[sqlite] Remove obsolete reference version 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/test/malloc_common.tcl

Index: third_party/sqlite/sqlite-src-3080704/test/malloc_common.tcl
diff --git a/third_party/sqlite/sqlite-src-3080704/test/malloc_common.tcl b/third_party/sqlite/sqlite-src-3080704/test/malloc_common.tcl
deleted file mode 100644
index b586c88d1f0c91f6785ae2e3e2994163d640b5e7..0000000000000000000000000000000000000000
--- a/third_party/sqlite/sqlite-src-3080704/test/malloc_common.tcl
+++ /dev/null
@@ -1,687 +0,0 @@
-# 2007 May 05
-#
-# The author disclaims copyright to this source code.  In place of
-# a legal notice, here is a blessing:
-#
-#    May you do good and not evil.
-#    May you find forgiveness for yourself and forgive others.
-#    May you share freely, never taking more than you give.
-#
-#***********************************************************************
-#
-# This file contains common code used by many different malloc tests
-# within the test suite.
-#
-# $Id: malloc_common.tcl,v 1.22 2008/09/23 16:41:30 danielk1977 Exp $
-
-# If we did not compile with malloc testing enabled, then do nothing.
-#
-ifcapable builtin_test {
-  set MEMDEBUG 1
-} else {
-  set MEMDEBUG 0
-  return 0
-}
-
-# Transient and persistent OOM errors:
-#
-set FAULTSIM(oom-transient) [list          \
-  -injectstart   {oom_injectstart 0}       \
-  -injectstop    oom_injectstop            \
-  -injecterrlist {{1 {out of memory}}}     \
-]
-set FAULTSIM(oom-persistent) [list         \
-  -injectstart {oom_injectstart 1000000}   \
-  -injectstop oom_injectstop               \
-  -injecterrlist {{1 {out of memory}}}     \
-]
-  
-# Transient and persistent IO errors:
-#
-set FAULTSIM(ioerr-transient) [list        \
-  -injectstart   {ioerr_injectstart 0}     \
-  -injectstop    ioerr_injectstop          \
-  -injecterrlist {{1 {disk I/O error}}}    \
-]
-set FAULTSIM(ioerr-persistent) [list       \
-  -injectstart   {ioerr_injectstart 1}     \
-  -injectstop    ioerr_injectstop          \
-  -injecterrlist {{1 {disk I/O error}}}    \
-]
-
-# SQLITE_FULL errors (always persistent):
-#
-set FAULTSIM(full) [list                   \
-  -injectinstall   fullerr_injectinstall   \
-  -injectstart     fullerr_injectstart     \
-  -injectstop      fullerr_injectstop      \
-  -injecterrlist   {{1 {database or disk is full}}} \
-  -injectuninstall fullerr_injectuninstall \
-]
-
-# Transient and persistent SHM errors:
-#
-set FAULTSIM(shmerr-transient) [list       \
-  -injectinstall   shmerr_injectinstall    \
-  -injectstart     {shmerr_injectstart 0}  \
-  -injectstop      shmerr_injectstop       \
-  -injecterrlist   {{1 {disk I/O error}}}  \
-  -injectuninstall shmerr_injectuninstall  \
-]
-set FAULTSIM(shmerr-persistent) [list      \
-  -injectinstall   shmerr_injectinstall    \
-  -injectstart     {shmerr_injectstart 1}  \
-  -injectstop      shmerr_injectstop       \
-  -injecterrlist   {{1 {disk I/O error}}}  \
-  -injectuninstall shmerr_injectuninstall  \
-]
-
-# Transient and persistent CANTOPEN errors:
-#
-set FAULTSIM(cantopen-transient) [list       \
-  -injectinstall   cantopen_injectinstall    \
-  -injectstart     {cantopen_injectstart 0}  \
-  -injectstop      cantopen_injectstop       \
-  -injecterrlist   {{1 {unable to open database file}}}  \
-  -injectuninstall cantopen_injectuninstall  \
-]
-set FAULTSIM(cantopen-persistent) [list      \
-  -injectinstall   cantopen_injectinstall    \
-  -injectstart     {cantopen_injectstart 1}  \
-  -injectstop      cantopen_injectstop       \
-  -injecterrlist   {{1 {unable to open database file}}}  \
-  -injectuninstall cantopen_injectuninstall  \
-]
-
-set FAULTSIM(interrupt) [list                 \
-  -injectinstall   interrupt_injectinstall    \
-  -injectstart     interrupt_injectstart      \
-  -injectstop      interrupt_injectstop       \
-  -injecterrlist   {{1 interrupted} {1 interrupt}}        \
-  -injectuninstall interrupt_injectuninstall  \
-]
-
-
-
-#--------------------------------------------------------------------------
-# Usage do_faultsim_test NAME ?OPTIONS...? 
