Bug with storing arrays in structs

[0152la]

Assume the following struct definition:

struct S0 {
uchar a;
ulong b[2][3][1];
}

, followed by this initialization:

struct S0 s {
1UL,
{{{1L},{1L},{1L}},{{1L},{1L},{1L}}},
}.

Finally, we iterate through the struct and add the values to a variable:

ulong c = 0UL;
for (i = 0; i < 2; i++)
for (j = 0; i < 3; j++)
for (k = 0; k < 1; k++)
c += s.b[i][j][k];

Reading the result from the variable returns 0x4 in oclgrind, compared to the expected 0x6 as with other platforms.

The types of the members of the struct did not seem to affect this result, but removing the first element makes the bug go away. Also, lower sizes for the dimensions, as well as less than 3 dimensions, did not exhibit the bug.