Fix ClassCastException

wiedenm · ctrueden · commit 3f839dce3270 · 2019-09-22T15:18:11.000+02:00
Simply casting Object[] to Type[] does not work.
diff --git a/src/main/java/org/scijava/ops/OpUtils.java b/src/main/java/org/scijava/ops/OpUtils.java
@@ -191,7 +191,8 @@ public static double getPriority(final OpCandidate candidate) {
 	}
 
 	public static Type[] padTypes(final OpCandidate candidate, Type[] types) {
-		return (Type[]) padArgs(candidate, false, (Object[])types);
+		final Object[] padded = padArgs(candidate, false, (Object[]) types);
+		return Arrays.copyOf(padded, padded.length, Type[].class);
 	}
 	
 	public static Object[] padArgs(final OpCandidate candidate, final boolean secondary, Object... args) {

Original file line number	Diff line number	Diff line change
`@@ -191,7 +191,8 @@ public static double getPriority(final OpCandidate candidate) {`
`191`	`191`	`}`
`192`	`192`
`193`	`193`	`public static Type[] padTypes(final OpCandidate candidate, Type[] types) {`
`194`		`- return (Type[]) padArgs(candidate, false, (Object[])types);`
	`194`	`+ final Object[] padded = padArgs(candidate, false, (Object[]) types);`
	`195`	`+ return Arrays.copyOf(padded, padded.length, Type[].class);`
`195`	`196`	`}`
`196`	`197`
`197`	`198`	`public static Object[] padArgs(final OpCandidate candidate, final boolean secondary, Object... args) {`