diff -uri seq-2.2.9/test/compiler/snc_test.plt seq-2.2.9-fix/test/compiler/snc_test.plt
--- seq-2.2.9/test/compiler/snc_test.plt	2021-05-19 13:35:39.000000000 +0200
+++ seq-2.2.9-fix/test/compiler/snc_test.plt	2023-01-27 12:15:47.642857803 +0100
@@ -51,7 +51,7 @@
   `make -s -B $prog.i`;
   my $failed = 0;
   # execute the snc and capture the output
-  my $output = `..${dirsep}..${dirsep}..${dirsep}bin${dirsep}${host_arch}${dirsep}snc $prog.i -o $prog.c 2>&1`;
+  my $output = `..${dirsep}..${dirsep}..${dirsep}bin${dirsep}${host_arch}${dirsep}snc $prog.i -o $prog.xc 2>&1`;
   # test whether it terminated normally
   my $exitsig = $? & 127;
   is ($exitsig, 0, "$prog: snc terminates normally") or $failed = 1;
@@ -61,7 +61,7 @@
     my $exitcode = $? >> 8;
     my $errors_are_expected = $tests->{$prog}->{errors} > 0;
     ok(($exitcode != 0) == $errors_are_expected, "$prog: correct exitcode");
-    ok(-e "$prog.c" == ($exitcode == 0), "$prog: success <=> creates output file");
+    ok(-e "$prog.xc" == ($exitcode == 0), "$prog: success <=> creates output file");
     my $nw = 0;
     $nw++ while ($output =~ /warning/g);
     is($nw, $tests->{$prog}->{warnings}, "$prog: number of warnings") or $failed = 1;