| /* =16 MiB. Needs to be at least 0x3FF00, i.e. the default ~4MB block size used | |
| * in compressed SPSS (ZSAV) files. Some SAS installations use 16MiB page sizes | |
| * by default, see https://github.com/tidyverse/haven/issues/697. | |
| * The purpose here is to prevent massive allocations in the event of a | |
| * malformed file or a bug in the library. */ | |
| void *readstat_malloc(size_t len) { | |
| if (len > MAX_MALLOC_SIZE || len == 0) { | |
| return NULL; | |
| } | |
| return malloc(len); | |
| } | |
| void *readstat_calloc(size_t count, size_t size) { | |
| if (count > MAX_MALLOC_SIZE || size > MAX_MALLOC_SIZE || count * size > MAX_MALLOC_SIZE) { | |
| return NULL; | |
| } | |
| if (count == 0 || size == 0) { | |
| return NULL; | |
| } | |
| return calloc(count, size); | |
| } | |
| void *readstat_realloc(void *ptr, size_t len) { | |
| if (len > MAX_MALLOC_SIZE || len == 0) { | |
| if (ptr) | |
| free(ptr); | |
| return NULL; | |
| } | |
| return realloc(ptr, len); | |
| } | |