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16. By Peter Pearse

Use multiarch paths when cross building.

15. By Martin Pitt

* Urgency medium, since this fixes a security bug (but also a lot of other
  bugs, it's not a pinpointed patch).
* New upstream security/bug fix update:
  - Use a separate interpreter for each calling SQL userid in PL/Perl
    and PL/Tcl.
    This change prevents security problems that can be caused by
    subverting Perl or Tcl code that will be executed later in the same
    session under another SQL user identity (for example, within a
    SECURITY DEFINER function). Most scripting languages offer numerous
    ways that that might be done, such as redefining standard functions
    or operators called by the target function. Without this change,
    any SQL user with Perl or Tcl language usage rights can do
    essentially anything with the SQL privileges of the target
    function's owner.
    The cost of this change is that intentional communication among
    Perl and Tcl functions becomes more difficult. To provide an escape
    hatch, PL/PerlU and PL/TclU functions continue to use only one
    interpreter per session. This is not considered a security issue
    since all such functions execute at the trust level of a database
    superuser already.
    It is likely that third-party procedural languages that claim to
    offer trusted execution have similar security issues. We advise
    contacting the authors of any PL you are depending on for
    security-critical purposes.
    Our thanks to Tim Bunce for pointing out this issue
    (CVE-2010-3433).
  - Prevent possible crashes in pg_get_expr() by disallowing it from
    being called with an argument that is not one of the system catalog
    columns it's intended to be used with.
  - Fix incorrect placement of placeholder evaluation.
    This bug could result in query outputs being non-null when they
    should be null, in cases where the inner side of an outer join is a
    sub-select with non-strict expressions in its output list.
  - Fix possible duplicate scans of UNION ALL member relations.
  - Fix "cannot handle unplanned sub-select" error.
    This occurred when a sub-select contains a join alias reference
    that expands into an expression containing another sub-select.
  - Fix mishandling of whole-row Vars that reference a view or
    sub-select and appear within a nested sub-select.
  - Fix mishandling of cross-type IN comparisons.
    This could result in failures if the planner tried to implement an
    IN join with a sort-then-unique-then-plain-join plan.
  - Fix computation of "ANALYZE" statistics for tsvector columns.
    The original coding could produce incorrect statistics, leading to
    poor plan choices later.
  - Improve planner's estimate of memory used by array_agg(),
    string_agg(), and similar aggregate functions.
    The previous drastic underestimate could lead to out-of-memory
    failures due to inappropriate choice of a hash-aggregation plan.
  - Fix failure to mark cached plans as transient.
    If a plan is prepared while "CREATE INDEX CONCURRENTLY" is in
    progress for one of the referenced tables, it is supposed to be
    re-planned once the index is ready for use. This was not happening
    reliably.
  - Reduce PANIC to ERROR in some occasionally-reported btree failure
    cases, and provide additional detail in the resulting error
    messages.
    This should improve the system's robustness with corrupted indexes.
  - Fix incorrect search logic for partial-match queries with GIN
    indexes.
    Cases involving AND/OR combination of several GIN index conditions
    didn't always give the right answer, and were sometimes much slower
    than necessary.
  - Prevent show_session_authorization() from crashing within
    autovacuum processes.
  - Defend against functions returning setof record where not all the
    returned rows are actually of the same rowtype.
  - Fix possible corruption of pending trigger event lists during
    subtransaction rollback.
    This could lead to a crash or incorrect firing of triggers.
