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fix problem with specializing rigids

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This commit is contained in:
Folkert 2020-10-14 02:21:33 +02:00
parent 6aaba98d31
commit f07fe1879b
5 changed files with 28 additions and 9 deletions
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5
compiler/mono/src/ir.rs
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@ -1365,10 +1365,12 @@ fn specialize_external<'a>(
// unify the called function with the specialized signature, then specialize the function body
let snapshot = env.subs.snapshot();
let cache_snapshot = layout_cache.snapshot();
let unified = roc_unify::unify::unify(env.subs, annotation, fn_var);
debug_assert!(matches!(unified, roc_unify::unify::Unified::Success(_)));
let is_valid = matches!(unified, roc_unify::unify::Unified::Success(_));
debug_assert!(is_valid);
let specialized_body = from_can(env, body, procs, layout_cache);
@ -1376,6 +1378,7 @@ fn specialize_external<'a>(
build_specialized_proc_from_var(env, layout_cache, pattern_symbols, fn_var)?;
// reset subs, so we don't get type errors when specializing for a different signature
layout_cache.rollback_to(cache_snapshot);
env.subs.rollback_to(snapshot);
// TODO WRONG