Introduce more appropriate assertion mechanism

rust-analyzer is a long-running program, so we *should* handle assertion
failures.

See also https://www.sqlite.org/assert.html.

1 files changed, 5 insertions, 0 deletions

diff --git a/docs/dev/style.md b/docs/dev/style.md
index 9859f614820..21330948ba5 100644
--- a/docs/dev/style.md
+++ b/docs/dev/style.md
@@ -215,6 +215,11 @@ if idx >= len {
 
 **Rationale:** its useful to see the invariant relied upon by the rest of the function clearly spelled out.
 
+## Assertions
+
+Assert liberally.
+Prefer `stdx::assert_never!` to standard `assert!`.
+
 ## Getters & Setters
 
 If a field can have any value without breaking invariants, make the field public.