zig

commit ffb4852012509327c646c9899259e894965b2259 (tree)
parent a3de550d3bf020fd68e1331d3cb8b7b422894f96
Author: Andrew Kelley <superjoe30@gmail.com>
Date:   Fri,  7 Apr 2017 00:33:19 -0400

add compile error for the bug of unable to call var ags at compile time

See #313

Diffstat:
M
src/ir.cpp
 | 
7
+++++++
M
test/cases/var_args.zig
 | 
1
+

2 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/src/ir.cpp b/src/ir.cpp
@@ -8252,6 +8252,13 @@ static TypeTableEntry *ir_analyze_fn_call(IrAnalyze *ira, IrInstructionCall *cal
                 return ira->codegen->builtin_types.entry_invalid;
         }
 
+        if (fn_proto_node->data.fn_proto.is_var_args) {
+            ir_add_error(ira, &call_instruction->base,
+                    buf_sprintf("compiler bug: unable to call var args function at compile time. https://github.com/andrewrk/zig/issues/313"));
+            return ira->codegen->builtin_types.entry_invalid;
+        }
+
+
         for (size_t call_i = 0; call_i < call_instruction->arg_count; call_i += 1) {
             IrInstruction *old_arg = call_instruction->args[call_i]->other;
             if (type_is_invalid(old_arg->value.type))
diff --git a/test/cases/var_args.zig b/test/cases/var_args.zig
@@ -37,6 +37,7 @@ test "runtime parameter before var args" {
     assert(extraFn(10, false) == 1);
     assert(extraFn(10, false, true) == 2);
 
+    // TODO issue #313
     //comptime {
     //    assert(extraFn(10) == 0);
     //    assert(extraFn(10, false) == 1);