diff --git a/test/codegen/bin_expr.c b/test/codegen/bin_expr.c
index 2bb6dda7..2cb30395 100644
--- a/test/codegen/bin_expr.c
+++ b/test/codegen/bin_expr.c
@@ -11,5 +11,6 @@ int main() {
   __builtin_print(0 && 2);
   __builtin_print(5 || 0);
   __builtin_print(0 || 0);
+  __builtin_print((1, 2));
   return 0;
 }
diff --git a/test/codegen/bin_expr.exp b/test/codegen/bin_expr.exp
index af817bcf..44f2c82c 100644
--- a/test/codegen/bin_expr.exp
+++ b/test/codegen/bin_expr.exp
@@ -10,3 +10,4 @@
 0
 1
 0
+2
diff --git a/test/codegen/comma_expr.c b/test/codegen/comma_expr.c
new file mode 100644
index 00000000..c69e3db8
--- /dev/null
+++ b/test/codegen/comma_expr.c
@@ -0,0 +1,7 @@
+int main() {
+  int i;
+  int* p;
+  __builtin_print((i = 3, p = &i, i));
+  __builtin_print(*p);
+  return 0;
+}
diff --git a/test/codegen/comma_expr.exp b/test/codegen/comma_expr.exp
new file mode 100644
index 00000000..a5c88062
--- /dev/null
+++ b/test/codegen/comma_expr.exp
@@ -0,0 +1,2 @@
+3
+3