blob: 8e0191a57aaf1fc59fa3861048cc96723b752d3c [file] [log] [blame]
.. title:: clang-tidy - bugprone-misplaced-pointer-arithmetic-in-alloc
Finds cases where an integer expression is added to or subtracted from the
result of a memory allocation function (``malloc()``, ``calloc()``,
``realloc()``, ``alloca()``) instead of its argument. The check detects error
cases even if one of these functions is called by a constant function pointer.
Example code:
.. code-block:: c
void bad_malloc(int n) {
char *p = (char*) malloc(n) + 10;
The suggested fix is to add the integer expression to the argument of
``malloc`` and not to its result. In the example above the fix would be
.. code-block:: c
char *p = (char*) malloc(n + 10);