From: Nathaniel Shead <nathanieloshead@gmail.com>
Date: Mon, 10 Nov 2025 23:16:58 +0000 (+1100)
Subject: c++/modules: Fix ICE in instantiating_tu_local_entity [PR122628]
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=536ae8191fd28e580ed1e7ef848026a11923f513;p=thirdparty%2Fgcc.git

c++/modules: Fix ICE in instantiating_tu_local_entity [PR122628]

I'd missed a STRIP_TEMPLATE when attempting to query whether DECL was
an imported entity.

	PR c++/122628

gcc/cp/ChangeLog:

	* module.cc (instantiating_tu_local_entity): Add missing
	STRIP_TEMPLATEs.

gcc/testsuite/ChangeLog:

	* g++.dg/modules/internal-18.C: New test.

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

diff --git a/gcc/cp/module.cc b/gcc/cp/module.cc
index a52dc0c7850..da9d29b4b01 100644
--- a/gcc/cp/module.cc
+++ b/gcc/cp/module.cc
@@ -14231,8 +14231,8 @@ instantiating_tu_local_entity (tree decl)
     return false;
 
   tree origin = get_originating_module_decl (decl);
-  if (!DECL_LANG_SPECIFIC (origin)
-      || !DECL_MODULE_IMPORT_P (origin))
+  if (!DECL_LANG_SPECIFIC (STRIP_TEMPLATE (origin))
+      || !DECL_MODULE_IMPORT_P (STRIP_TEMPLATE (origin)))
     return false;
 
   /* Referencing TU-local entities from a header is generally OK.
diff --git a/gcc/testsuite/g++.dg/modules/internal-18.C b/gcc/testsuite/g++.dg/modules/internal-18.C
new file mode 100644
index 00000000000..3f9102a1d47
--- /dev/null
+++ b/gcc/testsuite/g++.dg/modules/internal-18.C
@@ -0,0 +1,9 @@
+// PR c++/122628
+// { dg-additional-options "-fmodules" }
+
+template <typename T> static void baz(T) {}
+template <typename T> static void bar(T) { baz(0); }
+
+void foo() {
+  bar(0);
+}