Integrated: 8262368: wrong verifier message for bogus return type
Harold Seigel
hseigel at openjdk.java.net
Wed Mar 3 13:21:58 UTC 2021
On Fri, 26 Feb 2021 20:07:49 GMT, Harold Seigel <hseigel at openjdk.org> wrote:
> Please review this small change to fix some verifier error messages. If a method's descriptor has a void return signature, but contains a bytecode such as 'ireturn' or 'areturn'. then it will get a VerifyError exception with the message "Method descriptor has a void return type". Conversely, if a method's descriptor has a non-void return signature, but contains a 'return' bytecode then it will get a VerifyError exception with the message "Method descriptor has a non-void return type".
>
> A sample error message looks like:
> Error: Unable to initialize main class Hi
> Caused by: java.lang.VerifyError: Method descriptor has a void return type
> Exception Details:
> Location:
> Hi.noRet(I)V @1: ireturn
> Reason:
> Type integer (current frame, stack[0]) is not assignable to top (from method signature)
> Current Frame:
> bci: @1
> flags: { }
> locals: { integer }
> stack: { integer }
> Bytecode:
> 0000000: 08ac
>
> The fix was tested with Mach5 tiers 1 and 2 on Linux, Mac OS, and Windows, tiers 3-5 on Linux x64. and the JCK Lang and VM tests on Linux x64.
>
> Thanks, Harold
This pull request has now been integrated.
Changeset: 3d3eb5c8
Author: Harold Seigel <hseigel at openjdk.org>
URL: https://git.openjdk.java.net/jdk/commit/3d3eb5c8
Stats: 127 lines in 3 files changed: 126 ins; 0 del; 1 mod
8262368: wrong verifier message for bogus return type
Reviewed-by: dholmes, coleenp
-------------
PR: https://git.openjdk.java.net/jdk/pull/2757
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