-#
-#     -faults           List of fault types to simulate.
-#
-#     -prep             Script to execute before -body.
-#
-#     -body             Script to execute (with fault injection).
-#
-#     -test             Script to execute after -body.
-#
-#     -install          Script to execute after faultsim -injectinstall
-#
-#     -uninstall        Script to execute after faultsim -uninjectinstall
-#
-proc do_faultsim_test {name args} {
-  global FAULTSIM
-  
-  foreach n [array names FAULTSIM] {
-    if {$n != "interrupt"} {lappend DEFAULT(-faults) $n}
-  }
-  set DEFAULT(-prep)          ""
-  set DEFAULT(-body)          ""
-  set DEFAULT(-test)          ""
-  set DEFAULT(-install)       ""
-  set DEFAULT(-uninstall)     ""
-
-  fix_testname name
-
-  array set O [array get DEFAULT]
-  array set O $args
-  foreach o [array names O] {
-    if {[info exists DEFAULT($o)]==0} { error "unknown option: $o" }
-  }
-
-  set faultlist [list]
-  foreach f $O(-faults) {
-    set flist [array names FAULTSIM $f]
-    if {[llength $flist]==0} { error "unknown fault: $f" }
-    set faultlist [concat $faultlist $flist]
-  }
-
-  set testspec [list -prep $O(-prep) -body $O(-body) \
-      -test $O(-test) -install $O(-install) -uninstall $O(-uninstall)
-  ]
-  foreach f [lsort -unique $faultlist] {
-    eval do_one_faultsim_test "$name-$f" $FAULTSIM($f) $testspec
-  }
-}
-
-
-#-------------------------------------------------------------------------
-# Procedures to save and restore the current file-system state:
-#
-#   faultsim_save
-#   faultsim_restore
-#   faultsim_save_and_close
-#   faultsim_restore_and_reopen
-#   faultsim_delete_and_reopen
-#
-proc faultsim_save {args} { uplevel db_save $args }
-proc faultsim_save_and_close {args} { uplevel db_save_and_close $args }
-proc faultsim_restore {args} { uplevel db_restore $args }
-proc faultsim_restore_and_reopen {args} { 
-  uplevel db_restore_and_reopen $args 
-  sqlite3_extended_result_codes db 1
-  sqlite3_db_config_lookaside db 0 0 0
-}
-proc faultsim_delete_and_reopen {args} {
-  uplevel db_delete_and_reopen $args 
-  sqlite3_extended_result_codes db 1
-  sqlite3_db_config_lookaside db 0 0 0
-}
-
-proc faultsim_integrity_check {{db db}} {
-  set ic [$db eval { PRAGMA integrity_check }]
-  if {$ic != "ok"} { error "Integrity check: $ic" }
-}
-
-
-# The following procs are used as [do_one_faultsim_test] callbacks when 
-# injecting OOM faults into test cases.
-#
-proc oom_injectstart {nRepeat iFail} {
-  sqlite3_memdebug_fail [expr $iFail-1] -repeat $nRepeat
-}
-proc oom_injectstop {} {
-  sqlite3_memdebug_fail -1
-}
-
-# The following procs are used as [do_one_faultsim_test] callbacks when 
-# injecting IO error faults into test cases.
-#
-proc ioerr_injectstart {persist iFail} {
-  set ::sqlite_io_error_persist $persist
-  set ::sqlite_io_error_pending $iFail
-}
-proc ioerr_injectstop {} {
-  set sv $::sqlite_io_error_hit
-  set ::sqlite_io_error_persist 0
-  set ::sqlite_io_error_pending 0
-  set ::sqlite_io_error_hardhit 0
-  set ::sqlite_io_error_hit     0
-  set ::sqlite_io_error_pending 0
-  return $sv
-}
-
-# The following procs are used as [do_one_faultsim_test] callbacks when 
-# injecting shared-memory related error faults into test cases.
