Re^2: Need to pass an unsigned char array from an xsub back to Perl

Thank you so much for the quick reply. Indeed, your solution is very elegant. I am a newbie in xsubb. I did use the second method.

 PREINIT:
        unsigned char uuid_arr[16];
    CODE:
        char convert_arr[33];
        int i;
        XGenerateSessionID((uuid_t*) &uuid_arr);
        memset(convert_arr,'\0',33);
        for(i=0; i< 16; i++){
         snprintf(&convert_arr[i*2], sizeof(convert_arr)-(i*2), "%02X"
+, uuid_arr[i]);
        }
        RETVAL = newSVpvn(convert_arr,33);
    OUTPUT:    
         RETVAL
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If I had not converted the unsigned char back to char, the compiler complains of signedness.

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