cppcoreguidelines-no-malloc¶
This check handles C-Style memory management using malloc()
, realloc()
,
calloc()
and free()
. It warns about its use and tries to suggest the use
of an appropriate RAII object.
Furthermore, it can be configured to check against a user-specified list of functions
that are used for memory management (e.g. posix_memalign()
).
This check implements R.10 from the C++ Core Guidelines.
There is no attempt made to provide fix-it hints, since manual resource management isn’t easily transformed automatically into RAII.
// Warns each of the following lines.
// Containers like std::vector or std::string should be used.
char* some_string = (char*) malloc(sizeof(char) * 20);
char* some_string = (char*) realloc(sizeof(char) * 30);
free(some_string);
int* int_array = (int*) calloc(30, sizeof(int));
// Rather use a smartpointer or stack variable.
struct some_struct* s = (struct some_struct*) malloc(sizeof(struct some_struct));
Options¶
- Allocations¶
Semicolon-separated list of fully qualified names of memory allocation functions. Defaults to
::malloc;::calloc
.
- Deallocations¶
Semicolon-separated list of fully qualified names of memory allocation functions. Defaults to
::free
.
- Reallocations¶
Semicolon-separated list of fully qualified names of memory allocation functions. Defaults to
::realloc
.