Uninitialized variable: x.

Unused variable: i.

Array 'a[10]' accessed at index 10, which is out of bounds.

Array 'data[2]' accessed at index 10, which is out of bounds.

Null pointer dereference: p.

Variable 'ptr' is allocated memory that is never used.

Undefined behaviour, when 'i' is 123 the pointer arithmetic 'x-i' is out of bounds.

Either the condition '!abc' is redundant or there is possible null pointer dereference: abc.

Possible null pointer dereference: p.

Array index 'i' is used before limits check.