hi all

      when i use c++ pragrm to insert some data into a table,the program crashes,the message is below:

 

so i use gdb to debug the bug,  i find that these places may be bugs£º

1. out of bounds access

file mapi.c

function: mapi_param_store

 

2356  strncpy(hdl->query + k, p, q - p);
2357   k += q - p;
2358   hdl->query[k] = 0;

 

q-p is equal or bigger than lim - k ,the strncpy will hava a out of bounds access. this may be the reason to crash.

 

2. out of bounds access

file:mapi.c

function: mapi_param_store

 

2411   case MAPI_DOUBLE:
 2412   checkSpace(20);
 2413   sprintf(hdl->query + k, "%.17g", *(double *) src);
 2414   break;

 

sprintf(hdl->query + k, "%.17g", *(double *) src) , sprintf function with "%.17g" format may produces a string longer than 20,eg£º

 

double d = 0.000200000000000001;

    double d = 0.000200000000000001;
    printf("%.17g",d);

the result is :   0.00020000000000000101

so i think, in some paticular condition ,this  will hava a out of bounds access too.