JDK-6874250 : Mixup between binary names and descriptors in Runtime*Annotations attributes
- Type: Bug
- Component: specification
- Sub-Component: vm
- Affected Version: 7
- Priority: P4
- Status: Closed
- Resolution: Fixed
- OS: generic
- CPU: generic
- Submitted: 2009-08-20
- Updated: 2014-02-26
- Resolved: 2011-07-22
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| JDK 7 |
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7 rcFixed  |
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Description
JVMS3 4.7.16 and 4.7.16.1 describe how type names are stored in the ClassFile attributes for annotations. (The JVMS3 text is taken from http://java.sun.com/docs/books/jvms/second_edition/ClassFileFormat-Java5.pdf) [4.7.16] annotations.element_value_pairs[].element_name_index points to a CONSTANT_Utf8_info representing "the name of the annotation type element". [4.7.16.1] annotations.element_value_pairs[].element_value.enum_const_value.type_name_index points to a CONSTANT_Utf8_info representing "the internal form of the binary name (��4.2.1) of the type of the enum constant represented by this element_value structure." In both cases, javac emits a descriptor for the CONSTANT_Utf8_info. This is overkill, since only class/interface names can possibly appear as the name of an annotation type or an enum constant, and class/interface names can be fully encoded with just a binary name. But what javac writes does appear to agree with what java.lang.reflect.Class.getAnnotations() reads.
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