C, C++, do not recurse in anon symbols on addition

sphinx/domains/c.py

@@ -1675,7 +1675,7 @@ class Symbol:
                                            onMissingQualifiedSymbol,
                                            ancestorLookupType=None,
                                            matchSelf=False,
-                                           recurseInAnon=True,
+                                           recurseInAnon=False,
                                            searchInSiblings=False)
         assert lookupResult is not None  # we create symbols all the way, so that can't happen
         symbols = list(lookupResult.symbols)

sphinx/domains/cpp.py

@@ -4159,7 +4159,7 @@ class Symbol:
                                            ancestorLookupType=None,
                                            templateShorthand=False,
                                            matchSelf=False,
-                                           recurseInAnon=True,
+                                           recurseInAnon=False,
                                            correctPrimaryTemplateArgs=True,
                                            searchInSiblings=False)
         assert lookupResult is not None  # we create symbols all the way, so that can't happen

tests/roots/test-domain-c/anon-dup-decl.rst

@@ -0,0 +1,5 @@
+.. c:struct:: anon_dup_decl
+
+	.. c:struct:: @a.A
+	.. c:struct:: @b.A
+	.. c:struct:: A

tests/roots/test-domain-cpp/anon-dup-decl.rst

@@ -0,0 +1,4 @@
+.. cpp:namespace:: anon_dup_decl
+.. cpp:class:: @a::A
+.. cpp:class:: @b::A
+.. cpp:class:: A

tests/test_domain_c.py

@@ -474,6 +474,15 @@ def test_build_domain_c(app, status, warning):
     assert len(ws) == 0
 
 
+@pytest.mark.sphinx(testroot='domain-c', confoverrides={'nitpicky': True})
+def test_build_domain_c_anon_dup_decl(app, status, warning):
+    app.builder.build_all()
+    ws = filter_warnings(warning, "anon-dup-decl")
+    assert len(ws) == 2
+    assert "WARNING: c:identifier reference target not found: @a" in ws[0]
+    assert "WARNING: c:identifier reference target not found: @b" in ws[1]
+
+
 def test_cfunction(app):
     text = (".. c:function:: PyObject* "
             "PyType_GenericAlloc(PyTypeObject *type, Py_ssize_t nitems)")

tests/test_domain_cpp.py

@@ -913,6 +913,15 @@ def test_build_domain_cpp_backslash_ok(app, status, warning):
     assert "WARNING: Parsing of expression failed. Using fallback parser." in ws[0]
 
 
+@pytest.mark.sphinx(testroot='domain-cpp', confoverrides={'nitpicky': True})
+def test_build_domain_cpp_anon_dup_decl(app, status, warning):
+    app.builder.build_all()
+    ws = filter_warnings(warning, "anon-dup-decl")
+    assert len(ws) == 2
+    assert "WARNING: cpp:identifier reference target not found: @a" in ws[0]
+    assert "WARNING: cpp:identifier reference target not found: @b" in ws[1]
+
+
 @pytest.mark.sphinx(testroot='domain-cpp')
 def test_build_domain_cpp_misuse_of_roles(app, status, warning):
     app.builder.build_all()