-#
-proc shmerr_injectinstall {} {
-  testvfs shmfault -default true
-  shmfault filter {xShmOpen xShmMap xShmLock}
-}
-proc shmerr_injectuninstall {} {
-  catch {db  close}
-  catch {db2 close}
-  shmfault delete
-}
-proc shmerr_injectstart {persist iFail} {
-  shmfault ioerr $iFail $persist
-}
-proc shmerr_injectstop {} {
-  shmfault ioerr
-}
-
-# The following procs are used as [do_one_faultsim_test] callbacks when 
-# injecting SQLITE_FULL error faults into test cases.
-#
-proc fullerr_injectinstall {} {
-  testvfs shmfault -default true
-}
-proc fullerr_injectuninstall {} {
-  catch {db  close}
-  catch {db2 close}
-  shmfault delete
-}
-proc fullerr_injectstart {iFail} {
-  shmfault full $iFail 1
-}
-proc fullerr_injectstop {} {
-  shmfault full
-}
-
-# The following procs are used as [do_one_faultsim_test] callbacks when 
-# injecting SQLITE_CANTOPEN error faults into test cases.
-#
-proc cantopen_injectinstall {} {
-  testvfs shmfault -default true
-}
-proc cantopen_injectuninstall {} {
-  catch {db  close}
-  catch {db2 close}
-  shmfault delete
-}
-proc cantopen_injectstart {persist iFail} {
-  shmfault cantopen $iFail $persist
-}
-proc cantopen_injectstop {} {
-  shmfault cantopen
-}
-
-# The following procs are used as [do_one_faultsim_test] callbacks 
-# when injecting SQLITE_INTERRUPT error faults into test cases.
-#
-proc interrupt_injectinstall {} {
-}
-proc interrupt_injectuninstall {} {
-}
-proc interrupt_injectstart {iFail} {
-  set ::sqlite_interrupt_count $iFail
-}
-proc interrupt_injectstop {} {
-  set res [expr $::sqlite_interrupt_count<=0]
-  set ::sqlite_interrupt_count 0
-  set res
-}
-
-# This command is not called directly. It is used by the 
-# [faultsim_test_result] command created by [do_faultsim_test] and used
-# by -test scripts.
-#
-proc faultsim_test_result_int {args} {
-  upvar testrc testrc testresult testresult testnfail testnfail
-  set t [list $testrc $testresult]
-  set r $args
-  if { ($testnfail==0 && $t != [lindex $r 0]) || [lsearch $r $t]<0 } {
-    error "nfail=$testnfail rc=$testrc result=$testresult list=$r"
-  }
-}
-
-#--------------------------------------------------------------------------
-# Usage do_one_faultsim_test NAME ?OPTIONS...? 
-#
-# The first argument, <test number>, is used as a prefix of the test names
-# taken by tests executed by this command. Options are as follows. All
-# options take a single argument.
-#
-#     -injectstart      Script to enable fault-injection.
-#
-#     -injectstop       Script to disable fault-injection.
-#
-#     -injecterrlist    List of generally acceptable test results (i.e. error
-#                       messages). Example: [list {1 {out of memory}}]
-#
-#     -injectinstall
-#
-#     -injectuninstall
-#
-#     -prep             Script to execute before -body.
-#
-#     -body             Script to execute (with fault injection).
-#
-#     -test             Script to execute after -body.
-#
-proc do_one_faultsim_test {testname args} {
-
-  set DEFAULT(-injectstart)     "expr"
-  set DEFAULT(-injectstop)      "expr 0"
-  set DEFAULT(-injecterrlist)   [list]
-  set DEFAULT(-injectinstall)   ""
-  set DEFAULT(-injectuninstall) ""
-  set DEFAULT(-prep)            ""
-  set DEFAULT(-body)            ""
-  set DEFAULT(-test)            ""
-  set DEFAULT(-install)         ""
-  set DEFAULT(-uninstall)       ""
-
-  array set O [array get DEFAULT]
-  array set O $args
-  foreach o [array names O] {
-    if {[info exists DEFAULT($o)]==0} { error "unknown option: $o" }
-  }
-
-  proc faultsim_test_proc {testrc testresult testnfail} $O(-test)
-  proc faultsim_test_result {args} "
-    uplevel faultsim_test_result_int \$args [list $O(-injecterrlist)]
-  "
-
-  eval $O(-injectinstall)
-  eval $O(-install)
-
-  set stop 0
-  for {set iFail 1} {!$stop} {incr iFail} {
-
-    # Evaluate the -prep script.
