6891959: HotSpot should not throw ClassFormatError if a class has a field with...

6891959: HotSpot should not throw ClassFormatError if a class has a field with '>' and/or '<' in its name
Summary: Class file parser needs to look for and disallow '[' in names.
Reviewed-by: coleenp, never

src/share/vm/classfile/classFileParser.cpp

@@ -4309,20 +4309,21 @@ int ClassFileParser::verify_legal_method_signature(symbolHandle name, symbolHand
 }
 
 
-// Unqualified names may not contain the characters '.', ';', or '/'.
-// Method names also may not contain the characters '<' or '>', unless <init> or <clinit>.
-// Note that method names may not be <init> or <clinit> in this method.
-// Because these names have been checked as special cases before calling this method
-// in verify_legal_method_name.
-bool ClassFileParser::verify_unqualified_name(char* name, unsigned int length, int type) {
+// Unqualified names may not contain the characters '.', ';', '[', or '/'.
+// Method names also may not contain the characters '<' or '>', unless <init>
+// or <clinit>.  Note that method names may not be <init> or <clinit> in this
+// method.  Because these names have been checked as special cases before
+// calling this method in verify_legal_method_name.
+bool ClassFileParser::verify_unqualified_name(
+    char* name, unsigned int length, int type) {
   jchar ch;
 
   for (char* p = name; p != name + length; ) {
     ch = *p;
     if (ch < 128) {
       p++;
-      if (ch == '.' || ch == ';') {
-        return false;   // do not permit '.' or ';'
+      if (ch == '.' || ch == ';' || ch == '[' ) {
+        return false;   // do not permit '.', ';', or '['
       }
       if (type != LegalClass && ch == '/') {
         return false;   // do not permit '/' unless it's class name