diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index 07c55b1..8790902 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -5674,8 +5674,10 @@ aarch64_classify_address (struct aarch64_address_info *info,
       && (code != POST_INC && code != REG))
     return false;
 
-  gcc_checking_assert (GET_MODE (x) == VOIDmode
-		       || SCALAR_INT_MODE_P (GET_MODE (x)));
+  /* Wrong mode for an address expr.  */
+  if (GET_MODE (x) != VOIDmode
+      && ! SCALAR_INT_MODE_P (GET_MODE (x)))
+    return false;
 
   switch (code)
     {