6719 - error-checking for 'index' instructions

1000+ LoC spent; just 300+ excluding tests.

Still one known gap; we don't check the entirety of an array's element
type if it's a compound. So far we just check if say both sides start with
'addr'. Obviously that's not good enough.

1 files changed, 0 insertions, 0 deletions

diff --git a/apps/sigils b/apps/sigils
index 941fd4ac..7fe34f28 100755
--- a/apps/sigils
+++ b/apps/sigils
Binary files differ