  - Fix possible failure when hashing a pass-by-reference function
    result.
  - Improve merge join's handling of NULLs in the join columns.
    A merge join can now stop entirely upon reaching the first NULL, if
    the sort order is such that NULLs sort high.
  - Take care to fsync the contents of lockfiles (both "postmaster.pid"
    and the socket lockfile) while writing them.
    This omission could result in corrupted lockfile contents if the
    machine crashes shortly after postmaster start. That could in turn
    prevent subsequent attempts to start the postmaster from
    succeeding, until the lockfile is manually removed.
  - Avoid recursion while assigning XIDs to heavily-nested
    subtransactions.
    The original coding could result in a crash if there was limited
    stack space.
  - Avoid holding open old WAL segments in the walwriter process.
    The previous coding would prevent removal of no-longer-needed
    segments.
  - Fix log_line_prefix's %i escape, which could produce junk early in
    backend startup.
  - Prevent misinterpretation of partially-specified relation options
    for TOAST tables.
    In particular, fillfactor would be read as zero if any other
    reloption had been set for the table, leading to serious bloat.
  - Fix inheritance count tracking in "ALTER TABLE ... ADD CONSTRAINT"
  - Fix possible data corruption in "ALTER TABLE ... SET TABLESPACE"
    when archiving is enabled.
  - Allow "CREATE DATABASE" and "ALTER DATABASE ... SET TABLESPACE" to
    be interrupted by query-cancel.
  - Improve "CREATE INDEX"'s checking of whether proposed index
    expressions are immutable.
  - Fix "REASSIGN OWNED" to handle operator classes and families.
  - Fix possible core dump when comparing two empty tsquery values.
  - Fix LIKE's handling of patterns containing % followed by _.
    We've fixed this before, but there were still some
    incorrectly-handled cases.
  - Re-allow input of Julian dates prior to 0001-01-01 AD.
    Input such as 'J100000'::date worked before 8.4, but was
    unintentionally broken by added error-checking.
  - Fix PL/pgSQL to throw an error, not crash, if a cursor is closed
    within a FOR loop that is iterating over that cursor.
  - In PL/Python, defend against null pointer results from
    PyCObject_AsVoidPtr and PyCObject_FromVoidPtr.
  - In libpq, fix full SSL certificate verification for the case where
    both host and hostaddr are specified.
  - Make psql recognize "DISCARD ALL" as a command that should not be
    encased in a transaction block in autocommit-off mode.
  - Fix some issues in pg_dump's handling of SQL/MED objects.
    Notably, pg_dump would always fail if run by a non-superuser, which
    was not intended.
  - Improve pg_dump and pg_restore's handling of non-seekable archive
    files.
    This is important for proper functioning of parallel restore.
  - Improve parallel pg_restore's ability to cope with selective
    restore (-L option).
    The original code tended to fail if the -L file commanded a
    non-default restore ordering.
  - Fix ecpg to process data from RETURNING clauses correctly.
  - Fix some memory leaks in ecpg.
  - Improve "contrib/dblink"'s handling of tables containing dropped
    columns.
  - Fix connection leak after "duplicate connection name" errors in
    "contrib/dblink".
  - Fix "contrib/dblink" to handle connection names longer than 62
    bytes correctly.
  - Add hstore(text, text) function to "contrib/hstore".
    This function is the recommended substitute for the now-deprecated
    => operator. It was back-patched so that future-proofed code can be
    used with older server versions. Note that the patch will be
    effective only after "contrib/hstore" is installed or reinstalled
    in a particular database. Users might prefer to execute the "CREATE
    FUNCTION" command by hand, instead.
  - Update build infrastructure and documentation to reflect the source
    code repository's move from CVS to Git.
* debian/postgresql-8.4.preinst: Add missing debhelper token.
* debian/control: Bump Standards-Version to 3.9.1 (no changes necessary).

