aot compiler halts when there exists an infinite loop in clinit()

[Peter Levart]

<joke-mode>
Assuming your hunch is correct, I would call this a feature, not a bug. 
Isn't it better when compilation of a program loops infinitely than when 
the program loops infinitely at runtime? :-)
</joke-mode>

Regards, Peter

On 04/18/2017 03:14 AM, Yuting Chen wrote:
> Hi, I recently met a problem: when I tried to compile a class whose
> clinit method contains an infinite loop, the aotc waits and fails to
> response....
>
> It seems that the aotc performs some static analysis before the
> compilation, while the analysis may not stop (when an infinite loop is
> there).
>
> The bytecode is shown as follows:
>
> public class Vector1
>    minor version: 0
>    major version: 52
>    flags: ACC_PUBLIC, ACC_SUPER
> Constant pool:
>     #1 = Utf8               Vector1
>     #2 = Class              #1             // Vector1
>     #3 = Utf8               java/lang/Object
>     #4 = Class              #3             // java/lang/Object
>     #5 = Utf8               serialVersionUID
>     #6 = Utf8               J
>     #7 = Long               -2767605614048989439l
>     #9 = Utf8               <clinit>
>    #10 = Utf8               ()V
>    #11 = NameAndType        #5:#6          // serialVersionUID:J
>    #12 = Fieldref           #2.#11         // Vector1.serialVersionUID:J
>    #13 = Utf8               main
>    #14 = Utf8               ([Ljava/lang/String;)V
>    #15 = Utf8               ConstantValue
>    #16 = Utf8               Code
>    #17 = Utf8               StackMapTable
> {
>    public static {};
>      descriptor: ()V
>      flags: ACC_PUBLIC, ACC_STATIC
>      Code:
>        stack=2, locals=0, args_size=0
>           0: ldc2_w        #7                  // long -2767605614048989439l
>           3: putstatic     #12                 // Field serialVersionUID:J
>           6: iconst_1
>           7: iconst_m1
>           8: iadd
>           9: ifge          0
>          12: return
>        StackMapTable: number_of_entries = 1
>          frame_type = 0 /* same */
>
>    public static void main(java.lang.String[]);
>      descriptor: ([Ljava/lang/String;)V
>      flags: ACC_PUBLIC, ACC_STATIC
>      Code:
>        stack=0, locals=1, args_size=1
>           0: return
> }