On Thu, Apr 14, 2016 at 1:27 AM, Pavel Stehule <pavel.steh...@gmail.com> wrote:
>  (gdb) bt
> #0  heap_deform_tuple (tuple=tuple@entry=0x1d87e90,
> tupleDesc=tupleDesc@entry=0x7f1dab9525b0, values=values@entry=0x1d87a28,
>     isnull=isnull@entry=0x1d882d8 "\177\177\177\177\177~\177\177") at
> heaptuple.c:881

The memory appears to be freed -- CLOBBER_FREED_MEMORY stuff does this.

You might try using Valgrind, with --track-origins, which will show
where the memory was first allocated.

Peter Geoghegan

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