Hi all,
chasing a bug on ASM, i've found that the module implementation in the JDK uses
the wrong values for ACC_TRANSITIVE and ACC_STATIC_PHASE,
in the spec [1],
0x0020 (ACC_TRANSITIVE)
0x0040 (ACC_STATIC_PHASE)
but in the implementation [2],
public static final int ACC_TRANSITIVE = 0x0010;
public static final int ACC_STATIC_PHASE = 0x0020;
The output of javap is wrong too (java.xml) is tagged as ACC_STATIC_PHASE with
the value 20,
but 20 means ACC_TRANSITIVE !
open module org.objectweb.asm.all@6.0_ALPHA2
minor version: 0
major version: 53
flags: (0x8000) ACC_MODULE
this_class: #2 // "module-info"
super_class: #0
interfaces: 0, fields: 0, methods: 0, attributes: 1
Constant pool:
...
{
}
Module:
#4,20 // "org.objectweb.asm.all" ACC_OPEN
#5 // 6.0_ALPHA2
2 // requires
#7,8000 // "java.base" ACC_MANDATED
#0
#9,20 // "java.xml" ACC_STATIC_PHASE
#0
7 // exports
#11,0 // org/objectweb/asm
#13,0 // org/objectweb/asm/commons
#15,0 // org/objectweb/asm/signature
#17,0 // org/objectweb/asm/tree
#19,0 // org/objectweb/asm/tree/analysis
#21,0 // org/objectweb/asm/util
#23,0 // org/objectweb/asm/xml
0 // opens
0 // uses
0 // provides
This means that currently ASM is the only correct implementation of the
classfile format :)
Rémi
[1] http://cr.openjdk.java.net/~mr/jigsaw/spec/lang-vm.html
[2]
http://hg.openjdk.java.net/jdk9/jdk9/jdk/file/e4b19b8d4bbf/src/java.base/share/classes/jdk/internal/module/ClassFileConstants.java#l49
