diff options
Diffstat (limited to '027trace.cc')
| -rw-r--r-- | 027trace.cc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/027trace.cc b/027trace.cc index 12cc7ca3..742432fa 100644 --- a/027trace.cc +++ b/027trace.cc @@ -12,6 +12,10 @@ TRACE, Recipe_ordinal["trace"] = TRACE; :(before "End Primitive Recipe Implementations") case TRACE: { + if (SIZE(ingredients) != 2) { + raise << current_recipe_name() << ": 'trace' takes exactly two ingredients rather than '" << current_instruction().to_string() << "'\n" << end(); + break; + } assert(is_literal(current_instruction().ingredients.at(0))); string label = current_instruction().ingredients.at(0).name; assert(is_literal(current_instruction().ingredients.at(1))); |