Tested on x86_64-pc-linux-gnu, pushing to trunk.
-- >8 --
This issue was fixed by r15-2003-gd6bf4b1c932211, but seems worth adding
to the testsuite.
PR c++/115798
gcc/testsuite/ChangeLog:
* g++.dg/modules/using-26_a.C: New test.
* g++.dg/modules/using-26_b.C: New test.
* g++.dg/modules/using-26_c.C: New test.
Signed-off-by: Nathaniel Shead <nathanielosh...@gmail.com>
---
gcc/testsuite/g++.dg/modules/using-26_a.C | 15 +++++++++++++++
gcc/testsuite/g++.dg/modules/using-26_b.C | 10 ++++++++++
gcc/testsuite/g++.dg/modules/using-26_c.C | 9 +++++++++
3 files changed, 34 insertions(+)
create mode 100644 gcc/testsuite/g++.dg/modules/using-26_a.C
create mode 100644 gcc/testsuite/g++.dg/modules/using-26_b.C
create mode 100644 gcc/testsuite/g++.dg/modules/using-26_c.C
diff --git a/gcc/testsuite/g++.dg/modules/using-26_a.C
b/gcc/testsuite/g++.dg/modules/using-26_a.C
new file mode 100644
index 00000000000..adab83d4243
--- /dev/null
+++ b/gcc/testsuite/g++.dg/modules/using-26_a.C
@@ -0,0 +1,15 @@
+// PR c++/115798
+// { dg-additional-options "-fmodules-ts" }
+// { dg-module-cmi base }
+
+module;
+#include <cstdint>
+export module base;
+
+export {
+ using ::int8_t;
+}
+
+export namespace std {
+ using std::int8_t;
+}
diff --git a/gcc/testsuite/g++.dg/modules/using-26_b.C
b/gcc/testsuite/g++.dg/modules/using-26_b.C
new file mode 100644
index 00000000000..06ed599df41
--- /dev/null
+++ b/gcc/testsuite/g++.dg/modules/using-26_b.C
@@ -0,0 +1,10 @@
+// PR c++/115798
+// { dg-additional-options "-fmodules-ts" }
+// { dg-module-cmi xstd }
+
+export module xstd;
+import base;
+
+export namespace std {
+ using std::int8_t;
+}
diff --git a/gcc/testsuite/g++.dg/modules/using-26_c.C
b/gcc/testsuite/g++.dg/modules/using-26_c.C
new file mode 100644
index 00000000000..68f45cacb82
--- /dev/null
+++ b/gcc/testsuite/g++.dg/modules/using-26_c.C
@@ -0,0 +1,9 @@
+// PR c++/115798
+// { dg-additional-options "-fmodules-ts" }
+
+import xstd;
+import base;
+
+int main() {
+ static_assert(__is_same(int8_t, std::int8_t));
+}
--
2.43.2
