BUG #5589: psql dies with bad free() in libedit

The following bug has been logged online:

Bug reference:      5589
Logged by:          Steve Atkins
Email address:      steve@blighty.com
PostgreSQL version: 9.0beta3
Operating system:   OS X
Description:        psql dies with bad free() in libedit
Details:

I have a database that contains two tables (partminer and partminer2), and
two sequences (partminer2_id_seq and partminer_pk), on a 9.0beta3
installation built from source with default configure options.

The database was corrupted (cable for an external drive fell out), but
apparently recovered fine on restart.

From psql, entering "\d p<tab>" works as expected. Entering "\d pa<tab>"
throws an abort from malloc(): "malloc: *** error for object 0x3: pointer
being freed was not allocated", with the error within libedit.


Process:         psql [39127]
Path:            /Volumes/G-RAID/pgsql/bin/psql
Identifier:      psql
Version:         ??? (???)
Code Type:       X86-64 (Native)
Parent Process:  bash [38218]

Date/Time:       2010-08-01 21:12:06.523 -0700
OS Version:      Mac OS X 10.6.4 (10F569)
Report Version:  6

Interval Since Last Report:          187973 sec
Crashes Since Last Report:           12
Per-App Crashes Since Last Report:   11
Anonymous UUID:                      1FE5E5C3-10D8-4225-B3F2-7AD2A0E5B4A3

Exception Type:  EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Application Specific Information:
abort() called

Thread 0 Crashed:  Dispatch queue: com.apple.main-thread
0   libSystem.B.dylib                 0x00007fff874543d6 __kill + 10
1   libSystem.B.dylib                 0x00007fff874f4972 abort + 83
2   libSystem.B.dylib                 0x00007fff8740c615 free + 128
3   libedit.2.dylib                   0x00000001000899a8 fn_complete + 659
4   libedit.2.dylib                   0x000000010008f416 rl_complete + 182
5   libedit.2.dylib                   0x000000010008f428 rl_complete + 200
6   libedit.2.dylib                   0x000000010008db87 el_gets + 709
7   libedit.2.dylib                   0x000000010008f9bf readline + 279
8   psql                              0x00000001000087cf gets_interactive + 79
9   psql                              0x000000010000c22b MainLoop + 539
10  psql                              0x000000010000e924 main + 2964
11  psql                              0x0000000100001524 start + 52

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000000  rbx: 0x0000000000000002  rcx: 0x00007fff5fbfeeb8
rdx: 0x0000000000000000
  rdi: 0x00000000000098d7  rsi: 0x0000000000000006  rbp: 0x00007fff5fbfeed0
rsp: 0x00007fff5fbfeeb8
   r8: 0x0000000000000e03   r9: 0x0000000000000000  r10: 0x00007fff87450412
r11: 0x0000000000000202
  r12: 0x00000001000cf000  r13: 0x00000001000cd000  r14: 0x0000000000000000
r15: 0x0000000000000001
  rip: 0x00007fff874543d6  rfl: 0x0000000000000202  cr2: 0x00000001000ed000

Binary Images:
       0x100000000 -        0x100051ff7 +psql ??? (???)
<9D94BB44-2BF0-1B3E-6CC9-2BA515E0606D> /Volumes/G-RAID/pgsql/bin/psql
       0x100062000 -        0x10007dff7 +libpq.5.dylib 5.3.0 (compatibility
5.0.0) <12AF8A1A-F17B-4A97-32E6-FD7EB8008A59>
/Volumes/G-RAID/pgsql/lib/libpq.5.dylib
       0x100085000 -        0x1000a1fe7  libedit.2.dylib 2.11.0
(compatibility 2.0.0) <EAF4D57B-1ADC-06CF-DAC7-72AF835140FD>
/usr/lib/libedit.2.dylib
    0x7fff5fc00000 -     0x7fff5fc3bdef  dyld 132.1 (???)
<B536F2F1-9DF1-3B6C-1C2C-9075EA219A06> /usr/lib/dyld
    0x7fff82551000 -     0x7fff82555ff7  libmathCommon.A.dylib 315.0.0
(compatibility 1.0.0) <95718673-FEEE-B6ED-B127-BCDBDB60D4E5>
/usr/lib/system/libmathCommon.A.dylib
    0x7fff82b78000 -     0x7fff82bb7fef  libncurses.5.4.dylib 5.4.0
(compatibility 5.4.0) <E1F34D53-3D62-78C0-CAD8-8AD22C110A9E>
/usr/lib/libncurses.5.4.dylib
    0x7fff87405000 -     0x7fff875c5fef  libSystem.B.dylib 125.2.0
(compatibility 1.0.0) <95E02DD0-ADEA-745B-E7FA-ABA064E4658C>
/usr/lib/libSystem.B.dylib
    0x7fffffe00000 -     0x7fffffe01fff  libSystem.B.dylib ??? (???)
<95E02DD0-ADEA-745B-E7FA-ABA064E4658C> /usr/lib/libSystem.B.dylib