Assertion failure in cvs head.

I'm implementing savepoint support for the JDBC driver and I'm seeing an
assertion failure in cvs head this morning. It seems related to using
both savepoints and the v3 protocol.

LOG: statement: create table savepointtable (id int primary key)
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index
"savepointtable_pkey" for table "savepointtable"
LOG: statement: BEGIN
LOG: statement: INSERT INTO savepointtable VALUES ($1)
LOG: statement: SAVEPOINT JDBC_SAVEPOINT_0
LOG: statement: INSERT INTO savepointtable VALUES ($1)
ERROR: duplicate key violates unique constraint "savepointtable_pkey"
LOG: statement: ROLLBACK TO SAVEPOINT JDBC_SAVEPOINT_0
TRAP: FailedAssertion("!(portal->resowner == ((void *)0))", File:
"portalmem.c", Line: 694)

Note the line number in the error message appears accurate, but doesn't
exactly match that in the stacktrace. This is the same as the last time I
reported a problem of this type. I got them to match by building with a
different compiler version (which I can do again if necessary).

#0 0x402a6721 in kill () from /lib/libc.so.6
#1 0x402a64c5 in raise () from /lib/libc.so.6
#2 0x402a79e8 in abort () from /lib/libc.so.6
#3 0x08236092 in ExceptionalCondition (
conditionName=0x6 <Address 0x6 out of bounds>,
errorType=0x8259591 "FailedAssertion", fileName=0x403ac550 "`\022",
lineNumber=0) at assert.c:51
#4 0x0824c377 in AtSubCleanup_Portals () at portalmem.c:697
#5 0x080ab2c8 in CleanupSubTransaction () at xact.c:3180
#6 0x080a9955 in CleanupAbortedSubTransactions (returnName=1 '\001')
at xact.c:1815
#7 0x080a9807 in CommitTransactionCommand () at xact.c:1770
#8 0x081c2def in finish_xact_command () at postgres.c:1833
#9 0x081c291f in exec_execute_message (portal_name=0x837fd01 "",
max_rows=1)
at postgres.c:1680
#10 0x081c4342 in PostgresMain (argc=4, argv=0x833b348,
username=0x833b254 "test") at postgres.c:3016
#11 0x0819449d in BackendRun (port=0x834a210) at postmaster.c:2848
#12 0x08193e43 in BackendStartup (port=0x834a210) at postmaster.c:2470
#13 0x0819209a in ServerLoop () at postmaster.c:1215
#14 0x081911ae in PostmasterMain (argc=3, argv=0x833add8) at
postmaster.c:898
#15 0x0815b655 in main (argc=3, argv=0x833add8) at main.c:265

Kris Jurka