On Wed, 3 Sep 2025 20:17:50 GMT, Magnus Ihse Bursie <i...@openjdk.org> wrote:

> Several java classes in java.base is generated from templates using SPP, the 
> "Stream Preprocessor". Unfortunately much of this code is very old and has 
> survived unchanged since pre-JDK 7. It does not follow modern makefile 
> standards for abstraction, safe coding practices, etc. In short, they have 
> been a thorn in the side for a long time, and the time has finally come to 
> clean them up.

I have verified that the generated java source code in gensrc is byte-by-byte 
identical with and without this patch. That is really all that is needed in 
terms of correctness, but to make sure I do not run into some unexpected 
problem I am also running a confirmation round on our internal CI.

Hm, something is messing up the command lines on the GHA hosts. Funny, I did 
not see it when testing elsewhere. I'll look into it.

For the record: the changes in the X-Coder template means that additional empty 
lines will be inserted in the generated source. This has no real effect on 
anything substantial, but it means that line numbers change, which make a 
complete byte-by-byte comparison fail for anything that is dependent on these 
classes.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/27078#issuecomment-3250651080
PR Comment: https://git.openjdk.org/jdk/pull/27078#issuecomment-3250722749
PR Comment: https://git.openjdk.org/jdk/pull/27078#issuecomment-3258508787

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