================
@@ -0,0 +1,58 @@
+// RUN: rm -rf %t
+// RUN: mkdir %t
+// RUN: split-file %s %t
+
+// RUN: %clang_cc1 -std=c++20 %t/cwg2947_example1.cpp -D'DOT_BAR=.bar'
-fsyntax-only -verify
+// RUN: %clang_cc1 -std=c++20 %t/cwg2947_example2.cpp
-D'MOD_ATTR=[[vendor::shiny_module]]' -fsyntax-only -verify
+// RUN: %clang_cc1 -std=c++20 %t/cwg2947_example3.cpp -fsyntax-only -verify
+// RUN: %clang_cc1 -std=c++20 %t/cwg2947_example4.cpp -fsyntax-only -verify
+// RUN: %clang_cc1 -std=c++20 %t/cwg2947_example5.cpp -fsyntax-only -verify
+// RUN: %clang_cc1 -std=c++20 %t/cwg2947_example6.cpp -fsyntax-only -verify
+// RUN: %clang_cc1 -std=c++20 %t/cwg2947_ext1.cpp -verify -E | FileCheck
%t/cwg2947_ext1.cpp
+// RUN: %clang_cc1 -std=c++20 %t/cwg2947_ext2.cpp -fsyntax-only -verify
+// RUN: %clang_cc1 -std=c++20 %t/cwg2947_ext3.cpp -fsyntax-only -verify
+
+//--- cwg2947_example1.cpp
+// #define DOT_BAR .bar
+export module foo DOT_BAR; // error: expansion of DOT_BAR; does not begin with
; or [
+// expected-error@-1 {{unexpected preprocessing token '.' after module name,
only ';' and '[' (start of attribute specifier sequence) are allowed}}
+
+//--- cwg2947_example2.cpp
+export module M MOD_ATTR; // OK
+// expected-warning@-1 {{unknown attribute 'vendor::shiny_module' ignored}}
+
+//--- cwg2947_example3.cpp
+export module a
+ .b; // error: preprocessing token after
pp-module-name is not ; or [
+// expected-error@-1 {{unexpected preprocessing token '.' after module name,
only ';' and '[' (start of attribute specifier sequence) are allowed}}
+
+//--- cwg2947_example4.cpp
+export module M [[
+ attr1,
+ attr2 ]] ; // OK
+// expected-warning@-2 {{unknown attribute 'attr1' ignored}}
+// expected-warning@-2 {{unknown attribute 'attr2' ignored}}
+
+//--- cwg2947_example5.cpp
+export module M
+ [[ attr1,
+ attr2 ]] ; // OK
+// expected-warning@-2 {{unknown attribute 'attr1' ignored}}
+// expected-warning@-2 {{unknown attribute 'attr2' ignored}}
+
+//--- cwg2947_example6.cpp
+export module M; int // expected-warning {{extra tokens after semicolon in
'module' directive}}
+ n; // OK
+
+//--- cwg2947_ext1.cpp
+// CHECK: export __preprocessed_module m; int x;
+// CHECK-NEXT: extern "C++" int *y = &x;
+export module m; int x; // expected-warning {{extra tokens after semicolon in
'module' directive}}
----------------
Endilll wrote:
```suggestion
export module m; int x;
// expected-warning@-1 {{extra tokens after semicolon in 'module' directive}}
```
https://github.com/llvm/llvm-project/pull/107168
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