14. By Martin Pitt

* New upstream security/bug fix update: (LP: #655293)
  - Use a separate interpreter for each calling SQL userid in PL/Perl
    and PL/Tcl.
    This change prevents security problems that can be caused by
    subverting Perl or Tcl code that will be executed later in the same
    session under another SQL user identity (for example, within a
    SECURITY DEFINER function). Most scripting languages offer numerous
    ways that that might be done, such as redefining standard functions
    or operators called by the target function. Without this change,
    any SQL user with Perl or Tcl language usage rights can do
    essentially anything with the SQL privileges of the target
    function's owner.
    The cost of this change is that intentional communication among
    Perl and Tcl functions becomes more difficult. To provide an escape
    hatch, PL/PerlU and PL/TclU functions continue to use only one
    interpreter per session. This is not considered a security issue
    since all such functions execute at the trust level of a database
    superuser already.
    It is likely that third-party procedural languages that claim to
    offer trusted execution have similar security issues. We advise
    contacting the authors of any PL you are depending on for
    security-critical purposes.
    Our thanks to Tim Bunce for pointing out this issue
    (CVE-2010-3433).
  - Prevent possible crashes in pg_get_expr() by disallowing it from
    being called with an argument that is not one of the system catalog
    columns it's intended to be used with.
  - Fix incorrect placement of placeholder evaluation.
    This bug could result in query outputs being non-null when they
    should be null, in cases where the inner side of an outer join is a
    sub-select with non-strict expressions in its output list.
  - Fix possible duplicate scans of UNION ALL member relations.
  - Fix "cannot handle unplanned sub-select" error.
    This occurred when a sub-select contains a join alias reference
    that expands into an expression containing another sub-select.
  - Fix mishandling of whole-row Vars that reference a view or
    sub-select and appear within a nested sub-select.
  - Fix mishandling of cross-type IN comparisons.
    This could result in failures if the planner tried to implement an
    IN join with a sort-then-unique-then-plain-join plan.
  - Fix computation of "ANALYZE" statistics for tsvector columns.
    The original coding could produce incorrect statistics, leading to
    poor plan choices later.
  - Improve planner's estimate of memory used by array_agg(),
    string_agg(), and similar aggregate functions.
    The previous drastic underestimate could lead to out-of-memory
    failures due to inappropriate choice of a hash-aggregation plan.
  - Fix failure to mark cached plans as transient.
    If a plan is prepared while "CREATE INDEX CONCURRENTLY" is in
    progress for one of the referenced tables, it is supposed to be
    re-planned once the index is ready for use. This was not happening
    reliably.
  - Reduce PANIC to ERROR in some occasionally-reported btree failure
    cases, and provide additional detail in the resulting error
    messages.
    This should improve the system's robustness with corrupted indexes.
  - Fix incorrect search logic for partial-match queries with GIN
    indexes.
    Cases involving AND/OR combination of several GIN index conditions
    didn't always give the right answer, and were sometimes much slower
    than necessary.
  - Prevent show_session_authorization() from crashing within
    autovacuum processes.
  - Defend against functions returning setof record where not all the
    returned rows are actually of the same rowtype.
  - Fix possible corruption of pending trigger event lists during
    subtransaction rollback.
    This could lead to a crash or incorrect firing of triggers.
  - Fix possible failure when hashing a pass-by-reference function
    result.
