In the current sources, I see:
for (lineoff = FirstOffsetNumber; lineoff <= max; lineoff++)
so it looks like we have this fixed. You can check the 7.1RC1.
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> It crashes when pg_database is too large. This is because
> the index is compare to max with <= instead of <. I already
> fixed the bug on my system. That's at line
>
>
>
> Please describe a way to repeat the problem. Please try to provide a
> concise reproducible example, if at all possible:
> ----------------------------------------------------------------------
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> Create many database (or create/destroy the same many times).
>
> Once the pg_database is more than one page (is 16Kb or more) then it
> starts
> crashing. (may not crash on all systems, but trust me, my fix
> will work GREAT).
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> Okay, so go in the following file:
>
> ./src/backend/utils/misc/database.c
>
> and move to the line #183 (V7.0.1)
>
> There, fix the for() as is:
>
> for(i = 0; i < max; i++)
>
> Why? Well, because 'i' starts at 0, therefore, you
> can't access the tuple number 'max'. If you look in
> other source files, you will quickly see that all
> these for() loops are starting with an index of
> 1 and use some special functions/macros to access
> the tuple data.
>
>
>
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