RFR 8215398: -Xlog option usage => Invalid decorator '\temp\app_cds.log'.

[David Holmes]

Hi Harold,

On 19/12/2018 11:22 pm, Harold David Seigel wrote:
> Hi,
> 
> Please review this small change to fix JDK-8215398.  The fix works by 
> not treating ':' as a delimiter in a -Xlog... option string if it is 
> following by a '\' and preceded by either a single character or the text 
> 'file='.  The fix is for Windows only.
> 
> Open Webrev: 
> http://cr.openjdk.java.net/~hseigel/bug_8215398/webrev/index.html

I think I can follow the fix.

But I'm a bit concerned about the test. AFAICS the test thought it was 
already testing this case - albeit with the path quoted:

   42         // Ensure log files can be specified with full path.
   43         // On windows, this means that the file name will contain
   44         // a colon ('C:\log.txt' for example), which is used to
   45         // separate -Xlog: options (-Xlog:tags:filename:decorators).
   46         // Try to log to a file in our current directory, using 
its absolute path.
   47         String baseName = "test file.log";
   48         Path filePath = Paths.get(baseName).toAbsolutePath();
   49         String fileName = filePath.toString();
   50         File file = filePath.toFile();
...
   65         String[] validOutputs = new String[] {
   66             quote + fileName + quote,
   67             "file=" + quote + fileName + quote,
   68             quote + fileName + quote + ":",
   69             quote + fileName + quote + "::"
   70         };

But even quoted if I specify the drive designator in the path, it fails! 
Here's a local attempt at this:

D:\ade> apps\Java\jdk-11\fastdebug\bin\java 
-Xlog:safepoint=trace:'d:\safepointtrace.txt' -version
[0.014s][error][logging] Invalid decorator '\safepointtrace.txt''.
Invalid -Xlog option '-Xlog:safepoint=trace:'d:\safepointtrace.txt'', 
see error log for details.
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

So AFAICS the test can't possibly have been testing what it thought it 
was testing! ???

I'm also not sure about just adding some unquoted variants to the 
existing TestQuotedLogOutputs without renaming the test and updating the 
@summary

Thanks,
David

> JBS Bug:  https://bugs.openjdk.java.net/browse/JDK-8215398
> 
> The fix was regression tested by running Mach5 tiers 1 and 2 tests and 
> builds on Linux-x64, Windows, and Mac OS X, running tiers 3-5 tests on 
> Linux-x64, running JCK-12 Lang and VM tests on Linux-x64, and by hand on 
> Windows.
> 
> Thanks, Harol
>