RFR: 8349705: java.net.URI.scanIPv4Address throws unnecessary URISyntaxException

[Daniel Fuchs]

On Mon, 10 Feb 2025 08:47:36 GMT, Xiaolong Peng <xpeng at openjdk.org> wrote:

> java.net.URI.scanIPv4Address is a private method, it is only called by java.net.URI.takeIPv4Address and java.net.URI.parseIPv4Address, the URISyntaxException("Malformed IPv4 address") is not necessary, returning -1 should be good. In one of our systems, we noticed the exception consumes ~0.3% CPU.
> 
> Additional test:
> - [x] make test TEST=jdk/java/net

What tests did you run against those changes? You will need to run at least tier2 tests.

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PR Comment: https://git.openjdk.org/jdk/pull/23538#issuecomment-2647626307