Pika buildfarm member failure on pgcrypto/test sha2

Hi,

Pika, which has been upgraded to NetBSD/mips 5.0.2, failed twice in a row pgcrypto/test sha2 because of the following warning (identical each time) :

** /home/pgbuildfarm/workdir/HEAD/pgsql.12374/contrib/pgcrypto/expected/sha2.out	Tue Feb 23 13:14:03 2010
--- /home/pgbuildfarm/workdir/HEAD/pgsql.12374/contrib/pgcrypto/results/sha2.out	Tue Feb 23 19:01:19 2010
***************
*** 65,100 ****
--- 65,106 ----

  -- SHA384
  SELECT encode(digest('', 'sha384'), 'hex');
+ WARNING:  problem in alloc set ExprContext: detected write past chunk end in block 0x7d4b0000, chunk 0x7d4b0088
                                                encode                                              
  --------------------------------------------------------------------------------------------------
   38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da274edebfe76f65fbd51ad2f14898b95b
  (1 row)

  SELECT encode(digest('a', 'sha384'), 'hex');
+ WARNING:  problem in alloc set ExprContext: detected write past chunk end in block 0x7d4b0000, chunk 0x7d4b0088
                                                encode                                              
  --------------------------------------------------------------------------------------------------
   54a59b9f22b0b80880d8427e548b7c23abd873486e1f035dce9cd697e85175033caa88e6d57bc35efae0b5afd3145f31
  (1 row)

  SELECT encode(digest('abc', 'sha384'), 'hex');
+ WARNING:  problem in alloc set ExprContext: detected write past chunk end in block 0x7d4b0000, chunk 0x7d4b0088
                                                encode                                              
  --------------------------------------------------------------------------------------------------
   cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed8086072ba1e7cc2358baeca134c825a7
  (1 row)

  SELECT encode(digest('abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq', 'sha384'), 'hex');
+ WARNING:  problem in alloc set ExprContext: detected write past chunk end in block 0x7d4b0000, chunk 0x7d4b0088
                                                encode                                              
  --------------------------------------------------------------------------------------------------
   3391fdddfc8dc7393707a65b1b4709397cf8b1d162af05abfe8f450de5f36bc6b0455a8520bc4e6f5fe95b1fe3c8452b
  (1 row)

  SELECT encode(digest('abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu', 'sha384'), 'hex');
+ WARNING:  problem in alloc set ExprContext: detected write past chunk end in block 0x7d4b0000, chunk 0x7d4b0088
                                                encode                                              
  --------------------------------------------------------------------------------------------------
   09330c33f71147e83d192fc782cd1b4753111b173b3b05d22fa08086e3b0f712fcc7c71a557e2db966c3e9fa91746039
  (1 row)

  SELECT encode(digest('abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz', 'sha384'), 'hex');
+ WARNING:  problem in alloc set ExprContext: detected write past chunk end in block 0x7d4b0000, chunk 0x7d4b0088
                                                encode                                              
  --------------------------------------------------------------------------------------------------
   3d208973ab3508dbbd7e2c2862ba290ad3010e4978c198dc4d8fd014e582823a89e16f9b2a7bbc1ac938e2d199e8bea4 

Anything I should try ?

Regards,

Rémi Zara