RE: Problem with SizeConstraints in AsnOcts class

I couldn’t reproduce this problem right off the bat, but if you could provide a little more info that would be great.

For instance, what parameters are you passing to the esnacc executable when you compile the ASN.1 module? Also, if you were to re-define the ASN.1 definition without a size (rather than commenting out the SizeConstraint function), will it still give an error during your build?

Regards,

Dave Abarbanel

BAE Systems

From: owner-imc-snacc@xxxxxxxxxxxx [mailto:owner-imc-snacc@xxxxxxxxxxxx] On Behalf Of Andrés Fuentes
Sent: Monday, February 26, 2007 11:00 AM
To: imc-snacc@xxxxxxx
Subject: Problem with SizeConstraints in AsnOcts class

Please help me; I have a .asn1 file with the following types:

McMsisdn ::= OCTET STRING (SIZE(3..20));

I’m using eSNACC 1.7 with patch 1.7.4 with Red Hat Enterprise Linux 4, g++ (GCC) 3.4.3 20041212 (Red Hat 3.4.3-9.EL4).

I ran esnacc to obtain the .h and .cpp files. In another file I wrote my application with the following calls:

char myBuffer[] = {0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x31,0x32,0x33,0x34,0x35};

size_t sizeBuffer = sizeof(myBuffer);

McMsisdn myMcMsisdn(myBuffer,sizeBuffer);

When I compile it produces an error:

/tmp/ccxwGq5g.o(.gnu.linkonce.t._ZN5SNACC8McMsisdnD1Ev+0xb): In function `SNACC::McMsisdn::~McMsisdn()':

: undefined reference to `vtable for SNACC::McMsisdn'

/tmp/ccxwGq5g.o(.gnu.linkonce.t._ZN5SNACC8McMsisdnC1EPKcj+0x1f): In function `SNACC::McMsisdn::McMsisdn(char const*, unsigned int)':

: undefined reference to `vtable for SNACC::McMsisdn'

collect2: ld returned 1 exit status

I read a lot and tried to find the solution myself but in the gcc documentation explain about virtual functions, etc. etc. I think that is not the problem, I am not sure.

The declaration of my class generated by esnacc is the following

/* OCTET STRING SIZE 3..20 */

class McMsisdn: public AsnOcts {

public:

McMsisdn ():AsnOcts() { }

McMsisdn (const char *str):AsnOcts(str) { }

McMsisdn (const char *str, const size_t len):AsnOcts(str, len) { }

McMsisdn (const McMsisdn &o):AsnOcts(o){ }

const SizeConstraint* SizeConstraints(int &sizeList)const;

McMsisdn &operator = (const AsnOcts &o)

{ SetEqual(o); return *this;}

McMsisdn &operator = (const char *str)

{ SetEqual(str); return *this; }

};

When I comment the function “const SizeConstraint* SizeConstraints(int &sizeList)const;” my application compile fine, but I think that It is necessary to handle the maximum an minimum size of the types.

I don’t understand why this error. I need your help, please.

Andrés Fuentes