is causing this behavior?  Another poster with this
problem was using g++ (GCC) 3.1.1 20020718 (prerelease):
http://www.cygwin.com/ml/cygwin/2002-07/msg01598.html


thx,
Gerry Reno


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Re: gcc simple program crashing

[Hartmut Welpmann]

On Sun, 7 Sep 2003 01:00:17 -0700 (PDT), you wrote:

>  I wrote, compiled and ran a very simple program today that is
>producing the weirdest results.  I began googling the errors and came
>across multiple accounts of people experiencing the exact same
>behavior. The program is just a simple dos/unix line termination
>converter:
>
>#include <stdio.h>
>
>int main (int argc, char *argv[])
>{
>  int ch;
>  while ( (ch = getc(stdin)) && ! feof(stdin) ) {
>    if (ch == '\n') {
>      putc('\n',stdout);
>      putc('\r',stdout);
>    } else putc(ch,stdout);
>  }
>}
>
>gcc -o filter.exe -c filter.c
>
>The errors:
>./filter.exe 8: Syntax error: EOF in backquote substitution

[...]

>Anyone know what is causing this behavior?  

You try to execute an object file, just remove the -c switch.

>Another poster with this
>problem was using g++ (GCC) 3.1.1 20020718 (prerelease):
>http://www.cygwin.com/ml/cygwin/2002-07/msg01598.html

If you had read the whole thread, you might have found the answer
yourself...

Regards,
Hartmut

-- 
Hartmut Welpmann

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Re: gcc simple program crashing

[Gerry Reno]

Hartmut,
  Yes, thanks.  This is what I get for working too late :-)

rgds,
Gerry Reno

  
--- Hartmut Welpmann <hartmut.welpmann@gmx.de> wrote:
> On Sun, 7 Sep 2003 01:00:17 -0700 (PDT), you wrote:
> 
> >  I wrote, compiled and ran a very simple program today that is
> >producing the weirdest results.  I began googling the errors and
> came
> >across multiple accounts of people experiencing the exact same
> >behavior. The program is just a simple dos/unix line termination
> >converter:
> >
> >#include <stdio.h>
> >
> >int main (int argc, char *argv[])
> >{
> >  int ch;
> >  while ( (ch = getc(stdin)) && ! feof(stdin) ) {
> >    if (ch == '\n') {
> >      putc('\n',stdout);
> >      putc('\r',stdout);
> >    } else putc(ch,stdout);
> >  }
> >}
> >
> >gcc -o filter.exe -c filter.c
> >
> >The errors:
> >./filter.exe 8: Syntax error: EOF in backquote substitution
> 
> [...]
> 
> >Anyone know what is causing this behavior?  
> 
> You try to execute an object file, just remove the -c switch.
> 
> >Another poster with this
> >problem was using g++ (GCC) 3.1.1 20020718 (prerelease):
> >http://www.cygwin.com/ml/cygwin/2002-07/msg01598.html
> 
> If you had read the whole thread, you might have found the answer
> yourself...
> 
> Regards,
> Hartmut
> 
> -- 
> Hartmut Welpmann


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