Integrated: 8336297: C2: Fix -Wzero-as-null-pointer-constant warnings in derived Node ctors

[Kim Barrett]

On Fri, 12 Jul 2024 20:24:37 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Please review this change that removes some -Wzero-as-null-pointer-constant
> warnings (when enabled) in C2 code. The constructors for some classes derived
> from Node pass 0 as the first argument to the base class constructor. Since
> that parameter is a Node*, this triggers a warning.  Changing to pass nullptr
> removes the warning.
> 
> Testing: mach5 tier1

This pull request has now been integrated.

Changeset: ab27acab
Author:    Kim Barrett <kbarrett at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/ab27acab0b0f4a8af080275e92c2f296f5f6486b
Stats:     18 lines in 5 files changed: 0 ins; 0 del; 18 mod

8336297: C2: Fix -Wzero-as-null-pointer-constant warnings in derived Node ctors

Reviewed-by: kvn, jwaters

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PR: https://git.openjdk.org/jdk/pull/20162