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Added notes on calloc() being safe to use under certain circumstances if the number of elements or the element size happens to be 0. In effect, malloc() will decide what is going to happen.

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obarthel
2023-09-08 16:04:53 +02:00
parent 7ceeb4f8ed
commit b9463f442b
1 changed files with 6 additions and 2 deletions
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8
library/stdlib_calloc.c
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@ -67,6 +67,9 @@ __calloc(size_t num_elements, size_t element_size, const char * file, int line)
goto out;
}
/* Note: malloc(0) may allocate memory and will also
* initialize its contents to zero.
*/
result = __malloc(total_size, file, line);
if (result == NULL)
{
@ -74,7 +77,8 @@ __calloc(size_t num_elements, size_t element_size, const char * file, int line)
goto out;
}
memset(result, 0, total_size);
if (total_size > 0)
memset(result, 0, total_size);
out:
@ -90,5 +94,5 @@ calloc(size_t num_elements, size_t element_size)
result = __calloc(num_elements, element_size, NULL, 0);
return(result);
return result;
}