diff --git a/core/clang/config.mk b/core/clang/config.mk
index 0c5e963..03e8dd5 100644
--- a/core/clang/config.mk
+++ b/core/clang/config.mk
@@ -1,7 +1,6 @@
 ## Clang configurations.
 
-LLVM_PREBUILTS_VERSION := 3.6
-FORCE_BUILD_SANITIZER_SHARED_OBJECTS := true
+LLVM_PREBUILTS_VERSION := 3.8
 LLVM_PREBUILTS_PATH := prebuilts/clang/host/$(BUILD_OS)-x86/$(LLVM_PREBUILTS_VERSION)/bin
 LLVM_RTLIB_PATH := $(LLVM_PREBUILTS_PATH)/../lib/clang/$(LLVM_PREBUILTS_VERSION)/lib/linux/
 
diff --git a/core/config_sanitizers.mk b/core/config_sanitizers.mk
index 7189338..df52e72 100644
--- a/core/config_sanitizers.mk
+++ b/core/config_sanitizers.mk
@@ -84,7 +84,7 @@
 endif
 
 ifneq ($(my_sanitize),)
-  fsanitize_arg := $(subst $(space),$(comma),$(my_sanitize)),
+  fsanitize_arg := $(subst $(space),$(comma),$(my_sanitize))
   my_cflags += -fsanitize=$(fsanitize_arg)
 
   ifdef LOCAL_IS_HOST_MODULE
@@ -92,8 +92,10 @@
     my_ldflags += -fsanitize=$(fsanitize_arg)
     my_ldlibs += -lrt -ldl
   else
-    my_cflags += -fsanitize-undefined-trap-on-error
-    my_cflags += -ftrap-function=abort
+    ifeq ($(filter address,$(my_sanitize)),)
+      my_cflags += -fsanitize-trap=all
+      my_cflags += -ftrap-function=abort
+    endif
     my_shared_libraries += libdl
   endif
 endif
diff --git a/tools/generate-notice-files.py b/tools/generate-notice-files.py
index 4571b70..5b13bf5 100755
--- a/tools/generate-notice-files.py
+++ b/tools/generate-notice-files.py
@@ -99,7 +99,7 @@
     # most browsers, but href's to table row ids do)
     id_table = {}
     id_count = 0
-    for value in file_hash.values():
+    for value in file_hash:
         for filename in value:
              id_table[filename] = id_count
         id_count += 1
@@ -116,7 +116,7 @@
     print >> output_file, "<ul>"
 
     # Flatten the list of lists into a single list of filenames
-    sorted_filenames = sorted(itertools.chain.from_iterable(file_hash.values()))
+    sorted_filenames = sorted(itertools.chain.from_iterable(file_hash))
 
     # Print out a nice table of contents
     for filename in sorted_filenames:
@@ -127,11 +127,11 @@
     print >> output_file, "</div><!-- table of contents -->"
     # Output the individual notice file lists
     print >>output_file, '<table cellpadding="0" cellspacing="0" border="0">'
-    for value in file_hash.values():
+    for value in file_hash:
         print >> output_file, '<tr id="id%d"><td class="same-license">' % id_table.get(value[0])
         print >> output_file, '<div class="label">Notices for file(s):</div>'
         print >> output_file, '<div class="file-list">'
-        for filename in sorted(value):
+        for filename in value:
             print >> output_file, "%s <br/>" % (SRC_DIR_STRIP_RE.sub(r"\1", filename))
         print >> output_file, "</div><!-- file-list -->"
         print >> output_file
@@ -154,10 +154,10 @@
     SRC_DIR_STRIP_RE = re.compile(input_dir + "(/.*).txt")
     output_file = open(output_filename, "wb")
     print >> output_file, file_title
-    for value in file_hash.values():
+    for value in file_hash:
       print >> output_file, "============================================================"
       print >> output_file, "Notices for file(s):"
-      for filename in sorted(value):
+      for filename in value:
         print >> output_file, SRC_DIR_STRIP_RE.sub(r"\1", filename)
       print >> output_file, "------------------------------------------------------------"
       print >> output_file, open(value[0]).read()
@@ -178,11 +178,12 @@
                 file_md5sum = md5sum(filename)
                 files_with_same_hash[file_md5sum].append(filename)
 
+    filesets = [sorted(files_with_same_hash[md5]) for md5 in sorted(files_with_same_hash.keys())]
 
     print "Combining NOTICE files into HTML"
-    combine_notice_files_html(files_with_same_hash, input_dir, html_output_file)
+    combine_notice_files_html(filesets, input_dir, html_output_file)
     print "Combining NOTICE files into text"
-    combine_notice_files_text(files_with_same_hash, input_dir, txt_output_file, file_title)
+    combine_notice_files_text(filesets, input_dir, txt_output_file, file_title)
 
 if __name__ == "__main__":
     main(args)