--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Check.java	Mon Oct 23 13:03:01 2017 +0200
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Check.java	Mon Oct 23 14:11:04 2017 +0200
@@ -3584,7 +3584,7 @@
         private boolean isCanonical(JCTree tree) {
             while (tree.hasTag(SELECT)) {
                 JCFieldAccess s = (JCFieldAccess) tree;
-                if (s.sym.owner.name != TreeInfo.symbol(s.selected).name)
+                if (s.sym.owner.getQualifiedName() != TreeInfo.symbol(s.selected).getQualifiedName())
                     return false;
                 tree = s.selected;
             }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/importChecks/ImportCanonicalSameName/ImportCanonicalSameName.java	Mon Oct 23 14:11:04 2017 +0200
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2017, Google Inc. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8187247
+ * @summary canonical import check compares classes by simple name
+ * @author cushon
+ *
+ * @compile p1/A.java p2/A.java
+ * @compile/fail/ref=ImportCanonicalSameName.out -XDrawDiagnostics ImportCanonicalSameName.java
+ */
+
+package p1;
+
+import p1.A.I;
+
+class T {
+    I i;
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/importChecks/ImportCanonicalSameName/ImportCanonicalSameName.out	Mon Oct 23 14:11:04 2017 +0200
@@ -0,0 +1,2 @@
+ImportCanonicalSameName.java:36:12: compiler.err.import.requires.canonical: p2.A.I
+1 error

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/importChecks/ImportCanonicalSameName/p1/A.java	Mon Oct 23 14:11:04 2017 +0200
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2017, Google Inc. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package p1;
+public class A extends p2.A {}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/importChecks/ImportCanonicalSameName/p2/A.java	Mon Oct 23 14:11:04 2017 +0200
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2017, Google Inc. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package p2;
+public class A {
+    public static class I {}
+}