GROOVY-9860

Author: eric-milles

base-test/org.eclipse.jdt.groovy.core.tests.compiler/src/org/eclipse/jdt/groovy/core/tests/xform/StaticCompilationTests.java

@@ -5344,6 +5344,27 @@ public void testCompileStatic9799() {
         runConformTest(sources, "works");
     }
 
+    @Test
+    public void testCompileStatic9860() {
+        //@formatter:off
+        String[] sources = {
+            "Main.groovy",
+            "@groovy.transform.CompileStatic\n" +
+            "class C {\n" +
+            "  static <T> void test() {\n" +
+            "    def bind = { T a, T b ->\n" +
+            "      return new Tuple2<T, T>(a, b)\n" +
+            "    }\n" +
+            "    print bind('foo', 'bar')\n" +
+            "  }\n" +
+            "}\n" +
+            "C.test()\n",
+        };
+        //@formatter:on
+
+        runConformTest(sources, "[foo, bar]");
+    }
+
     @Test
     public void testCompileStatic9863() {
         //@formatter:off

base/org.codehaus.groovy30/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingSupport.java

@@ -1131,8 +1131,11 @@ private static Parameter[] makeRawTypes(final Parameter[] parameters, final Map<
             String name = param.getType().getUnresolvedName();
             Optional<GenericsType> value = genericsPlaceholderAndTypeMap.entrySet().stream()
                 .filter(e -> e.getKey().getName().equals(name)).findFirst().map(Map.Entry::getValue);
+            /* GRECLIPSE edit -- GROOVY-9860
             ClassNode type = value.map(GenericsType::getType).orElseGet(() -> makeRawType(param.getType()));
-
+            */
+            ClassNode type = value.map(gt -> !gt.isPlaceholder() ? gt.getType() : makeRawType(gt.getType())).orElseGet(() -> makeRawType(param.getType()));
+            // GRECLIPSE end
             return new Parameter(type, param.getName());
         }).toArray(Parameter[]::new);
     }