32 lines
2.9 KiB
Markdown
32 lines
2.9 KiB
Markdown
JDK-8184051 : jdk8 -parameters breaks annotation processor parameter names
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This is the test case showing the broken javac behavior reported in [JDK-8184051](http://bugs.java.com/bugdatabase/view_bug.do?bug_id=JDK-8184051)
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$ ./show_bug.sh
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javac 1.8.0_131
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these are the correct argument names, compiled with and without -parameters argument, compiling both classes in a single invocation:
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warning: Person(long,java.util.Date,java.lang.String,java.lang.String): 'long personNo, java.util.Date birthDate, java.lang.String firstName, java.lang.String lastName'
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warning: Person(long,java.util.Date,java.lang.String,java.lang.String): 'long personNo, java.util.Date birthDate, java.lang.String firstName, java.lang.String lastName'
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this shows expected missing parameter names when compiled in 2 steps, like in the case of libraries or multiple module projects, without -parameters:
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warning: Person(long,java.util.Date,java.lang.String,java.lang.String): 'long arg0, java.util.Date arg1, java.lang.String arg2, java.lang.String arg3'
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and finally the bug, same two step compilation as above, but -parameters passed into first step, shows shifted/incorrect parameter names:
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warning: Person(long,java.util.Date,java.lang.String,java.lang.String): 'long personNo, java.util.Date firstName, java.lang.String lastName, java.lang.String arg3'
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This was discovered by Travis Burtrum on June 19th, 2017, when writing test cases for [JdbcMapper](https://code.moparisthebest.com/moparisthebest/JdbcMapper/src/68c1c0482e56c1a2a3ea842a6a71fea3e4444738/jdbcmapper/src/main/java/com/moparisthebest/jdbc/codegen/CompileTimeRowToObjectMapper.java#L88)
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it looks like the bug currently doesn't affect javac 9b177:
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javac 9
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these are the correct argument names, compiled with and without -parameters argument, compiling both classes in a single invocation:
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warning: Person(long,java.util.Date,java.lang.String,java.lang.String): 'long personNo, java.util.Date birthDate, java.lang.String firstName, java.lang.String lastName'
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warning: Person(long,java.util.Date,java.lang.String,java.lang.String): 'long personNo, java.util.Date birthDate, java.lang.String firstName, java.lang.String lastName'
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this shows expected missing parameter names when compiled in 2 steps, like in the case of libraries or multiple module projects, without -parameters:
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warning: Person(long,java.util.Date,java.lang.String,java.lang.String): 'long arg0, java.util.Date arg1, java.lang.String arg2, java.lang.String arg3'
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and finally the bug, same two step compilation as above, but -parameters passed into first step, shows shifted/incorrect parameter names:
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warning: Person(long,java.util.Date,java.lang.String,java.lang.String): 'long personNo, java.util.Date birthDate, java.lang.String firstName, java.lang.String lastName'
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