-    #
-    eval $O(-prep)
-
-    # Start the fault-injection. Run the -body script. Stop the fault
-    # injection. Local var $nfail is set to the total number of faults 
-    # injected into the system this trial.
-    #
-    eval $O(-injectstart) $iFail
-    set rc [catch $O(-body) res]
-    set nfail [eval $O(-injectstop)]
-
-    # Run the -test script. If it throws no error, consider this trial
-    # sucessful. If it does throw an error, cause a [do_test] test to
-    # fail (and print out the unexpected exception thrown by the -test
-    # script at the same time).
-    #
-    set rc [catch [list faultsim_test_proc $rc $res $nfail] res]
-    if {$rc == 0} {set res ok}
-    do_test $testname.$iFail [list list $rc $res] {0 ok}
-
-    # If no faults where injected this trial, don't bother running
-    # any more. This test is finished.
-    #
-    if {$nfail==0} { set stop 1 }
-  }
-
-  eval $O(-uninstall)
-  eval $O(-injectuninstall)
-}
-
-# Usage: do_malloc_test <test number> <options...>
-#
-# The first argument, <test number>, is an integer used to name the
-# tests executed by this proc. Options are as follows:
-#
-#     -tclprep          TCL script to run to prepare test.
-#     -sqlprep          SQL script to run to prepare test.
-#     -tclbody          TCL script to run with malloc failure simulation.
-#     -sqlbody          TCL script to run with malloc failure simulation.
-#     -cleanup          TCL script to run after the test.
-#
-# This command runs a series of tests to verify SQLite's ability
-# to handle an out-of-memory condition gracefully. It is assumed
-# that if this condition occurs a malloc() call will return a
-# NULL pointer. Linux, for example, doesn't do that by default. See
-# the "BUGS" section of malloc(3).
-#
-# Each iteration of a loop, the TCL commands in any argument passed
-# to the -tclbody switch, followed by the SQL commands in any argument
-# passed to the -sqlbody switch are executed. Each iteration the
-# Nth call to sqliteMalloc() is made to fail, where N is increased
-# each time the loop runs starting from 1. When all commands execute
-# successfully, the loop ends.
-#
-proc do_malloc_test {tn args} {
-  array unset ::mallocopts 
-  array set ::mallocopts $args
-
-  if {[string is integer $tn]} {
-    set tn malloc-$tn
-    catch { set tn $::testprefix-$tn }
-  }
-  if {[info exists ::mallocopts(-start)]} {
-    set start $::mallocopts(-start)
-  } else {
-    set start 0
-  }
-  if {[info exists ::mallocopts(-end)]} {
-    set end $::mallocopts(-end)
-  } else {
-    set end 50000
-  }
-  save_prng_state
-
-  foreach ::iRepeat {0 10000000} {
-    set ::go 1
-    for {set ::n $start} {$::go && $::n <= $end} {incr ::n} {
-
-      # If $::iRepeat is 0, then the malloc() failure is transient - it
-      # fails and then subsequent calls succeed. If $::iRepeat is 1, 
-      # then the failure is persistent - once malloc() fails it keeps
-      # failing.
-      #
-      set zRepeat "transient"
-      if {$::iRepeat} {set zRepeat "persistent"}
-      restore_prng_state
-      foreach file [glob -nocomplain test.db-mj*] {forcedelete $file}
-
-      do_test ${tn}.${zRepeat}.${::n} {
-  
-        # Remove all traces of database files test.db and test2.db 
-        # from the file-system. Then open (empty database) "test.db" 
-        # with the handle [db].
-        # 
-        catch {db close} 
-        catch {db2 close} 
-        forcedelete test.db
-        forcedelete test.db-journal
-        forcedelete test.db-wal
-        forcedelete test2.db
-        forcedelete test2.db-journal
-        forcedelete test2.db-wal
-        if {[info exists ::mallocopts(-testdb)]} {
-          copy_file $::mallocopts(-testdb) test.db
-        }
-        catch { sqlite3 db test.db }
-        if {[info commands db] ne ""} {
-          sqlite3_extended_result_codes db 1
-        }
-        sqlite3_db_config_lookaside db 0 0 0
-  
-        # Execute any -tclprep and -sqlprep scripts.
