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a9d7ec4587
Unfortunately we cannot indiscriminately replace xfree() with
XFREE_CLEAR(), because comparing pointers after freeing them is a common
pattern. Example in `tv_list_remove_items()`:
xfree(li);
if (li == item2) {
break;
}
Instead we can do it selectively/explicitly.
ref #1375
55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
#ifndef NVIM_MEMORY_H
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#define NVIM_MEMORY_H
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#include <stdbool.h> // for bool
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#include <stdint.h> // for uint8_t
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#include <stddef.h> // for size_t
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#include <time.h> // for time_t
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/// `malloc()` function signature
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typedef void *(*MemMalloc)(size_t);
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/// `free()` function signature
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typedef void (*MemFree)(void *);
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/// `calloc()` function signature
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typedef void *(*MemCalloc)(size_t, size_t);
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/// `realloc()` function signature
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typedef void *(*MemRealloc)(void *, size_t);
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#ifdef UNIT_TESTING
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/// When unit testing: pointer to the `malloc()` function, may be altered
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extern MemMalloc mem_malloc;
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/// When unit testing: pointer to the `free()` function, may be altered
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extern MemFree mem_free;
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/// When unit testing: pointer to the `calloc()` function, may be altered
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extern MemCalloc mem_calloc;
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/// When unit testing: pointer to the `realloc()` function, may be altered
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extern MemRealloc mem_realloc;
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#endif
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#ifdef EXITFREE
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/// Indicates that free_all_mem function was or is running
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extern bool entered_free_all_mem;
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#endif
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#ifdef INCLUDE_GENERATED_DECLARATIONS
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# include "memory.h.generated.h"
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#endif
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#define XFREE_CLEAR(ptr) \
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do { \
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/* Take the address to avoid double evaluation. #1375 */ \
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void **ptr_ = (void **)&(ptr); \
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xfree(*ptr_); \
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/* coverity[dead-store] */ \
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*ptr_ = NULL; \
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(void)(*ptr_); \
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} while (0)
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#endif // NVIM_MEMORY_H
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