From: Nathaniel Shead <nathanieloshead@gmail.com>
Date: Sat, 1 Nov 2025 11:59:33 +0000 (+1100)
Subject: c++/modules: Stream BASELINK_OPTYPE [PR122381]
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b466450c6d502557921f03527cc165fb3402aaa9;p=thirdparty%2Fgcc.git

c++/modules: Stream BASELINK_OPTYPE [PR122381]

This is used in template conversion operators to determine what type the
user requested.

	PR c++/122381

gcc/cp/ChangeLog:

	* module.cc (trees_out::core_vals): Write BASELINK_OPTYPE (aka
	TREE_CHAIN).
	(trees_in::core_vals): Read it.

gcc/testsuite/ChangeLog:

	* g++.dg/modules/convop-2_a.H: New test.
	* g++.dg/modules/convop-2_b.C: New test.

Signed-off-by: Nathaniel Shead <nathanieloshead@gmail.com>
---

diff --git a/gcc/cp/module.cc b/gcc/cp/module.cc
index 81357a86cfe..31f5c8146d6 100644
--- a/gcc/cp/module.cc
+++ b/gcc/cp/module.cc
@@ -6733,6 +6733,7 @@ trees_out::core_vals (tree t)
       WT (((lang_tree_node *)t)->baselink.binfo);
       WT (((lang_tree_node *)t)->baselink.functions);
       WT (((lang_tree_node *)t)->baselink.access_binfo);
+      WT (((lang_tree_node *)t)->baselink.common.chain);
       break;
 
     case CONSTRAINT_INFO:
@@ -7302,6 +7303,7 @@ trees_in::core_vals (tree t)
       RT (((lang_tree_node *)t)->baselink.binfo);
       RTU (((lang_tree_node *)t)->baselink.functions);
       RT (((lang_tree_node *)t)->baselink.access_binfo);
+      RT (((lang_tree_node *)t)->baselink.common.chain);
       break;
 
     case CONSTRAINT_INFO:
diff --git a/gcc/testsuite/g++.dg/modules/convop-2_a.H b/gcc/testsuite/g++.dg/modules/convop-2_a.H
new file mode 100644
index 00000000000..62bb2101f69
--- /dev/null
+++ b/gcc/testsuite/g++.dg/modules/convop-2_a.H
@@ -0,0 +1,10 @@
+// PR c++/122381
+// { dg-additional-options "-fmodule-header" }
+// { dg-module-cmi {} }
+
+template <typename T> struct color_ref {
+  operator int() const { return 0; }
+  int foo(color_ref x) {
+    return x.operator int();
+  }
+};
diff --git a/gcc/testsuite/g++.dg/modules/convop-2_b.C b/gcc/testsuite/g++.dg/modules/convop-2_b.C
new file mode 100644
index 00000000000..d1e829ec70c
--- /dev/null
+++ b/gcc/testsuite/g++.dg/modules/convop-2_b.C
@@ -0,0 +1,5 @@
+// PR c++/122381
+// { dg-additional-options "-fmodules" }
+
+import "convop-2_a.H";
+template struct color_ref<int>;