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* [gcc r13-2969] c++: implicit lookup of std::initializer_list [PR102576]
@ 2022-09-29 20:27 Patrick Palka
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From: Patrick Palka @ 2022-09-29 20:27 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:c2ee70f20de8133a88553270073226b0f3f55f62
commit r13-2969-gc2ee70f20de8133a88553270073226b0f3f55f62
Author: Patrick Palka <ppalka@redhat.com>
Date: Thu Sep 29 16:27:30 2022 -0400
c++: implicit lookup of std::initializer_list [PR102576]
Here the lookup for the implicit use of std::initializer_list fails
because we do it using get_namespace_binding, which isn't import aware.
Fix this by using lookup_qualified_name instead.
PR c++/102576
gcc/cp/ChangeLog:
* pt.cc (listify): Use lookup_qualified_name instead of
get_namespace_binding.
gcc/testsuite/ChangeLog:
* g++.dg/modules/pr102576_a.H: New test.
* g++.dg/modules/pr102576_b.C: New test.
Diff:
---
gcc/cp/pt.cc | 5 +++--
gcc/testsuite/g++.dg/modules/pr102576_a.H | 5 +++++
gcc/testsuite/g++.dg/modules/pr102576_b.C | 9 +++++++++
3 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/gcc/cp/pt.cc b/gcc/cp/pt.cc
index 0f92374f19a..258f76d6e47 100644
--- a/gcc/cp/pt.cc
+++ b/gcc/cp/pt.cc
@@ -29161,9 +29161,10 @@ finish_concept_definition (cp_expr id, tree init)
static tree
listify (tree arg)
{
- tree std_init_list = get_namespace_binding (std_node, init_list_identifier);
+ tree std_init_list = lookup_qualified_name (std_node, init_list_identifier);
- if (!std_init_list || !DECL_CLASS_TEMPLATE_P (std_init_list))
+ if (std_init_list == error_mark_node
+ || !DECL_CLASS_TEMPLATE_P (std_init_list))
{
gcc_rich_location richloc (input_location);
maybe_add_include_fixit (&richloc, "<initializer_list>", false);
diff --git a/gcc/testsuite/g++.dg/modules/pr102576_a.H b/gcc/testsuite/g++.dg/modules/pr102576_a.H
new file mode 100644
index 00000000000..87ba9b52031
--- /dev/null
+++ b/gcc/testsuite/g++.dg/modules/pr102576_a.H
@@ -0,0 +1,5 @@
+// PR c++/102576
+// { dg-additional-options -fmodule-header }
+// { dg-module-cmi {} }
+
+#include <initializer_list>
diff --git a/gcc/testsuite/g++.dg/modules/pr102576_b.C b/gcc/testsuite/g++.dg/modules/pr102576_b.C
new file mode 100644
index 00000000000..10251ed5304
--- /dev/null
+++ b/gcc/testsuite/g++.dg/modules/pr102576_b.C
@@ -0,0 +1,9 @@
+// PR c++/102576
+// { dg-additional-options -fmodules-ts }
+
+import "pr102576_a.H";
+
+int main() {
+ for (int i : {1, 2, 3})
+ ;
+}
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