Thread: Why we don't panic in PageGetExactFreeSpace
The PageGetExactFreeSpace function contains following code: 00486 space = (int) ((PageHeader) page)->pd_upper - 00487 (int) ((PageHeader) page)->pd_lower; 00488 00489 if (space < 0) 00490 return 0; It seems to me that we should panic that data are overlaped instead of return zero. See PageHeaderIsValid for reference. Any comments? Zdenek -- Zdenek Kotala Sun Microsystems Prague, Czech Republic http://sun.com/postgresql
Zdenek Kotala <Zdenek.Kotala@Sun.COM> writes: > It seems to me that we should panic that data are overlaped instead of return > zero. elog(PANIC) is almost never a good idea, and it certainly isn't a good response here. regards, tom lane
Tom Lane napsal(a): > Zdenek Kotala <Zdenek.Kotala@Sun.COM> writes: >> It seems to me that we should panic that data are overlaped instead of return >> zero. > > elog(PANIC) is almost never a good idea, and it certainly isn't a good > response here. Ok PANIC is too strong, but I guess FATAL should be relevant or is there any situation when lower > upper? The same situation is in PageGetFreeSpace. Zdenek -- Zdenek Kotala Sun Microsystems Prague, Czech Republic http://sun.com/postgresql