================
@@ -986,6 +989,14 @@ def warn_module_conflict : Warning<
InGroup<ModuleConflict>;
// C++20 modules
+def err_pp_module_name_is_macro : Error<
+ "%select{module|partition}0 name component %1 cannot be a object-like
macro">;
+def err_pp_module_expected_ident : Error<
+ "expected %select{identifier after '.' in |}0module name">;
+def err_pp_module_decl_in_header
+ : Error<"module declaration must not come from an #include directive">;
+def err_pp_cond_span_module_decl
+ : Error<"preprocessor conditionals shall not span a module declaration">;
----------------
yronglin wrote:
Does this behavior make sense?
Sorry I have another question, does it's only effective with -E mode?
```cpp
#if 0 // #1
export module m; // expected-error {{preprocessor conditionals shall not span a
module declaration}}
#else
export module m; // expected-error {{preprocessor conditionals shall not span a
module declaration}} \
// expected-error {{module declaration must occur at the start
of the translation unit}} \
// expected-note@#1 {{add 'module;'}}
#endif
```
https://github.com/llvm/llvm-project/pull/107168
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