  - Improve merge join's handling of NULLs in the join columns.
    A merge join can now stop entirely upon reaching the first NULL, if
    the sort order is such that NULLs sort high.
  - Take care to fsync the contents of lockfiles (both "postmaster.pid"
    and the socket lockfile) while writing them.
    This omission could result in corrupted lockfile contents if the
    machine crashes shortly after postmaster start. That could in turn
    prevent subsequent attempts to start the postmaster from
    succeeding, until the lockfile is manually removed.
  - Avoid recursion while assigning XIDs to heavily-nested
    subtransactions.
    The original coding could result in a crash if there was limited
    stack space.
  - Avoid holding open old WAL segments in the walwriter process.
    The previous coding would prevent removal of no-longer-needed
    segments.
  - Fix log_line_prefix's %i escape, which could produce junk early in
    backend startup.
  - Prevent misinterpretation of partially-specified relation options
    for TOAST tables.
    In particular, fillfactor would be read as zero if any other
    reloption had been set for the table, leading to serious bloat.
  - Fix inheritance count tracking in "ALTER TABLE ... ADD CONSTRAINT"
  - Fix possible data corruption in "ALTER TABLE ... SET TABLESPACE"
    when archiving is enabled.
  - Allow "CREATE DATABASE" and "ALTER DATABASE ... SET TABLESPACE" to
    be interrupted by query-cancel.
  - Improve "CREATE INDEX"'s checking of whether proposed index
    expressions are immutable.
  - Fix "REASSIGN OWNED" to handle operator classes and families.
  - Fix possible core dump when comparing two empty tsquery values.
  - Fix LIKE's handling of patterns containing % followed by _.
    We've fixed this before, but there were still some
    incorrectly-handled cases.
  - Re-allow input of Julian dates prior to 0001-01-01 AD.
    Input such as 'J100000'::date worked before 8.4, but was
    unintentionally broken by added error-checking.
  - Fix PL/pgSQL to throw an error, not crash, if a cursor is closed
    within a FOR loop that is iterating over that cursor.
  - In PL/Python, defend against null pointer results from
    PyCObject_AsVoidPtr and PyCObject_FromVoidPtr.
  - In libpq, fix full SSL certificate verification for the case where
    both host and hostaddr are specified.
  - Make psql recognize "DISCARD ALL" as a command that should not be
    encased in a transaction block in autocommit-off mode.
  - Fix some issues in pg_dump's handling of SQL/MED objects.
    Notably, pg_dump would always fail if run by a non-superuser, which
    was not intended.
  - Improve pg_dump and pg_restore's handling of non-seekable archive
    files.
    This is important for proper functioning of parallel restore.
  - Improve parallel pg_restore's ability to cope with selective
    restore (-L option).
    The original code tended to fail if the -L file commanded a
    non-default restore ordering.
  - Fix ecpg to process data from RETURNING clauses correctly.
  - Fix some memory leaks in ecpg.
  - Improve "contrib/dblink"'s handling of tables containing dropped
    columns.
  - Fix connection leak after "duplicate connection name" errors in
    "contrib/dblink".
  - Fix "contrib/dblink" to handle connection names longer than 62
    bytes correctly.
  - Add hstore(text, text) function to "contrib/hstore".
    This function is the recommended substitute for the now-deprecated
    => operator. It was back-patched so that future-proofed code can be
    used with older server versions. Note that the patch will be
    effective only after "contrib/hstore" is installed or reinstalled
    in a particular database. Users might prefer to execute the "CREATE
    FUNCTION" command by hand, instead.
  - Update build infrastructure and documentation to reflect the source
    code repository's move from CVS to Git.
* debian/postgresql-8.4.preinst: Add missing debhelper token.
* debian/control: Bump Standards-Version to 3.9.1 (no changes necessary).

