diff --git a/gcc/gimple-ssa-warn-access.cc b/gcc/gimple-ssa-warn-access.cc
index 5df97a6473a02f38bdbae076b129963a6b31af54..5a359587ed3868117123fc5c34600629c5df8407 100644
--- a/gcc/gimple-ssa-warn-access.cc
+++ b/gcc/gimple-ssa-warn-access.cc
@@ -2433,7 +2433,7 @@ maybe_warn_alloc_args_overflow (gimple *stmt, const tree args[2],
 	}
     }
 
-  if (!argrange[0])
+  if (!argrange[0][0])
     return;
 
   /* For a two-argument alloc_size, validate the product of the two