c++: Fix lambdas with variadic parameters and static specifier [PR119048]

	PR c++/119048

gcc/cp/ChangeLog:

	* lambda.cc (compare_lambda_sig): Only skip first parameter for
	object members.

gcc/testsuite/ChangeLog:

	* g++.dg/cpp23/static-operator-call8.C: New test.

Reviewed-by: Jason Merrill <jason@redhat.com>

diff --git a/gcc/cp/lambda.cc b/gcc/cp/lambda.cc
index 711e3b7a18e4b47f431d27677f29de9c7290c3bb..bb0aa7d0a020f174f2f096e9b44c3a1bfc4e6196 100644 (file)
--- a/gcc/cp/lambda.cc
+++ b/gcc/cp/lambda.cc
@@ -1742,8 +1742,8 @@ compare_lambda_sig (tree fn_a, tree fn_b)
       || fn_b == error_mark_node)
     return false;
 
-  for (tree args_a = TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (fn_a))),
-        args_b = TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (fn_b)));
+  for (tree args_a = FUNCTION_FIRST_USER_PARMTYPE (fn_a),
+        args_b = FUNCTION_FIRST_USER_PARMTYPE (fn_b);
        args_a || args_b;
        args_a = TREE_CHAIN (args_a), args_b = TREE_CHAIN (args_b))
     {

diff --git a/gcc/testsuite/g++.dg/cpp23/static-operator-call8.C b/gcc/testsuite/g++.dg/cpp23/static-operator-call8.C
new file mode 100644 (file)
index 0000000..46aa6b4
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp23/static-operator-call8.C
@@ -0,0 +1,6 @@
+// PR c++/119048
+// { dg-do compile { target c++23 } }
+
+int main() {
+       [] {}, [](...) static {};
+}