Frank Illner <Illner (AT) lotto-brandenburg (DOT) de> writes:
That seems quite odd. I don't know what's going on, but I can suggest
how to find out. Please rebuild with

./configure --enable-debug --enable-cassert

Then run the initdb with -n added to the command line. The segfault
should then leave a "core" file in $PGDATA/base/1 (if not, try again
after doing "ulimit -c unlimited"). Then do

$ gdb /path/to/postgres-executable $PGDATA/base/1/core
gdb> bt
gdb> quit

and send us gdb's output.

regards, tom lane

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