hg: jdk/jdk13: 8226510: No compilation error when switch expression has no result expressions

[jan.lahoda at oracle.com]

Changeset: bad3754349aa
Author:    jlahoda
Date:      2019-06-27 10:39 +0200
URL:       http://hg.openjdk.java.net/jdk/jdk13/rev/bad3754349aa

8226510: No compilation error when switch expression has no result expressions
Summary: Ensure a compile-time error is produced when there are no result expressions in an switch expression.
Reviewed-by: vromero

! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Attr.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties
! test/langtools/tools/javac/diags/examples/BreakOutsideSwitchExpression.java
! test/langtools/tools/javac/diags/examples/ContinueOutsideSwitchExpression.java
! test/langtools/tools/javac/diags/examples/ReturnOutsideSwitchExpression.java
! test/langtools/tools/javac/diags/examples/RuleCompletesNormally.java
! test/langtools/tools/javac/diags/examples/SwitchExpressionCompletesNormally.java
+ test/langtools/tools/javac/diags/examples/SwitchExpressionNoResultExpressions.java
! test/langtools/tools/javac/switchexpr/EmptySwitch.java
! test/langtools/tools/javac/switchexpr/EmptySwitch.out
! test/langtools/tools/javac/switchexpr/ExpressionSwitchBreaks2.java
! test/langtools/tools/javac/switchexpr/ExpressionSwitchBreaks2.out
! test/langtools/tools/javac/switchexpr/ExpressionSwitchFlow.java
! test/langtools/tools/javac/switchexpr/ExpressionSwitchFlow.out
! test/langtools/tools/javac/switchexpr/WrongBreakTest.out