什么“的mustinline价值......不是推断有一个已知值”和“内联标记，但在优化环境不绑定”

我遇到了一个编译时错误，在Visual Studio 2012与F＃的工作，而我不明白。

我可以在这里找到一个最小的片段： http://ideone.com/hbhbF

type Foo() =
     inherit System.Exception()
     member inline this.Bar() = ()

Foo().Bar()

什么是以下错误消息是什么意思？

/home/iU0RLi/prog.fs(3,22): error FS0073: internal error: the mustinline value 'Bar' was not inferred to have a known value

/home/iU0RLi/prog.fs(5,1): error FS1114: The value 'Prog.Foo.Bar' was marked inline but was not bound in the optimization environment

/home/iU0RLi/prog.fs(3,22): error FS1113: The value 'Bar' was marked inline but its implementation makes use of an internal or private function which is not sufficiently accessible

/home/iU0RLi/prog.fs(5,1): warning FS1116: A value marked as 'inline' has an unexpected value

/home/iU0RLi/prog.fs(5,1): error FS1118: Failed to inline the value 'Bar' marked 'inline', perhaps because a recursive value was marked 'inline'

文章来源: What do “the mustinline value … was not inferred to have a known value” and “marked inline but not bound in the optimization environment” mean?