13. By Martin Pitt

* Migrate to a common init script for all server versions, to avoid
  providing the "postgresql" service in multiple packages (which causes
  insserv to complain bitterly):
  - Drop debian/postgresql-8.4.init.
  - debian/control: Bump dependency to postgresql-common to ensure we have a
    common /etc/init.d/postgresql init script.
  - debian/postgresql-8.4.preinst: Remove/rename our init script on upgrade.
  - debian/postgresql-8.4.prerm: Call stop_version on upgrade.
  - debian/rules: Drop dh_installinit arguments.
  - (Closes: #585890)

12. By Martin Pitt

* Urgency medium due to security fixes.
* New upstream security/bug fix release:
  - Enforce restrictions in plperl using an opmask applied to the whole
    interpreter, instead of using "Safe.pm".
    Recent developments have convinced us that "Safe.pm" is too
    insecure to rely on for making plperl trustable. This change
    removes use of "Safe.pm" altogether, in favor of using a separate
    interpreter with an opcode mask that is always applied. Pleasant
    side effects of the change include that it is now possible to use
    Perl's strict pragma in a natural way in plperl, and that Perl's $a
    and $b variables work as expected in sort routines, and that
    function compilation is significantly faster. (CVE-2010-1169)
  - Prevent PL/Tcl from executing untrustworthy code from pltcl_modules.
    PL/Tcl's feature for autoloading Tcl code from a database table
    could be exploited for trojan-horse attacks, because there was no
    restriction on who could create or insert into that table. This
    change disables the feature unless pltcl_modules is owned by a
    superuser. (However, the permissions on the table are not checked,
    so installations that really need a less-than-secure modules table
    can still grant suitable privileges to trusted non-superusers.)
    Also, prevent loading code into the unrestricted "normal" Tcl
    interpreter unless we are really going to execute a pltclu
    function. (CVE-2010-1170)
  - Fix data corruption during WAL replay of ALTER ... SET TABLESPACE.
    When archive_mode is on, ALTER ... SET TABLESPACE generates a WAL
    record whose replay logic was incorrect. It could write the data to
    the wrong place, leading to possibly-unrecoverable data corruption.
    Data corruption would be observed on standby slaves, and could
    occur on the master as well if a database crash and recovery
    occurred after committing the ALTER and before the next checkpoint.
  - Fix possible crash if a cache reset message is received during
    rebuild of a relcache entry.
    This error was introduced in 8.4.3 while fixing a related failure.
  - Apply per-function GUC settings while running the language
    validator for the function. This avoids failures if the function's code
    is invalid without the setting; an example is that SQL functions may not
    parse if the search_path is not correct.
  - Do constraint exclusion for inherited "UPDATE" and "DELETE" target
    tables when constraint_exclusion = partition.
    Due to an oversight, this setting previously only caused constraint
    exclusion to be checked in "SELECT" commands.
  - Do not allow an unprivileged user to reset superuser-only parameter
    settings.
    Previously, if an unprivileged user ran ALTER USER ... RESET ALL
    for himself, or ALTER DATABASE ... RESET ALL for a database he
    owns, this would remove all special parameter settings for the user
    or database, even ones that are only supposed to be changeable by a
    superuser. Now, the "ALTER" will only remove the parameters that
    the user has permission to change.
  - Avoid possible crash during backend shutdown if shutdown occurs
    when a CONTEXT addition would be made to log entries.
    In some cases the context-printing function would fail because the
    current transaction had already been rolled back when it came time
    to print a log message.
  - Fix erroneous handling of %r parameter in recovery_end_command.
    The value always came out zero.
  - Ensure the archiver process responds to changes in archive_command
    as soon as possible.
  - Fix pl/pgsql's CASE statement to not fail when the case expression
    is a query that returns no rows.
  - Update pl/perl's "ppport.h" for modern Perl versions.
  - Fix assorted memory leaks in pl/python.
  - Handle empty-string connect parameters properly in ecpg.
  - Prevent infinite recursion in psql when expanding a variable that
    refers to itself.
  - Fix psql's \copy to not add spaces around a dot within \copy
    (select ...).
    Addition of spaces around the decimal point in a numeric literal
    would result in a syntax error.
  - Avoid formatting failure in psql when running in a locale context
    that doesn't match the client_encoding.
  - Fix unnecessary "GIN indexes do not support whole-index scans"
    errors for unsatisfiable queries using "contrib/intarray" operators.
  - Ensure that "contrib/pgstattuple" functions respond to cancel
    interrupts promptly.

