diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7a9f300a4dfc..d41058bd0b18 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -3,6 +3,10 @@
 	* lra-constraints.c (choose_split_class): Add ATTRIBUTE_UNUSED to
 	hard_reg_class.
 
+	PR target/52498
+	* vmsdbgout.c (vmsdbgout_write_source_line): Comment out names of
+	last two parameters.
+
 2012-10-30  Alexandre Oliva <aoliva@redhat.com>
 
 	PR debug/54551
diff --git a/gcc/vmsdbgout.c b/gcc/vmsdbgout.c
index 29eaf50df267..5472ac54ee97 100644
--- a/gcc/vmsdbgout.c
+++ b/gcc/vmsdbgout.c
@@ -1371,7 +1371,7 @@ lookup_filename (const char *file_name)
 
 static void
 vmsdbgout_write_source_line (unsigned line, const char *filename,
-                             int discriminator, bool is_stmt)
+                             int /* discriminator */, bool /* is_stmt */)
 {
   dst_line_info_ref line_info;