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Do not pass null for free, memcpy and memmove

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* lib/jit_memory.c: Do not call free on NULL pointers.

	* include/lightning/jit_private.h, lib/jit_note.c,
	lib/lightning.c: Add a wrapper to memcpy and memmove
	to not actually call those functions with a zero size
	argument, and likely also a null src or dst.
This commit is contained in:
pcpa 2014-07-29 10:29:49 -03:00
parent a8c180a926
commit 0d9ac79a12
6 changed files with 52 additions and 19 deletions
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22
lib/jit_memory.c
View file

@ -38,6 +38,22 @@ static jit_free_func_ptr jit_free_ptr = jit_default_free_func;
/*
* Implementation
*/
jit_pointer_t
jit_memcpy(jit_pointer_t dst, jit_pointer_t src, jit_word_t size)
{
if (size)
return (memcpy(dst, src, size));
return (dst);
}
jit_pointer_t
jit_memmove(jit_pointer_t dst, jit_pointer_t src , jit_word_t size)
{
if (size)
return (memmove(dst, src, size));
return (dst);
}
void
jit_set_memory_functions(jit_alloc_func_ptr alloc_ptr,
jit_realloc_func_ptr realloc_ptr,
@ -82,8 +98,10 @@ jit_realloc(jit_pointer_t *ptr, jit_word_t old_size, jit_word_t new_size)
void
jit_free(jit_pointer_t *ptr)
{
(*jit_free_ptr)(*ptr);
*ptr = NULL;
if (*ptr) {
(*jit_free_ptr)(*ptr);
*ptr = NULL;
}
}
static void *