Experiment with generating type variable names in a repeatable way

This results in much better error messages, as we can pick readable
names that make sense, and should hopefully make the re-writer more
robust.

1 files changed, 25 insertions, 0 deletions

diff --git a/test/typecheck/pass/tyvar_names.sail b/test/typecheck/pass/tyvar_names.sail
new file mode 100644
index 00000000..eb31307e
--- /dev/null
+++ b/test/typecheck/pass/tyvar_names.sail
@@ -0,0 +1,25 @@
+default Order dec
+
+$include <prelude.sail>
+
+$option -dmagic_hash
+
+function main((): unit) -> unit = {
+  let x = (3 + 3) : {'n, 'n == 6. int('n)};
+  _check(x : int('x#0));
+  let y = (2 + 4) : {'n, 'n == 6. int('n)};
+  _check(y : int('y#0));
+  let x = 26 : {'n, 'n == 26. int('n)};
+  _check(x : int('x#1));
+  ()
+}
+
+function main2((): unit) -> unit = {
+  let x = (3 + 3) : {'n, 'n == 6. int('n)};
+  _check(x : int('x#0));
+  let y = (2 + 4) : {'n, 'n == 6. int('n)};
+  _check(y : int('y#0));
+  let x = 26 : {'n, 'n == 26. int('n)};
+  _check(x : int('x#1));
+  ()
+}
\ No newline at end of file