FFI needs NullPointerError exception class
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Key: JRUBY-4128
URL: http://jira.codehaus.org/browse/JRUBY-4128
Project: JRuby
Issue Type: Bug
Affects Versions: JRuby 1.3.1
Reporter: John Croisant
Assignee: Thomas E Enebo
Priority: Minor
For compatibility with Ruby-FFI, JRuby's FFI implementation should have a new
exception class, FFI::NullPointerError, which should be raised when the user
attempts to read or write from a null pointer (i.e. a pointer with address 0).
Here are some examples which should raise FFI::NullPointerError, but currently
raise RuntimeError:
{noformat}
FFI::Pointer.new(0).get_int(0)
FFI::Pointer.new(0).write_long(123)
Class.new( FFI::Struct ){ layout :a, :string }.new( FFI::Pointer.new(0) )[:a]
Class.new( FFI::Struct ){ layout :a, :double }.new( FFI::Pointer.new(0) )[:a] =
12.345
{noformat}
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