Occurs when a read instruction references a block (2-bytes or more) of memory where part of the block is uninitialized.
ID | Code Location | Description |
|---|---|---|
1 | Allocation site | If present, represents the location and associated call stack from which the memory block containing the offending address was allocated. |
2 | Read | Represents the instruction and associated call stack responsible for the partial uninitialized access. If no allocation or deallocation is associated with this problem, the memory address might be in stack space. NoteThe offset, if shown in the Code Locations pane, represents the byte offset into the allocated buffer where the Uninitialized partial memory access occurred. |
C Example
struct person
{
unsigned char age;
char firstInitial;
char middleInitial;
char lastInitial;
};
struct person *p1, *p2;
p1 = (struct person*) malloc(sizeof(struct person));
p2 = (struct person*) malloc(sizeof(struct person));
p1->firstInitial = 'c';
p1->lastInitial = 'o';
*p2 = *p1; // will result in partial uninitialized readFortran Example
type node
character data1
character data2
end type node
! Variables
type(node) :: a, b
a%data1 = "a"
b = aNote
Buffers created by system calls linking processes to shared memory are flagged as allocated memory, which means the Intel Inspector does not report an Uninitialized partial memory access on these buffers.Parent topic: Problem Type Reference