* Modules and using declaration: bug or feature?
@ 2023-05-08 5:18 Wilhelm Meier
0 siblings, 0 replies; only message in thread
From: Wilhelm Meier @ 2023-05-08 5:18 UTC (permalink / raw)
To: gcc-help
Hi all,
I have the following file:
m.h:
---
using test_t = unsigned char;
---
m1.cc
---
module;
#include "m.h"
export module m1;
export namespace M1 {
using ::test_t;
}
---
and m2.cc:
---
module;
export module m2;
export import m1;
export namespace M1 {
using x = test_t;
}
---
Compile the module interface unit m1.cc succeeds:
LANG=C g++ -c -std=c++23 -DNDEBUG -Os -fconcepts -fmodules-ts
-fmodule-only -xc++ m1.cc
But compiling m2.cc fails:
LANG=C g++ -c -std=c++23 -DNDEBUG -Os -fconcepts -fmodules-ts
-fmodule-only -xc++ m2.cc
m2.cc:8:19: error: 'test_t' does not name a type
8 | using x = test_t;
| ^~~~~~
m2.cc:3:8: warning: not writing module 'm2' due to errors
3 | export module m2;
| ^~~~~~
Is this a bug or a feature?
--
Wilhelm
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