Port Bug Report: pg_dump from 6.3.2 to 6.4.2 trouble

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POSTGRESQL BUG REPORT TEMPLATE
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Your name : Takuya Abe
Your email address : abe(at)homes(dot)co(dot)jp

Category : runtime: back-end
Severity : serious

Summary: pg_dump from 6.3.2 to 6.4.2 trouble

System Configuration
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Operating System : FreeBSD2.2.7R

PostgreSQL version : 6.4.2

Compiler used : gcc2.7.2.1

Hardware:
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PentiumII 320MB RAM

Versions of other tools:
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gmake 3.76.1

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Problem Description:
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I dumped with v6.3.2 pg_dump,like below

pg_dump DataBaseName > PgDumpFileName

After update system to v6.4.2,I Tried like bellow,

psql -e DataBaseName < PgDumpFileName

many DataBase was successful, but large DataBase was
unsucccessful with the bellow messages.

COPY main FROM stdin;
QUERY: COPY main FROM stdin;
pqWait() -- connection not open
PQendcopy: resetting connection
EOF

"main" is table name."main" includes 240 fields.and PgDumpFile
is over 26MB.And using Japanese contents.

v6.4.2 compiled with Japanese Option.

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Test Case:
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Solution:
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