RFR: 8281771: Crash in java_lang_invoke_MethodType::print_signature

[Aleksey Shipilev]

On Tue, 15 Feb 2022 06:43:02 GMT, Leonid Mesnik <lmesnik at openjdk.org> wrote:

> The crash happens in java.lang.invoke.MethodType.<init> when VM tries to print this objec while rtype and ptypes are not initialized yet. So the fix is just to check if they are not NULL.

Missed the spot?

src/hotspot/share/classfile/javaClasses.cpp line 4100:

> 4098:   oop rt = rtype(mt);
> 4099:   if (rt != NULL) {
> 4100:     java_lang_Class::print_signature(rtype(mt), st);

Suggestion:

    java_lang_Class::print_signature(rt, st);

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Changes requested by shade (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/7470