Hi,
I am using Swig to create a wrapper between C and Perl communication. It
generates run time error when I try to access file pointer in C opened in
Perl. The message shown at run time is
"The instruction at "0x77f88216" referenced memory at "0x00000000". The
memory could not be written".
Below are the corresponding files I am using to attain communication:
1. Interface file cprog.i used in swig to create a wrapper file
%module cprog
%typemap(perl5,in) FILE * {
$target = IoIFP(sv_2io($source));\
}
int testing(FILE* fp);
Swig command I use to create wrapper cprog_wrap.c is
swig -perl -exportall cprog.i
2. C file "cprog.c" to communicate with perl
#include <stdio.h>
int testing(FILE* fp)
{
if(fp)
fputs("hello", fp);
else
return 0;
}
3. Perl file "perl1.pl" I use to communicate with C
file "cprog.c"
use cprog;
open(OUT, ">-");
$ret = testing(*OUT);
print $ret;
Following gives the compilling and linking I use to create the dll
"cprog.dll"
cl.exe -I "c:\Program Files\Microsoft Visual Studio .NET\Vc7\include"
-Ic:\Perl\lib\CORE -I "c:\Program Files\Microsoft Visual Studio
NET\Vc7\PlatformSDK\Include" -c cprog.c cprog_wrap.c -nologo -Gf -W3 -MD
-Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT
-DNO_HASH_SEED -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO
-DPERL_MSVCRT_READFIX
link.exe -dll -nologo -nodefaultlib -opt:ref,icf
-libpath:"C:\Perl\lib\CORE" -machine:x86 /out:cprog.dll cprog.obj
cprog_wrap.obj perl58.lib /LIBPATH:"c:\Program Files\Microsoft Visual
Studio .NET\Vc7\lib" msvcrt.lib kernel32.lib
Actual run time problem occurs when I try to use "fputs()" in C using file
pointer created in Perl.
Can anyone explain me soon wht's the problem and how should i rectify it?
Regards,
Karthik.
