# HG changeset patch
# User acorn
# Date 1395340600 25200
# Node ID f0d759a6a2309a1c149d530b29db24eda885f267
# Parent  2b2cc89121dbc0013dbbf338330ccb1c59dc8f13
8037167: Better method signature resolution
Reviewed-by: mschoene, hseigel, lfoltan

diff -r 2b2cc89121db -r f0d759a6a230 src/share/vm/classfile/classFileParser.cpp
--- a/src/share/vm/classfile/classFileParser.cpp	Thu Mar 20 10:06:22 2014 -0700
+++ b/src/share/vm/classfile/classFileParser.cpp	Thu Mar 20 11:36:40 2014 -0700
@@ -931,7 +931,7 @@
             "Wrong size %u for field's Signature attribute in class file %s",
             attribute_length, CHECK);
         }
-        generic_signature_index = cfs->get_u2(CHECK);
+        generic_signature_index = parse_generic_signature_attribute(CHECK);
       } else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) {
         runtime_visible_annotations_length = attribute_length;
         runtime_visible_annotations = cfs->get_u1_buffer();
@@ -2305,8 +2305,7 @@
             "Invalid Signature attribute length %u in class file %s",
             method_attribute_length, CHECK_(nullHandle));
         }
-        cfs->guarantee_more(2, CHECK_(nullHandle));  // generic_signature_index
-        generic_signature_index = cfs->get_u2_fast();
+        generic_signature_index = parse_generic_signature_attribute(CHECK_(nullHandle));
       } else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) {
         runtime_visible_annotations_length = method_attribute_length;
         runtime_visible_annotations = cfs->get_u1_buffer();
@@ -2616,6 +2615,17 @@
   return method_ordering;
 }
 
+// Parse generic_signature attribute for methods and fields
+u2 ClassFileParser::parse_generic_signature_attribute(TRAPS) {
+  ClassFileStream* cfs = stream();
+  cfs->guarantee_more(2, CHECK_0);  // generic_signature_index
+  u2 generic_signature_index = cfs->get_u2_fast();
+  check_property(
+    valid_symbol_at(generic_signature_index),
+    "Invalid Signature attribute at constant pool index %u in class file %s",
+    generic_signature_index, CHECK_0);
+  return generic_signature_index;
+}
 
 void ClassFileParser::parse_classfile_sourcefile_attribute(TRAPS) {
   ClassFileStream* cfs = stream();
diff -r 2b2cc89121db -r f0d759a6a230 src/share/vm/classfile/classFileParser.hpp
--- a/src/share/vm/classfile/classFileParser.hpp	Thu Mar 20 10:06:22 2014 -0700
+++ b/src/share/vm/classfile/classFileParser.hpp	Thu Mar 20 11:36:40 2014 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -266,6 +266,7 @@
   u1* parse_stackmap_table(u4 code_attribute_length, TRAPS);
 
   // Classfile attribute parsing
+  u2 parse_generic_signature_attribute(TRAPS);
   void parse_classfile_sourcefile_attribute(TRAPS);
   void parse_classfile_source_debug_extension_attribute(int length, TRAPS);
   u2   parse_classfile_inner_classes_attribute(u1* inner_classes_attribute_start,