Thread: Nesting functions which take same pointer as arguments

Please open the file code.c in a suitable text editor (like notepad++, to help keep track of the line numbers)

Line 738: Let us consider the variable R (5th argument in the function MP_modKalMontInv() ). R is passed by reference so the function MP_modKalMontInv() should get an address to R

Line 565: Inside the function MP_modKalMontInv(), R is further passed into the function MP_monmul_SandK_ver() which is also declared to take address of R (function definition at Line 293)

Line 310: The address of R is further passed into show_mp_int_fullinfo() but the program now crashes at Line 14 (line 14 is not executed). Why should that happen and what can I do to correct it?

This program uses the LibTomMath library. R is of type mp_int, which is a structure declared in the LibTomMath library as

Code:

typedef struct {
   int used, alloc, sign;
   mp digit *dp;
} mp int;

At the menu screen enter 9
Then enter the following values sequentially when asked
1
3333333333
1
3333333333
then press any keys except q at the getch()'s and when the program flow reaches the line described above the program crashes
I have recreated a similar scenario in the file code.c, however that one doesn't crash.

Could anyone please give me some idea about this?
Thank you very much.

PS: I am using Codeblocks 8.02 with gcc version 3.4.5 (mingw-vista special)