-        #
-        if {[info exists ::mallocopts(-tclprep)]} {
-          eval $::mallocopts(-tclprep)
-        }
-        if {[info exists ::mallocopts(-sqlprep)]} {
-          execsql $::mallocopts(-sqlprep)
-        }
-  
-        # Now set the ${::n}th malloc() to fail and execute the -tclbody 
-        # and -sqlbody scripts.
-        #
-        sqlite3_memdebug_fail $::n -repeat $::iRepeat
-        set ::mallocbody {}
-        if {[info exists ::mallocopts(-tclbody)]} {
-          append ::mallocbody "$::mallocopts(-tclbody)\n"
-        }
-        if {[info exists ::mallocopts(-sqlbody)]} {
-          append ::mallocbody "db eval {$::mallocopts(-sqlbody)}"
-        }
-
-        # The following block sets local variables as follows:
-        #
-        #     isFail  - True if an error (any error) was reported by sqlite.
-        #     nFail   - The total number of simulated malloc() failures.
-        #     nBenign - The number of benign simulated malloc() failures.
-        #
-        set isFail [catch $::mallocbody msg]
-        set nFail [sqlite3_memdebug_fail -1 -benigncnt nBenign]
-        # puts -nonewline " (isFail=$isFail nFail=$nFail nBenign=$nBenign) "
-
-        # If one or more mallocs failed, run this loop body again.
-        #
-        set go [expr {$nFail>0}]
-
-        if {($nFail-$nBenign)==0} {
-          if {$isFail} {
-            set v2 $msg
-          } else {
-            set isFail 1
-            set v2 1
-          }
-        } elseif {!$isFail} {
-          set v2 $msg
-        } elseif {
-          [info command db]=="" || 
-          [db errorcode]==7 ||
-          $msg=="out of memory"
-        } {
-          set v2 1
-        } else {
-          set v2 $msg
-          puts [db errorcode]
-        }
-        lappend isFail $v2
-      } {1 1}
-  
-      if {[info exists ::mallocopts(-cleanup)]} {
-        catch [list uplevel #0 $::mallocopts(-cleanup)] msg
-      }
-    }
-  }
-  unset ::mallocopts
-  sqlite3_memdebug_fail -1
-}
-
-
-#-------------------------------------------------------------------------
-# This proc is used to test a single SELECT statement. Parameter $name is
-# passed a name for the test case (i.e. "fts3_malloc-1.4.1") and parameter
-# $sql is passed the text of the SELECT statement. Parameter $result is
-# set to the expected output if the SELECT statement is successfully
-# executed using [db eval].
-#
-# Example:
-#
-#   do_select_test testcase-1.1 "SELECT 1+1, 1+2" {1 2}
-#
-# If global variable DO_MALLOC_TEST is set to a non-zero value, or if
-# it is not defined at all, then OOM testing is performed on the SELECT
-# statement. Each OOM test case is said to pass if either (a) executing
-# the SELECT statement succeeds and the results match those specified
-# by parameter $result, or (b) TCL throws an "out of memory" error.
-#
-# If DO_MALLOC_TEST is defined and set to zero, then the SELECT statement
-# is executed just once. In this case the test case passes if the results
-# match the expected results passed via parameter $result.
-#
-proc do_select_test {name sql result} {
-  uplevel [list doPassiveTest 0 $name $sql [list 0 [list {*}$result]]]
-}
-
-proc do_restart_select_test {name sql result} {
-  uplevel [list doPassiveTest 1 $name $sql [list 0 $result]]
-}
-
-proc do_error_test {name sql error} {
-  uplevel [list doPassiveTest 0 $name $sql [list 1 $error]]
-}
-
-proc doPassiveTest {isRestart name sql catchres} {
-  if {![info exists ::DO_MALLOC_TEST]} { set ::DO_MALLOC_TEST 1 }
-
-  if {[info exists ::testprefix] 
-   && [string is integer [string range $name 0 0]]
-  } {
-    set name $::testprefix.$name
-  }
-
-  switch $::DO_MALLOC_TEST {
-    0 { # No malloc failures.
