Changeset 85a95cc for tests/linking/mangling/lib.cfa

Timestamp:

Mar 13, 2023, 6:25:27 PM (16 months ago)

Author:

Peter A. Buhr <pabuhr@…>

Branches:

ADT, ast-experimental, master

Children:

02b1ac6

Parents:

1cdc052

Message:

add test for problem with anonymous naming across compilation units

File:

• tests/linking/mangling/lib.cfa (modified) (1 diff)

tests/linking/mangling/lib.cfa

@@ -3 +3 @@
 name_but_a_typedefed_t a_typedefed_global;
 
-struct {
-        int some_int;
-        int some_other_int;
-} a_global_with_no_type;
+// Must be extern C to prevent name mangling.
+extern "C" {
+        // This declaration is necessary to create an instance of a_global_with_no_type.
+        // typeof is a trick to get a_global_with_no_type's type because its type is anonymous.
+        // Otherwise C generates conflicting types for a_global_with_no_type in .h and .c
+        // because C uses name equivalence and the two anonymous types cannot have the same name.
+        typeof(a_global_with_no_type) a_global_with_no_type;
+}