Invalid Deallocation

Occurs when an application calls a deallocation function with an address that does not correspond to dynamically allocated memory.

Problem type: Invalid deallocation


Code location



Invalid deallocation site

Represents the location from which the invalid call to a deallocation function was made.

C Examples/Windows* OS

int x = 1;
int *p = &x;
VirtualFree(p, 1, MEM_DECOMMIT);

void *p = VirtualAlloc(NULL,1,MEM_COMMIT,PAGE_READWRITE);

C Example/Linux* OS

void *p = mmap(NULL, 8, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
munmap(p, 8);
munmap(p, 8);

Possible Correction Strategies


Do This

This code location should free memory.

Change the code to pass in dynamically allocated memory.

This code location does not need to free memory.

Remove the call to the deallocation function.

For more complete information about compiler optimizations, see our Optimization Notice.