-      do_test $name [list set {} [uplevel [list catchsql $sql]]] $catchres
-      return
-    }
-    1 { # Simulate transient failures.
-      set nRepeat 1
-      set zName "transient"
-      set nStartLimit 100000
-      set nBackup 1
-    }
-    2 { # Simulate persistent failures.
-      set nRepeat 1
-      set zName "persistent"
-      set nStartLimit 100000
-      set nBackup 1
-    }
-    3 { # Simulate transient failures with extra brute force.
-      set nRepeat 100000
-      set zName "ridiculous"
-      set nStartLimit 1
-      set nBackup 10
-    }
-  }
-
-  # The set of acceptable results from running [catchsql $sql].
-  #
-  set answers [list {1 {out of memory}} $catchres]
-  set str [join $answers " OR "]
-
-  set nFail 1
-  for {set iLimit $nStartLimit} {$nFail} {incr iLimit} {
-    for {set iFail 1} {$nFail && $iFail<=$iLimit} {incr iFail} {
-      for {set iTest 0} {$iTest<$nBackup && ($iFail-$iTest)>0} {incr iTest} {
-
-        if {$isRestart} { sqlite3 db test.db }
-
-        sqlite3_memdebug_fail [expr $iFail-$iTest] -repeat $nRepeat
-        set res [uplevel [list catchsql $sql]]
-        if {[lsearch -exact $answers $res]>=0} { set res $str }
-        set testname "$name.$zName.$iFail"
-        do_test "$name.$zName.$iLimit.$iFail" [list set {} $res] $str
-
-        set nFail [sqlite3_memdebug_fail -1 -benigncnt nBenign]
-      }
-    }
-  }
-}
-
-
-#-------------------------------------------------------------------------
-# Test a single write to the database. In this case a  "write" is a 
-# DELETE, UPDATE or INSERT statement.
-#
-# If OOM testing is performed, there are several acceptable outcomes:
-#
-#   1) The write succeeds. No error is returned.
-#
-#   2) An "out of memory" exception is thrown and:
-#
-#     a) The statement has no effect, OR
-#     b) The current transaction is rolled back, OR
-#     c) The statement succeeds. This can only happen if the connection
-#        is in auto-commit mode (after the statement is executed, so this
-#        includes COMMIT statements).
-#
-# If the write operation eventually succeeds, zero is returned. If a
-# transaction is rolled back, non-zero is returned.
-#
-# Parameter $name is the name to use for the test case (or test cases).
-# The second parameter, $tbl, should be the name of the database table
-# being modified. Parameter $sql contains the SQL statement to test.
-#
-proc do_write_test {name tbl sql} {
-  if {![info exists ::DO_MALLOC_TEST]} { set ::DO_MALLOC_TEST 1 }
-
-  # Figure out an statement to get a checksum for table $tbl.
-  db eval "SELECT * FROM $tbl" V break
-  set cksumsql "SELECT md5sum([join [concat rowid $V(*)] ,]) FROM $tbl"
-
-  # Calculate the initial table checksum.
-  set cksum1 [db one $cksumsql]
-
-  if {$::DO_MALLOC_TEST } {
-    set answers [list {1 {out of memory}} {0 {}}]
-    if {$::DO_MALLOC_TEST==1} {
-      set modes {100000 persistent}
-    } else {
-      set modes {1 transient}
-    }
-  } else {
-    set answers [list {0 {}}]
-    set modes [list 0 nofail]
-  }
-  set str [join $answers " OR "]
-
-  foreach {nRepeat zName} $modes {
-    for {set iFail 1} 1 {incr iFail} {
-      if {$::DO_MALLOC_TEST} {sqlite3_memdebug_fail $iFail -repeat $nRepeat}
-
-      set res [uplevel [list catchsql $sql]]
-      set nFail [sqlite3_memdebug_fail -1 -benigncnt nBenign]
-      if {$nFail==0} {
-        do_test $name.$zName.$iFail [list set {} $res] {0 {}}
-        return
-      } else {
-        if {[lsearch $answers $res]>=0} {
-          set res $str
-        }
-        do_test $name.$zName.$iFail [list set {} $res] $str
-        set cksum2 [db one $cksumsql]
-        if {$cksum1 != $cksum2} return
-      }
-    }
-  }
-}