GitLab

Bugzilla Link	564
Created on	Sep 23, 2009 15:15
Resolution	FIXED
Resolved on	Dec 11, 2009 17:35
Version	1.00beta
OS	Linux
Architecture	PC

Extended Description

Compiler version:
sac2c v1.00-beta (Buchette d'Anjou)
 product rev 16226 linux-gnu_i686
 (Fri Jul 24 15:22:58 BST 2009 by asv)
Summary:
When I use in the body of function construction:
   array = genarray([x, 2, 10], 0);
where `x` is a parameter of the function, I get a very strange runtime when I iterate through the outer dimension of the array.
Example:
use Array: {genarray, modarray, sel };
use StdIO: {printf, print};
int[.,.,.] f(int limit) {
    int[.,.,.] array;
    array = genarray([limit,2,10], 0);
    for (gr = 0; _lt_SxS_(gr, limit); gr = _add_SxS_(gr, 1)) {
        
        maxlen = 7; 
 
        for (i = 2; _lt_SxS_(i, 5); i = _add_SxS_(i, 1)) {
            array[gr, 0, i] = 10;
            array[gr, 1, _add_SxS_(i,1)] = 11;
            printf("i = %i\n", i);
        }
        printf("array[%i, %i, %i] = 13\n", gr, 1, maxlen);
        array[gr, 1, maxlen] = 13;
        printf("array[%i, %i, %i] = %i\n", gr, 1, maxlen, array[gr, 1, maxlen]);
       
        print(array);
    }
    print(array[0,1,3]);
    print(array[1,1,3]);
    return (array);
}
-----------------------------------------------------------------
Execution:
When I call the function with parameter `2`: f(2), I get the following:
i = 2
i = 3
i = 4
array[0, 1, 7] = 13
array[0, 1, 7] = 13
Dimension:  3
Shape    : <  2,  2, 10>
< 0  0 10 10 10  0  0  0  0  0 > < 0  0  0 11 11 11  0 13  0  0 > 
< 0  0  0  0  0  0  0  0  0  0 > < 0  0  0  0  0  0  0  0  0  0 > 
i = 2
i = 3
i = 4
array[1, 1, 7] = 13
array[1, 1, 7] = 13
Dimension:  3
Shape    : <  2,  2, 10>
< 0  0 10 10 10  0  0  0  0  0 > < 0  0  0 11 11 11  0 13  0  0 > 
< 0  0 10  0  0  0  0  0  0  0 > < 0  0  0 11  0  0  0  0  0  0 > 
Dimension:  0
Shape    : < >
 13
Segmentation fault
-----------------------------------------------------------------------
So we can see that array is not updated and access to the valid address
of the array gives us Segmentation fault.
The problem goes away if I'll use static values in genarray, like 
   array = genarray([2,2,10], 0);