memory leak in the code?

[George2]

Hello everyone,


Should I delete memory pointed by pointer a if there is bad_alloc when allocating memory in memory pointed by pointer b? I am not sure whether there will be memory leak if I do not delete a.

try {
    a = new int [N];
    b = new int [M];
} catch (bad_alloc)
{
    // if a success, but b fail, should we try to delete[] a here to avoid memory leak?
 
}
 

thanks in advance,
George

[weaknessforcats]

George2:
You have already asked this question and I have answered it.

[George2]

Sorry weaknessforcats, where do you answer it? Could you provide an URL please?

George2:
You have already asked this question and I have answered it.

regards,
George

[weaknessforcats]

You can't tell if a was allocated. Therefore, you can't delete.

Do not put multiple allocations in the same try block.

[George2]

Thanks weaknessforcats,


You mean I can put each separate allocation in each separate try block?

You can't tell if a was allocated. Therefore, you can't delete.

Do not put multiple allocations in the same try block.

regards,
George

[weaknessforcats]

Either that or ensure that a and b are zero. Then if a allocates and b throws, you can delete both a and b since delete a null pointer is OK.

[George2]

Thanks weaknessforcats,


My question is answered.

Either that or ensure that a and b are zero. Then if a allocates and b throws, you can delete both a and b since delete a null pointer is OK.

regards,
George