11. By Martin Pitt

* New upstream bug fix release:
  - Add new configuration parameter ssl_renegotiation_limit to control
    how often we do session key renegotiation for an SSL connection.
    This can be set to zero to disable renegotiation completely, which
    may be required if a broken SSL library is used. In particular,
    some vendors are shipping stopgap patches for CVE-2009-3555 that
    cause renegotiation attempts to fail.
  - Fix possible deadlock during backend startup.
  - Fix possible crashes due to not handling errors during relcache
    reload cleanly.
  - Fix possible crash due to use of dangling pointer to a cached plan.
  - Fix possible crash due to overenthusiastic invalidation of cached
    plan for "ROLLBACK".
  - Fix possible crashes when trying to recover from a failure in
    subtransaction start.
  - Fix server memory leak associated with use of savepoints and a
    client encoding different from server's encoding.
  - Fix incorrect WAL data emitted during end-of-recovery cleanup of a
    GIST index page split.
  - Fix bug in WAL redo cleanup method for GIN indexes.
  - Fix incorrect comparison of scan key in GIN index search.
  - Make substring() for bit types treat any negative length as meaning
    "all the rest of the string". The previous coding treated only -1 that
    way, and would produce an invalid result value for other negative
    values, possibly leading to a crash (CVE-2010-0442).
  - Fix integer-to-bit-string conversions to handle the first
    fractional byte correctly when the output bit width is wider than
    the given integer by something other than a multiple of 8 bits.
  - Fix some cases of pathologically slow regular expression matching.
  - Fix bug occurring when trying to inline a SQL function that returns
    a set of a composite type that contains dropped columns.
  - Fix bug with trying to update a field of an element of a
    composite-type array column.
  - Avoid failure when "EXPLAIN" has to print a FieldStore or
    assignment ArrayRef expression.
    These cases can arise now that "EXPLAIN VERBOSE" tries to print
    plan node target lists.
  - Avoid an unnecessary coercion failure in some cases where an
    undecorated literal string appears in a subquery within
    "UNION"/"INTERSECT"/"EXCEPT".
    This fixes a regression for some cases that worked before 8.4.
  - Avoid undesirable rowtype compatibility check failures in some
    cases where a whole-row Var has a rowtype that contains dropped
    columns.
  - Fix the STOP WAL LOCATION entry in backup history files to report
    the next WAL segment's name when the end location is exactly at a
    segment boundary.
  - Always pass the catalog ID to an option validator function
    specified in "CREATE FOREIGN DATA WRAPPER".
  - Fix some more cases of temporary-file leakage.
    This corrects a problem introduced in the previous minor release.
    One case that failed is when a plpgsql function returning set is
    called within another function's exception handler.
  - Add support for doing FULL JOIN ON FALSE.
    This prevents a regression from pre-8.4 releases for some queries
    that can now be simplified to a constant-false join condition.
  - Improve constraint exclusion processing of boolean-variable cases,
    in particular make it possible to exclude a partition that has a
    "bool_column = false" constraint.
  - Prevent treating an INOUT cast as representing binary compatibility.
  - Include column name in the message when warning about inability to
    grant or revoke column-level privileges.
    This is more useful than before and helps to prevent confusion when
    a "REVOKE" generates multiple messages, which formerly appeared to
    be duplicates.
  - When reading "pg_hba.conf" and related files, do not treat
    @something as a file inclusion request if the @ appears inside
    quote marks; also, never treat @ by itself as a file inclusion
    request.
    This prevents erratic behavior if a role or database name starts
    with @. If you need to include a file whose path name contains
    spaces, you can still do so, but you must write @"/path to/file"
    rather than putting the quotes around the whole construct.
  - Prevent infinite loop on some platforms if a directory is named as
    an inclusion target in "pg_hba.conf" and related files.
  - Fix possible infinite loop if SSL_read or SSL_write fails without
    setting errno.
    This is reportedly possible with some Windows versions of openssl.
  - Disallow GSSAPI authentication on local connections, since it
    requires a hostname to function correctly.
  - Protect ecpg against applications freeing strings unexpectedly.
  - Make ecpg report the proper SQLSTATE if the connection disappears.
  - Fix translation of cell contents in psql \d output.
  - Fix psql's numericlocale option to not format strings it shouldn't
    in latex and troff output formats.
  - Fix a small per-query memory leak in psql.
  - Make psql return the correct exit status (3) when ON_ERROR_STOP and
    --single-transaction are both specified and an error occurs during
    the implied "COMMIT".
  - Fix pg_dump's output of permissions for foreign servers.
  - Fix possible crash in parallel pg_restore due to out-of-range
    dependency IDs.
  - Fix plpgsql failure in one case where a composite column is set to
    NULL.
  - Fix possible failure when calling PL/Perl functions from PL/PerlU
    or vice versa.
  - Add volatile markings in PL/Python to avoid possible
    compiler-specific misbehavior>
  - Ensure PL/Tcl initializes the Tcl interpreter.
    The only known symptom of this oversight is that the Tcl clock
    command misbehaves if using Tcl 8.5 or later.
  - Prevent ExecutorEnd from being run on portals created within a
    failed transaction or subtransaction.
    This is known to cause issues when using "contrib/auto_explain".
  - Prevent crash in "contrib/dblink" when too many key columns are
    specified to a dblink_build_sql_- function.
  - Allow zero-dimensional arrays in "contrib/ltree" operations.
    This case was formerly rejected as an error, but it's more
    convenient to treat it the same as a zero-element array. In
    particular this avoids unnecessary failures when an ltree operation
    is applied to the result of ARRAY(SELECT ...) and the sub-select
    returns no rows.
  - Fix assorted crashes in "contrib/xml2" caused by sloppy memory
    management.
* Rebuild against libossp-uuid16. (Closes: #570108, LP: #538284)

10. By Martin Pitt

Rebuild against libossp-uuid16. (Closes: #570108, LP: #538284)

9. By Martin Pitt

[ Alexander Sack ]
* Add 04-armel-tas.patch: Fix ftbfs on armel: Use gcc intrinsics rather
  than assembler to implement tas (test and set). (LP: #497331)

[ Martin Pitt ]
* Drop 15-dict-fallback-dir.patch: p-common 104 now directly creates the
  names tsearch is looking for. Bump p-common dependency accordingly.

8. By Martin Pitt

Medium urgency due to security fixes.

