Number fields within procedures with a depth-first numbering system

src/checker.cpp

@@ -358,6 +358,10 @@ gb_internal void check_open_scope(CheckerContext *c, Ast *node) {
 		scope->flags |= ScopeFlag_Type;
 		break;
 	}
+	if (c->decl && c->decl->proc_lit) {
+		// Number the scopes within a procedure body depth-first
+		scope->index = c->decl->scope_index++;
+	}
 	c->scope = scope;
 	c->state_flags |= StateFlag_bounds_check;
 }

src/checker.hpp

@@ -229,6 +229,8 @@ struct DeclInfo {
 
 	Array<BlockLabel> labels;
 
+	i32 scope_index;
+
 	Array<VariadicReuseData> variadic_reuses;
 	i64 variadic_reuse_max_bytes;
 	i64 variadic_reuse_max_align;
@@ -273,6 +275,8 @@ struct Scope {
 	std::atomic<Scope *> next;
 	std::atomic<Scope *> head_child;
 
+	i32 index; // within a procedure
+
 	RwMutex mutex;
 	StringMap<Entity *> elements;
 	PtrSet<Scope *> imported;

src/name_canonicalization.cpp

@@ -464,7 +464,10 @@ gb_internal void write_canonical_entity_name(TypeWriter *w, Entity *e) {
 		if (s->decl_info != nullptr && s->decl_info->entity)  {
 			Entity *parent = s->decl_info->entity;
 			write_canonical_parent_prefix(w, parent);
-			type_writer_append_fmt(w, CANONICAL_TYPE_SEPARATOR "[%d]", e->token.pos.offset);
+			if (e->scope->index > 0) {
+				type_writer_append_fmt(w, CANONICAL_TYPE_SEPARATOR "[%d]", e->scope->index);
+			}
+			// type_writer_append_fmt(w, CANONICAL_TYPE_SEPARATOR "[%d]", e->token.pos.offset);
 
 			goto write_base_name;
 		} else if ((s->flags & ScopeFlag_File) && s->file != nullptr) {