Assertion hit in JDK 1.3.1 code "infinite loop in PhaseGVN::transform"

PLEASE NOTE: this is an escalation that has already been fixed, we're filing a
bug report for tracking/putback purposes.

% >%
% >% 746 IfTrue <== 739 #1
% >% 958 Bool <== _ 1 [lt]
% >% 959 CountedLoopEnd <== 746 958 [lt]
% >% 763 IfFalse <== 959 #0
% >% 4 Start <== 4 0 #{0:control, 1:abIO, 2:memory,
3:rawptr:BotPTR,
% >4:return_address, 5:oracle/jdbc/dbaccess/DBConversion:NotNull *,
6:byte[int+]*,
% >7:int,
% >% 8:char[int+]*, 9:int}
% >% 8 Parm <== 4 Memory
% >% 0 Root <== 0 20 107 146 353 334 397 488 518 557
905 719
% >745
% >% 1 Con <== 0 #top
% >% 558 IfTrue <== 551 #1
% >% 562 AddP <== _ 546 563 87
% >% 431 Phi <== 377 366 423 #char
% >% 565 StoreC <== 558 8 562 431 #memory
% >% 754 MergeMem <== _ 754 8 8 8 8 8 8 8 8 1 8 565
% >N754:rawptr:BotPTR N8:precise klass oracle/jdbc/driver/OracleLog:
0x6b9148+376 *
% >N8:java/lang/Object
% >% * N8:java/lang/Object+4 * N8:java/lang/StringBuffer+8 *
% >N8:java/lang/StringBuffer+12 * N8:java/lang/StringBuffer+16 *
% >N8:java/lang/StringBuffer+20 *
% >% N8:oracle/jdbc/dbaccess/DBConversion+24 * N1:byte[int+]*+any
% >N8:bottom[int+]*+8 N565:char[int+]*+any
% >% 59 ThreadLocal <== 0
% >% 62 ConI <== 0 #int:60
% >% 63 AddP <== _ 1 59 62
% >% 809 LoadP <== 763 754 63 #rawptr:BotPTR
% >% #
% >% # HotSpot Virtual Machine Error, assertion failure
% >% # Please report this error at
% >% # http://java.sun.com/cgi-bin/bugreport.cgi
% >% #
% >% # assert(loop_count < K, "infinite loop in PhaseGVN::transform")
% >% #
% >% # Error ID:
%
>/export/d0/jdk131-update/hotspot/ws/solsparc/hotspot1.3.1ea/src/share/vm/
opto/ph
% >aseX.cpp, 826 [ Patched ]
% >% #
% >% # Problematic Thread: prio=5 tid=0x191940 nid=0xc runnable
% >% #
% >% Dumping core....
% >% VM option '+PrintCompilation'
% >% VM option 'NewSize=384m'
% >% VM option 'MaxNewSize=384m'
% >