[ Peter Eisentraut ]
* debian/control: Added Homepage
* debian/control: Added ${misc:Depends} on all packages, per lintian
* debian/control: Added versioned dependencies on the shared libraries used
  by the libecpg-dev package
* debian/control: Removed obsolete build dependency bzip2
* debian/control: Added Vcs fields

[ Martin Pitt ]
* New upstream security/bug fix release:
  - Protect against indirect security threats caused by index functions
    changing session-local state. This change prevents allegedly-immutable
    index functions from possibly subverting a superuser's session
    (CVE-2009-4136).
  - Reject SSL certificates containing an embedded null byte in the
    common name (CN) field. This prevents unintended matching of a
    certificate to a server or client name during SSL validation
    (CVE-2009-4034).
  - Fix hash index corruption. The 8.4 change that made hash indexes keep
    entries sorted by hash value failed to update the bucket splitting and
    compaction routines to preserve the ordering. So application of either
    of those operations could lead to permanent corruption of an index, in
    the sense that searches might fail to find entries that are present. To
    deal with this, it is recommended to REINDEX any hash indexes you may
    have after installing this update.
  - Fix possible crash during backend-startup-time cache initialization.
  - Avoid crash on empty thesaurus dictionary.
  - Prevent signals from interrupting VACUUM at unsafe times.
  - Fix possible crash due to integer overflow in hash table size
    calculation.
  - Fix crash if a DROP is attempted on an internally-dependent object.
  - Fix very rare crash in inet/cidr comparisons.
  - Ensure that shared tuple-level locks held by prepared transactions
    are not ignored.
  - Fix premature drop of temporary files used for a cursor that is
    accessed within a subtransaction.
  - Fix memory leak in syslogger process when rotating to a new CSV
    logfile.
  - Fix memory leak in postmaster when re-parsing "pg_hba.conf".
  - Make FOR UPDATE/SHARE in the primary query not propagate into WITH
    queries.
  - Fix bug with a WITH RECURSIVE query immediately inside another one.
  - Fix concurrency bug in hash indexes.
  - Fix incorrect logic for GiST index page splits, when the split
    depends on a non-first column of the index.
  - Fix wrong search results for a multi-column GIN index with
    fastupdate enabled.
  - Fix bugs in WAL entry creation for GIN indexes.
  - Don't error out if recycling or removing an old WAL file fails at
    the end of checkpoint.
  - Fix PAM password processing to be more robust.
    The previous code is known to fail with the combination of the
    Linux pam_krb5 PAM module with Microsoft Active Directory as the
    domain controller. It might have problems elsewhere too, since it
    was making unjustified assumptions about what arguments the PAM
    stack would pass to it.
  - Raise the maximum authentication token (Kerberos ticket) size in
    GSSAPI and SSPI authentication methods. While the old 2000-byte limit
    was more than enough for Unix Kerberos implementations, tickets issued
    by Windows Domain Controllers can be much larger.
  - Ensure that domain constraints are enforced in constructs like
    ARRAY[...]::domain, where the domain is over an array type.
  - Fix foreign-key logic for some cases involving composite-type
    columns as foreign keys.
  - Ensure that a cursor's snapshot is not modified after it is created.
  - Fix CREATE TABLE to properly merge default expressions coming from
    different inheritance parent tables. This used to work but was broken in
    8.4.
  - Re-enable collection of access statistics for sequences. This used to
    work but was broken in 8.3.
  - Fix processing of ownership dependencies during CREATE OR REPLACE
    FUNCTION.
  - Fix incorrect handling of WHERE "x"="x" conditions.
    In some cases these could get ignored as redundant, but they aren't
    -- they're equivalent to "x" IS NOT NULL.
  - Fix incorrect plan construction when using hash aggregation to
    implement DISTINCT for textually identical volatile expressions
  - Fix Assert failure for a volatile SELECT DISTINCT ON expression
  - Fix ts_stat() to not fail on an empty tsvector value
  - Make text search parser accept underscores in XML attributes
  - Fix encoding handling in xml binary input.
    If the XML header doesn't specify an encoding, we now assume UTF-8
    by default; the previous handling was inconsistent.
  - Fix bug with calling plperl from plperlu or vice versa.
  - Fix session-lifespan memory leak when a PL/Perl function is
    redefined.
  - Ensure that Perl arrays are properly converted to PostgreSQL arrays
    when returned by a set-returning PL/Perl function.
  - Fix rare crash in exception processing in PL/Python.
  - Fix ecpg problem with comments in DECLARE CURSOR statements
  - Fix ecpg to not treat recently-added keywords as reserved words
    This affected the keywords CALLED, CATALOG, DEFINER, ENUM,
    FOLLOWING, INVOKER, OPTIONS, PARTITION, PRECEDING, RANGE, SECURITY,
    SERVER, UNBOUNDED, and WRAPPER.
  - Re-allow regular expression special characters in psql's \df
    function name parameter.
  - Put FREEZE and VERBOSE options in the right order in the VACUUM
    command that "contrib/vacuumdb" produces.
  - Fix possible leak of connections when "contrib/dblink" encounters
    an error
  - Make the postmaster ignore any application_name parameter in
    connection request packets, to improve compatibility with future
    libpq versions.
* debian/control: libreadline5-dev → libreadline-dev. (Closes: #553831)
* Add 03-sh-architecture.patch: Support Renesas' SuperH architecture, thanks
  Nobuhiro Iwamatsu! (Closes: #548847)

