[Bug]: Compiler throws NPE when referring to the openapi generated client

[niveathika]

Description

$subject

gmail:Client gmailClient = check new Client(
        config = {
            auth: {
                refreshToken: refreshToken,
                clientId: clientId,
                clientSecret: clientSecret
            }
        }
    );

Compiling source
        niveathika/process_mails:0.1.0
ballerina: Oh no, something really went wrong. Bad. Sad.

We appreciate it if you can report the code that broke Ballerina in
https://github.com/ballerina-platform/ballerina-lang/issues with the
log you get below and your sample code.

We thank you for helping make us better.

[2023-10-23 11:43:02,854] SEVERE {b7a.log.crash} - Cannot read field "tag" because "referredType" is null 
java.lang.NullPointerException: Cannot read field "tag" because "referredType" is null
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:2232)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:280)
        at org.wso2.ballerinalang.compiler.tree.expressions.BLangRecordLiteral.accept(BLangRecordLiteral.java:81)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.analyzeExpr(CodeAnalyzer.java:3514)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:3190)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:280)
        at org.wso2.ballerinalang.compiler.tree.expressions.BLangNamedArgsExpression.accept(BLangNamedArgsExpression.java:75)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.analyzeExpr(CodeAnalyzer.java:3514)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.analyzeExprs(CodeAnalyzer.java:3585)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:2706)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:280)
        at org.wso2.ballerinalang.compiler.tree.expressions.BLangTypeInit.accept(BLangTypeInit.java:70)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.analyzeExpr(CodeAnalyzer.java:3514)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:3196)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:280)
        at org.wso2.ballerinalang.compiler.tree.expressions.BLangCheckedExpr.accept(BLangCheckedExpr.java:70)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.analyzeExpr(CodeAnalyzer.java:3514)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:1717)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:280)
        at org.wso2.ballerinalang.compiler.tree.BLangSimpleVariable.accept(BLangSimpleVariable.java:59)
        at org.wso2.ballerinalang.compiler.tree.SimpleBLangNodeAnalyzer.visitNode(SimpleBLangNodeAnalyzer.java:215)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.analyzeNode(CodeAnalyzer.java:349)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:1834)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:280)
        at org.wso2.ballerinalang.compiler.tree.statements.BLangSimpleVariableDef.accept(BLangSimpleVariableDef.java:55)
        at org.wso2.ballerinalang.compiler.tree.SimpleBLangNodeAnalyzer.visitNode(SimpleBLangNodeAnalyzer.java:215)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.analyzeNode(CodeAnalyzer.java:349)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:538)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:280)
        at org.wso2.ballerinalang.compiler.tree.BLangBlockFunctionBody.accept(BLangBlockFunctionBody.java:65)
        at org.wso2.ballerinalang.compiler.tree.SimpleBLangNodeAnalyzer.visitNode(SimpleBLangNodeAnalyzer.java:215)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.analyzeNode(CodeAnalyzer.java:349)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visitFunction(CodeAnalyzer.java:513)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:456)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:280)
        at org.wso2.ballerinalang.compiler.tree.BLangFunction.accept(BLangFunction.java:81)
        at org.wso2.ballerinalang.compiler.tree.SimpleBLangNodeAnalyzer.visitNode(SimpleBLangNodeAnalyzer.java:215)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.analyzeNode(CodeAnalyzer.java:349)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.analyzeTopLevelNodes(CodeAnalyzer.java:338)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:326)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.visit(CodeAnalyzer.java:280)
        at org.wso2.ballerinalang.compiler.tree.BLangPackage.accept(BLangPackage.java:172)
        at org.wso2.ballerinalang.compiler.tree.SimpleBLangNodeAnalyzer.visitNode(SimpleBLangNodeAnalyzer.java:215)
        at org.wso2.ballerinalang.compiler.semantics.analyzer.CodeAnalyzer.analyze(CodeAnalyzer.java:314)
        at io.ballerina.projects.internal.CompilerPhaseRunner.codeAnalyze(CompilerPhaseRunner.java:196)
        at io.ballerina.projects.internal.CompilerPhaseRunner.performTypeCheckPhases(CompilerPhaseRunner.java:119)
        at io.ballerina.projects.ModuleContext.compileInternal(ModuleContext.java:435)
        at io.ballerina.projects.ModuleCompilationState$1.compile(ModuleCompilationState.java:45)
        at io.ballerina.projects.ModuleContext.compile(ModuleContext.java:383)
        at io.ballerina.projects.PackageCompilation.compileModulesInternal(PackageCompilation.java:208)
        at io.ballerina.projects.PackageCompilation.compileModules(PackageCompilation.java:192)
        at io.ballerina.projects.PackageCompilation.compile(PackageCompilation.java:99)
        at io.ballerina.projects.PackageCompilation.from(PackageCompilation.java:94)
        at io.ballerina.projects.PackageContext.getPackageCompilation(PackageContext.java:242)
        at io.ballerina.projects.Package.getCompilation(Package.java:150)
        at io.ballerina.projects.Package.runCodeGeneratorPlugins(Package.java:319)
        at io.ballerina.cli.task.CompileTask.execute(CompileTask.java:142)
        at io.ballerina.cli.TaskExecutor.executeTasks(TaskExecutor.java:40)
        at io.ballerina.cli.cmd.RunCommand.execute(RunCommand.java:223)
        at java.base/java.util.Optional.ifPresent(Optional.java:178)
        at io.ballerina.cli.launcher.Main.main(Main.java:58)
 
ERROR [process_mails:(1:1,1:1)] Compilation failed due to: Cannot read field "tag" because "referredType" is null
error: compilation contains errors

Steps to Reproduce

No response

Affected Version(s)

2201.8.1

OS, DB, other environment details and versions

No response

Related area

-> Compilation

Related issue(s) (optional)

No response

Suggested label(s) (optional)

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Suggested assignee(s) (optional)

No response

[MaryamZi]

The crash should be fixed anyway. But, is it intentionally Client on the RHS and if so is Client defined in the same module or should it have been gmail:Client (or be omitted)?

[niveathika]

@MaryamZi My bad. It was supposed to be gmail:Client. There was no additional client defined in the module. This should have resulted in error.

[MaryamZi]

Duplicate of #41474.