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stage1: Make the parser reject extern fn with body

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LemonBoy 2020-02-18 22:53:03 +01:00 committed by Andrew Kelley
parent 95a71e29f8
commit a6b74cdd38
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2 changed files with 11 additions and 0 deletions
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3
src/parser.cpp
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@ -689,6 +689,9 @@ static AstNode *ast_parse_top_level_decl(ParseContext *pc, VisibMod visib_mod, B
AstNode *res = fn_proto;
if (body != nullptr) {
if (fn_proto->data.fn_proto.is_extern) {
ast_error(pc, first, "Extern functions have no body");
}
res = ast_create_node_copy_line_info(pc, NodeTypeFnDef, fn_proto);
res->data.fn_def.fn_proto = fn_proto;
res->data.fn_def.body = body;

8
test/compile_errors.zig
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@ -12,6 +12,14 @@ pub fn addCases(cases: *tests.CompileErrorContext) void {
"tmp.zig:1:11: error: use of undeclared identifier 'B'",
});
cases.addTest("reject extern function definitions with body",
\\extern "c" fn definitelyNotInLibC(a: i32, b: i32) i32 {
\\ return a + b;
\\}
, &[_][]const u8{
"tmp.zig:1:1: error: Extern functions have no body",
});
cases.addTest("duplicate field in anonymous struct literal",
\\export fn entry() void {
\\ const anon = .{