Integrated: 8337976: Insufficient error recovery in parser for switch inside class body

[Jan Lahoda]

On Fri, 9 Aug 2024 14:57:21 GMT, Jan Lahoda <jlahoda at openjdk.org> wrote:

> Consider this code:
> 
> public class T9999999 {
>     switch (0) { default: }
> }
> 
> 
> When trying to compile this, javac crashes:
> 
> 
> $ .../jdk-22/bin/javac -XDdev /tmp/T9999999.java
> /tmp/T9999999.java:2: error: switch expression does not have any result expressions
>     switch (0) { default: } f;
>     ^
> 1 error
> An exception has occurred in the compiler (22.0.1-internal). Please file a bug against the Java compiler via the Java bug reporting page (https://bugreport.java.com/) after checking the Bug Database (https://bugs.java.com/) for duplicates. Include your program, the following diagnostic, and the parameters passed to the Java compiler in your report. Thank you.
> java.lang.AssertionError: Unexpected tree: switch (0) {
> default:
> 
> } with kind: SWITCH_EXPRESSION within: switch (0) {
> default:
> 
> } with kind: SWITCH_EXPRESSION
>         at jdk.compiler/com.sun.tools.javac.util.Assert.error(Assert.java:162)
>         at jdk.compiler/com.sun.tools.javac.comp.Attr$TypeAnnotationsValidator.validateAnnotatedType(Attr.java:5881)
>         at jdk.compiler/com.sun.tools.javac.comp.Attr$TypeAnnotationsValidator.visitVarDef(Attr.java:5727)
>         at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:1022)
>         at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:50)
>         at jdk.compiler/com.sun.tools.javac.comp.Attr$TypeAnnotationsValidator.visitClassDef(Attr.java:5780)
>         at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:814)
>         at jdk.compiler/com.sun.tools.javac.comp.Attr.validateTypeAnnotations(Attr.java:5677)
>         at jdk.compiler/com.sun.tools.javac.code.TypeAnnotations.lambda$validateTypeAnnotationsSignatures$1(TypeAnnotations.java:144)
>         at jdk.compiler/com.sun.tools.javac.comp.Annotate.flush(Annotate.java:200)
>         at jdk.compiler/com.sun.tools.javac.comp.Annotate.unblockAnnotations(Annotate.java:144)
>         at jdk.compiler/com.sun.tools.javac.comp.Annotate.enterDone(Annotate.java:157)
>         at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.enterDone(JavaCompiler.java:1827)
>         at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.enterTrees(JavaCompiler.java:1081)
>         at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:947)
>         at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:319)
>         at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:178)
>         at jdk.compiler/com.sun.tools.javac.Main.compile(...

This pull request has now been integrated.

Changeset: fbe4f056
Author:    Jan Lahoda <jlahoda at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/fbe4f05636c8f692bd40bbe11fb5bb8b77b77042
Stats:     132 lines in 9 files changed: 122 ins; 1 del; 9 mod

8337976: Insufficient error recovery in parser for switch inside class body

Reviewed-by: vromero

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

PR: https://git.openjdk.org/jdk/pull/20526