diff --git a/gcc/asan.cc b/gcc/asan.cc
index f56d084bc7a..2424cf69ef1 100644
--- a/gcc/asan.cc
+++ b/gcc/asan.cc
@@ -3287,7 +3287,17 @@ asan_add_global (tree decl, tree type, vec<constructor_elt, va_gc> *v)
     pp_string (&asan_pp, "<unknown>");
   str_cst = asan_pp_string (&asan_pp);
 
-  pp_string (&module_name_pp, main_input_filename);
+  if (!in_lto_p)
+    pp_string (&module_name_pp, main_input_filename);
+  else
+    {
+      const_tree tu = get_ultimate_context ((const_tree)decl);
+      if (tu != NULL_TREE)
+	pp_string (&module_name_pp, IDENTIFIER_POINTER (DECL_NAME (tu)));
+      else
+	pp_string (&module_name_pp, aux_base_name);
+    }
+
   module_name_cst = asan_pp_string (&module_name_pp);
 
   if (asan_needs_local_alias (decl))
diff --git a/gcc/testsuite/c-c++-common/asan/global-overflow-1.c b/gcc/testsuite/c-c++-common/asan/global-overflow-1.c
index b97801da2b7..7e167cee67a 100644
--- a/gcc/testsuite/c-c++-common/asan/global-overflow-1.c
+++ b/gcc/testsuite/c-c++-common/asan/global-overflow-1.c
@@ -26,4 +26,4 @@ int main() {
 /* { dg-output "READ of size 1 at 0x\[0-9a-f\]+ thread T0.*(\n|\r\n|\r)" } */
 /* { dg-output "    #0 0x\[0-9a-f\]+ +(in _*main (\[^\n\r]*global-overflow-1.c:20|\[^\n\r]*:0|\[^\n\r]*\\+0x\[0-9a-z\]*)|\[(\])\[^\n\r]*(\n|\r\n|\r).*" } */
 /* { dg-output "0x\[0-9a-f\]+ is located 0 bytes after global variable" } */
-/* { dg-output ".*YYY\[^\n\r]* of size 10\[^\n\r]*(\n|\r\n|\r)" } */
+/* { dg-output ".*YYY\[^\n\r]*asan/global-overflow-1.c:15:15'\[^\n\r]*of size 10\[^\n\r]*(\n|\r\n|\r)" } */