# HG changeset patch
# User Doug Simon <doug.simon@oracle.com>
# Date 1359011801 -3600
# Node ID b30b33d9da80aedb46b19e74c8005433d9c51f2b
# Parent  5d9c23b8dbb8f06b21035232feb9d3eac525830c
sanity checks for SnippetInstaller.installSubstitutions()

diff -r 5d9c23b8dbb8 -r b30b33d9da80 graal/com.oracle.graal.snippets/src/com/oracle/graal/snippets/SnippetInstaller.java
--- a/graal/com.oracle.graal.snippets/src/com/oracle/graal/snippets/SnippetInstaller.java	Wed Jan 23 22:39:57 2013 +0100
+++ b/graal/com.oracle.graal.snippets/src/com/oracle/graal/snippets/SnippetInstaller.java	Thu Jan 24 08:16:41 2013 +0100
@@ -105,6 +105,8 @@
     public void installSubstitutions(Class<?> substitutions) {
         assert owner == Thread.currentThread() : "substitution installation must be single threaded";
         ClassSubstitution classSubstitution = substitutions.getAnnotation(ClassSubstitution.class);
+        assert classSubstitution != null;
+        assert !SnippetsInterface.class.isAssignableFrom(substitutions);
         for (Method substituteMethod : substitutions.getDeclaredMethods()) {
             MethodSubstitution methodSubstitution = substituteMethod.getAnnotation(MethodSubstitution.class);
             MacroSubstitution macroSubstitution = substituteMethod.getAnnotation(MacroSubstitution.class);