7. By Martin Pitt

* Urgency medium due to security fix.
* New upstream security/bug fix release:
  - Disallow "RESET ROLE" and "RESET SESSION AUTHORIZATION" inside
    security-definer functions. This covers a case that was missed in the
    previous patch that disallowed "SET ROLE" and "SET SESSION
    AUTHORIZATION" inside security-definer functions. [CVE-2007-6600]
  - Fix WAL page header initialization at the end of archive recovery.
    This could lead to failure to process the WAL in a subsequent archive
    recovery.
  - Fix "cannot make new WAL entries during recovery" error.
  - Fix problem that could make expired rows visible after a crash.
    This bug involved a page status bit potentially not being set
    correctly after a server crash.
  - Make "LOAD" of an already-loaded loadable module into a no-op.
    Formerly, "LOAD" would attempt to unload and re-load the module,
    but this is unsafe and not all that useful.
  - Make window function PARTITION BY and ORDER BY items always be
    interpreted as simple expressions.
    In 8.4.0 these lists were parsed following the rules used for
    top-level GROUP BY and ORDER BY lists. But this was not correct per
    the SQL standard, and it led to possible circularity.
  - Fix several errors in planning of semi-joins. These led to wrong query
    results in some cases where IN or EXISTS was used together with another
    join.
  - Fix handling of whole-row references to subqueries that are within
    an outer join. An example is SELECT COUNT(ss.-) FROM ... LEFT JOIN
    (SELECT ...) ss ON .... Here, ss.- would be treated as
    ROW(NULL,NULL,...) for null-extended join rows, which is not the same as
    a simple NULL. Now it is treated as a simple NULL.
  - Fix locale handling with plperl. This bug could cause the server's
    locale setting to change when a plperl function is called, leading to
    data corruption.
  - Fix handling of reloptions to ensure setting one option doesn't
    force default values for others.
  - Ensure that a "fast shutdown" request will forcibly terminate open
    sessions, even if a "smart shutdown" was already in progress.
  - Avoid memory leak for array_agg() in GROUP BY queries.
  - Treat to_char(..., 'TH') as an uppercase ordinal suffix with
    'HH'/'HH12'. It was previously handled as 'th'.
  - Include the fractional part in the result of EXTRACT(second) and
    EXTRACT(milliseconds) for time and time with time zone inputs.
    This has always worked for floating-point datetime configurations,
    but was broken in the integer datetime code.
  - Fix overflow for INTERVAL 'x ms' when "x" is more than 2 million
    and integer datetimes are in use.
  - Improve performance when processing toasted values in index scans.
    This is particularly useful for PostGIS.
  - Fix a typo that disabled commit_delay.
  - Output early-startup messages to "postmaster.log" if the server is
    started in silent mode. Previously such error messages were discarded,
    leading to difficulty in debugging.
  - Remove translated FAQs. They are now on the wiki. The main FAQ was moved
    to the wiki some time ago.
  - Fix pg_ctl to not go into an infinite loop if "postgresql.conf" is
    empty.
  - Fix several errors in pg_dump's --binary-upgrade mode. pg_dump
    --binary-upgrade is used by pg_migrator.
  - Fix "contrib/xml2"'s xslt_process() to properly handle the maximum
    number of parameters (twenty).
  - Improve robustness of libpq's code to recover from errors during
    "COPY FROM STDIN".
  - Avoid including conflicting readline and editline header files when
    both libraries are installed.
  - Work around gcc bug that causes "floating-point exception" instead
    of "division by zero" on some platforms.
* debian/control: Bump Standards-Version to 3.8.3 (no changes necessary).

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