authorgravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2017-11-09 11:30:39-05:00
committergravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2017-11-09 11:30:39-05:00
log7ea669e04c9314f17ce296c7521ffec2ff8575e9
tree4e272dd83789bc4f24506f960c6e0486d6ce6cfa
parent4f8c26d2c605f24cdeb1a4c7154662b2552640ef

fix parameter of extern var args not type checked

closes #601

2 files changed, 18 insertions(+), 1 deletions(-)

src/ir.cpp+10-1
......@@ -10311,8 +10311,17 @@ static TypeTableEntry *ir_analyze_fn_call(IrAnalyze *ira, IrInstructionCall *cal
1031110311{
1031210312 FnTypeId *fn_type_id = &fn_type->data.fn.fn_type_id;
1031310313 size_t first_arg_1_or_0 = first_arg_ptr ? 1 : 0;
10314 size_t var_args_1_or_0 = fn_type_id->is_var_args ? 1 : 0;
10314
10315 // for extern functions, the var args argument is not counted.
10316 // for zig functions, it is.
10317 size_t var_args_1_or_0;
10318 if (fn_type_id->cc == CallingConventionUnspecified) {
10319 var_args_1_or_0 = fn_type_id->is_var_args ? 1 : 0;
10320 } else {
10321 var_args_1_or_0 = 0;
10322 }
1031510323 size_t src_param_count = fn_type_id->param_count - var_args_1_or_0;
10324
1031610325 size_t call_param_count = call_instruction->arg_count + first_arg_1_or_0;
1031710326 AstNode *source_node = call_instruction->base.source_node;
1031810327
test/compile_errors.zig+8
......@@ -2335,4 +2335,12 @@ pub fn addCases(cases: &tests.CompileErrorContext) {
23352335 \\const Foo = enum {};
23362336 ,
23372337 ".tmp_source.zig:2:26: error: member index 0 out of bounds; 'Foo' has 0 members");
2338
2339 cases.add("calling var args extern function, passing array instead of pointer",
2340 \\export fn entry() {
2341 \\ foo("hello");
2342 \\}
2343 \\pub extern fn foo(format: &const u8, ...);
2344 ,
2345 ".tmp_source.zig:2:9: error: expected type '&const u8', found '[5]u8'");
23382346}