> After 8339120, gcc began catching many different instances of unused code in 
> the Windows specific codebase. Some of these seem to be bugs. I've taken the 
> effort to mark out all the relevant globals and locals that trigger the 
> unused warnings and addressed all of them by commenting out the code as 
> appropriate. I am confident that in many cases this simplistic approach of 
> commenting out code does not fix the underlying issue, and the warning 
> actually found a bug that should be fixed. In these instances, I will be 
> aiming to fix these bugs with help from reviewers, so I recommend anyone 
> reviewing who knows more about the code than I do to see whether there is 
> indeed a bug that needs fixing in a different way than what I did
> 
> build.log on release configuration:
> 
> C:/users/vertig0/downloads/eclipse-committers-2023-12-r-win32-x86_64/workspace/jdk/src/java.desktop/windows/native/libawt/windows/awt_Component.cpp:3560:39:
>  warning: '_VKS_ALT_MASK' defined but not used [-Wunused-const-variable=]
>  3560 |                     static const UINT _VKS_ALT_MASK = 0x04;
>       |                                       ^~~~~~~~~~~~~
> C:/users/vertig0/downloads/eclipse-committers-2023-12-r-win32-x86_64/workspace/jdk/src/java.desktop/windows/native/libawt/windows/awt_Font.cpp:
>  In member function 'void CSegTable::MakeTable()':
> C:/users/vertig0/downloads/eclipse-committers-2023-12-r-win32-x86_64/workspace/jdk/src/java.desktop/windows/native/libawt/windows/awt_Font.cpp:1361:14:
>  warning: typedef 'PSUBTABLE' locally defined but not used 
> [-Wunused-local-typedefs]
>  1361 | } SUBTABLE, *PSUBTABLE;
>       |              ^~~~~~~~~
> C:/users/vertig0/downloads/eclipse-committers-2023-12-r-win32-x86_64/workspace/jdk/src/java.desktop/windows/native/libawt/windows/awt_Font.cpp:
>  In member function 'virtual void CEUDCSegTable::Create(LPCWSTR)':
> C:/users/vertig0/downloads/eclipse-committers-2023-12-r-win32-x86_64/workspace/jdk/src/java.desktop/windows/native/libawt/windows/awt_Font.cpp:1588:10:
>  warning: typedef 'PHEAD' locally defined but not used 
> [-Wunused-local-typedefs]
>  1588 | } HEAD, *PHEAD;
>       |          ^~~~~
> C:/users/vertig0/downloads/eclipse-committers-2023-12-r-win32-x86_64/workspace/jdk/src/java.desktop/windows/native/libawt/windows/awt_Font.cpp:1595:11:
>  warning: typedef 'PENTRY' locally defined but not used 
> [-Wunused-local-typedefs]
>  1595 | } ENTRY, *PENTRY;
>       |           ^~~~~~
> C:/users/vertig0/downloads/eclipse-committers-2023-12-r-win32-x86_64/workspace/jdk/src/java.desktop/windows/...

Julian Waters has updated the pull request with a new target base due to a 
merge or a rebase. The incremental webrev excludes the unrelated changes 
brought in by the merge/rebase. The pull request contains two additional 
commits since the last revision:

 - Merge branch 'openjdk:master' into awt
 - 8342869

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/21655/files
  - new: https://git.openjdk.org/jdk/pull/21655/files/ee4d1bb5..90903171

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21655&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21655&range=00-01

  Stats: 1560860 lines in 20249 files changed: 770956 ins; 654744 del; 135160 
mod
  Patch: https://git.openjdk.org/jdk/pull/21655.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21655/head:pull/21655

PR: https://git.openjdk.org/jdk/pull/21655

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