Re: Proposal: Make use of C99 designated initialisers fornulls/values arrays

From: Tom Lane <tgl@sss.pgh.pa.us> Sent: Friday, 4 October 2019 2:08 PM

>> #define INIT_ALL_ELEMS_ZERO  {0}
>> #define INIT_ALL_ELEMS_FALSE {false}

>I would say that's 100% wrong.  The entire point here is that it's memset-equivalent, and therefore writes zeroes, regardless of what the datatype is. 

I agree it is memset-equivalent.

All examples of the memset code that INIT_ALL_ELEMS_ZERO replaces looked like this:
memset(values, 0, sizeof(values));

Most examples of the memset code that INIT_ALL_ELEMS_FALSE replaces looked like this:
memset(nulls, false, sizeof(nulls));

~

I made the 2nd macro because I anticipate the same folk that don't like setting 0 to a bool will also not like setting something called INIT_ALL_ELEMS_ZERO to a bool array.

How about I just define them both the same?
#define INIT_ALL_ELEMS_ZERO     {0}
#define INIT_ALL_ELEMS_FALSE    {0}