Jeff Davis <pgsql@j-davis.com> writes:
> On Thu, 2020-06-04 at 16:35 -0400, Alvaro Herrera wrote:
>> If it is something worth worrying about, let's discuss what's a good
>> fix for it.
> While making a minimal test case for the GCC bug report, I found
> another surprisingly-small workaround. Patch attached.
Ugh :-( ... but perhaps you could get the same result like this:
-#define TapeBlockPayloadSize (BLCKSZ - sizeof(TapeBlockTrailer))
+#define TapeBlockPayloadSize (BLCKSZ - (int) sizeof(TapeBlockTrailer))
Or possibly casting the whole thing to int or unsigned int would be
better. Point being that I bet it's int vs long that is making the
difference.
regards, tom lane