On Thu, 11 Feb 2021 17:31:34 GMT, Kevin Rushforth <k...@openjdk.org> wrote:

>> On Mac Os X, the OSVersionTest detected a difference in the version number 
>> reported in the os.version property
>> and the version number provided by `sw_vers -productVersion`.
>> 
>> When the java runtime is built with XCode 11.3, the os.version is reported 
>> as 10.16
>> though the current version numbering is 11.nnn.  
>> 
>> The workaround is to derive the os.version number from the 
>> ProductBuildVersion.
>> When the toolchain is updated to XCode 12.nnn it can be removed.
>> The workaround is enabled only when the environment variable 
>> SYSTEM_VERSION_COMPAT is unset.  
>> When the SYSTEM_VERSION_COMPAT is set in the environment the version number 
>> is reported as reported by Mac OS X.
>
> src/java.base/macosx/native/libjava/java_props_macosx.c line 250:
> 
>> 248: 
>> 249:         NSString *nsVerStr;
>> 250:         // Copy out the char* if running on version other than 
>> pre-10.16 Mac OS (10.16 == 11.x)
> 
> Isn't the comment backwards from what the test does? I would think it should 
> be "if running on version other than 10.16 Mac OS ...". Or am I missing 
> something?

@kevinrushforth I think you are correct. This is actually mea culpa I think as 
I had provided in a Slack thread a failed attempt at a patch for this which 
contained this comment.

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

PR: https://git.openjdk.java.net/jdk/pull/2530

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