4 files changed, 12 insertions, 2 deletions
diff --git a/tests/coroutine.test b/tests/coroutine.test
index 07feb53..8217a92 100644
--- a/tests/coroutine.test
+++ b/tests/coroutine.test
@@ -739,6 +739,8 @@ test coroutine-7.12 {coro floor above street level #3008307} -body {
     }
     boom   ; # does not crash: the coro floor is a good insulator
     list
+} -cleanup {
+    rename boom {}; rename cc {}; rename c {}
 } -result {}
 
 test coroutine-8.0.0 {coro inject executed} -body {
diff --git a/tests/foreach.test b/tests/foreach.test
index 6fd5476..84af4bd 100644
--- a/tests/foreach.test
+++ b/tests/foreach.test
@@ -212,14 +212,16 @@ test foreach-6.4 {break tests} {
     set msg
 } {wrong # args: should be "break"}
 # Check for bug #406709
-test foreach-6.5 {break tests} {
+test foreach-6.5 {break tests} -body {
     proc a {} {
 	set a 1
 	foreach b b {list [concat a; break]; incr a}
 	incr a
     }
     a
-} {2}
+} -cleanup {
+    rename a {}
+} -result {2}
 
 # Test for incorrect "double evaluation" semantics
 test foreach-7.1 {delayed substitution of body} {
diff --git a/tests/ioCmd.test b/tests/ioCmd.test
index b4ba04a..cab4e97 100644
--- a/tests/ioCmd.test
+++ b/tests/ioCmd.test
@@ -2057,6 +2057,8 @@ test iocmd-32.0 {origin interpreter of moved channel gone} -match glob -body {
     lappend res [catch {interp eval $idb [list close $chan]}      msg] $msg
     set res
 
+} -cleanup {
+    interp delete $idb
 } -constraints {testchannel} \
     -result {1 {Owner lost} 1 {Owner lost} 1 {Owner lost} 1 {Owner lost} 1 {Owner lost}}
 
@@ -2099,6 +2101,8 @@ test iocmd-32.1 {origin interpreter of moved channel destroyed during access} -m
 	set res
     }]
     set res
+} -cleanup {
+    interp delete $idb
 } -constraints {testchannel} -result {Owner lost}
 
 test iocmd-32.2 {delete interp of reflected chan} {
diff --git a/tests/ioTrans.test b/tests/ioTrans.test
index 63a609f..75752f7 100644
--- a/tests/ioTrans.test
+++ b/tests/ioTrans.test
@@ -1200,6 +1200,7 @@ test iortrans-11.0 {origin interpreter of moved transform gone} -setup {
     # without invoking the transform handler.
 } -cleanup {
     tempdone
+    interp delete $idb
 } -result {1 {Owner lost} 0 0 1 {Owner lost} 1 {Owner lost} 1 {Owner lost}}
 test iortrans-11.1 {origin interpreter of moved transform destroyed during access} -setup {
     set ida [interp create];	#puts <<$ida>>
@@ -1240,6 +1241,7 @@ test iortrans-11.1 {origin interpreter of moved transform destroyed during acces
     }]
 } -cleanup {
     tempdone
+    interp delete $idb
 } -result {Owner lost}
 test iortrans-11.2 {delete interp of reflected transform} -setup {
     interp create slave