Merge pull request jruby#7869 from enebo/get_cause

enebo · web-flow · commit 4cd8ee1fb865 · 2023-08-01T10:39:45.000-04:00
Make sure Ruby exception does not provide itself as cause.
diff --git a/core/src/main/java/org/jruby/RubyException.java b/core/src/main/java/org/jruby/RubyException.java
@@ -409,7 +409,7 @@ public void setCause(IRubyObject cause) {
 
     // NOTE: can not have IRubyObject as NativeException has getCause() returning Throwable
     public Object getCause() {
-        return cause;
+        return cause == this ? null : cause;
     }
 
     public RubyStackTraceElement[] getBacktraceElements() {

Original file line number	Diff line number	Diff line change
`@@ -409,7 +409,7 @@ public void setCause(IRubyObject cause) {`
`409`	`409`
`410`	`410`	`// NOTE: can not have IRubyObject as NativeException has getCause() returning Throwable`
`411`	`411`	`public Object getCause() {`
`412`		`- return cause;`
	`412`	`+ return cause == this ? null : cause;`
`413`	`413`	`}`
`414`	`414`
`415`	`415`	`public RubyStackTraceElement[] getBacktraceElements() {`