git: openjdk/jdk: 8310835: Address gaps in -Xlint:serial checks

[Joe Darcy]

Changeset: 61ab2708
Author:    Joe Darcy <darcy at openjdk.org>
Date:      2023-07-20 01:10:46 +0000
URL:       https://git.openjdk.org/jdk/commit/61ab27087e1dd6cd2b52c608c87fba4393a0e081

8310835: Address gaps in -Xlint:serial checks

Reviewed-by: rriggs, jjg

! src/jdk.compiler/share/classes/com/sun/tools/javac/code/Symtab.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Check.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties
+ test/langtools/tools/javac/diags/examples/IneffectualExternEnum.java
+ test/langtools/tools/javac/diags/examples/IneffectualExternRecord.java
+ test/langtools/tools/javac/warnings/Serial/EnumExtern.java
+ test/langtools/tools/javac/warnings/Serial/EnumExtern.out
! test/langtools/tools/javac/warnings/Serial/EnumSerial.java
+ test/langtools/tools/javac/warnings/Serial/RecordExtern.java
+ test/langtools/tools/javac/warnings/Serial/RecordExtern.out