--- test0_delta/hello.test.orig	2023-06-30 11:16:27 UTC
+++ test0_delta/hello.test
@@ -1,6 +1,6 @@
 #!/usr/local/bin/bash
 # -*-sh-*-
-if gcc -o a.out $1 &> cmp_out; then
+if cc -o a.out $1 &> cmp_out; then
     if ! ./a.out &> run_out; then
         exit 0;                 # Success.
     fi