The jtreg sources incorrectly refer to LC_TYPE instead of LC_CTYPE.
Easy fix is:

--- a/src/share/classes/com/sun/javatest/regtest/Main.java
+++ b/src/share/classes/com/sun/javatest/regtest/Main.java
@@ -2380,7 +2380,7 @@
 
     private static final String[] DEFAULT_UNIX_ENV_VARS = {
         "DISPLAY", "GNOME_DESKTOP_SESSION_ID", "HOME", "LANG",
- "LC_ALL", "LC_TYPE", "LPDEST", "PRINTER", "TZ", "XMODIFIERS"
+ "LC_ALL", "LC_CTYPE", "LPDEST", "PRINTER", "TZ", "XMODIFIERS"
     };
 
     private static final String[] DEFAULT_WINDOWS_ENV_VARS = {
diff --git a/src/share/doc/javatest/regtest/faq.xml b/src/share/doc/javatest/regtest/faq.xml
--- a/src/share/doc/javatest/regtest/faq.xml
+++ b/src/share/doc/javatest/regtest/faq.xml
@@ -1234,7 +1234,7 @@
                             <code>HOME</code>
                             <code>LANG</code>,
                             <code>LC_ALL</code>,
- <code>LC_TYPE</code>,
+ <code>LC_CTYPE</code>,
                             <code>LPDEST</code>,
                             <code>PRINTER</code>,
                             <code>TZ</code> and
diff --git a/src/share/doc/javatest/regtest/tag-spec.html b/src/share/doc/javatest/regtest/tag-spec.html
--- a/src/share/doc/javatest/regtest/tag-spec.html
+++ b/src/share/doc/javatest/regtest/tag-spec.html
@@ -582,7 +582,7 @@
     <code>HOME</code>,
     <code>LANG</code>,
     <code>LC_ALL</code>,
- <code>LC_TYPE</code>,
+ <code>LC_CTYPE</code>,
     <code>LPDEST</code>,
     <code>PRINTER</code>,
     <code>TZ</code> and