diff --git a/ast_to_hir.cpp b/ast_to_hir.cpp
index 0a505bf4146..8d34adf8ef4 100644
--- a/ast_to_hir.cpp
+++ b/ast_to_hir.cpp
@@ -649,12 +649,15 @@ ast_expression::hir(exec_list *instructions,
 
    case ast_ls_assign:
    case ast_rs_assign:
+      break;
 
    case ast_and_assign:
    case ast_xor_assign:
    case ast_or_assign:
+      break;
 
    case ast_conditional:
+      break;
 
    case ast_pre_inc:
    case ast_pre_dec: {