diff mbox series

[pushed] c++: auto and dependent member name [PR105734]

Message ID 20220601192055.1778495-1-jason@redhat.com
State New
Headers show
Series [pushed] c++: auto and dependent member name [PR105734] | expand

Commit Message

Jason Merrill June 1, 2022, 7:20 p.m. UTC 
In r12-3643 I improved our handling of type names after . or -> when
unqualified lookup doesn't find anything, but it needs to handle auto
specially.

Tested x86_64-pc-linux-gnu, applying to trunk.

	PR c++/105734

gcc/cp/ChangeLog:

	* parser.cc (cp_parser_postfix_dot_deref_expression): Use typeof
	if the expression has auto type.

gcc/testsuite/ChangeLog:

	* g++.dg/cpp0x/auto57.C: New test.
---
 gcc/cp/parser.cc                    |  2 +-
 gcc/testsuite/g++.dg/cpp0x/auto57.C | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/g++.dg/cpp0x/auto57.C


base-commit: ae54c1b09963779c5c3914782324ff48af32e2f1
prerequisite-patch-id: f5fe205a2e35ff3b41ef11e9c72a2f2c12c0f3c5
diff mbox series

Patch

diff --git a/gcc/cp/parser.cc b/gcc/cp/parser.cc
index 0eefa740dc5..3fc73442da5 100644
--- a/gcc/cp/parser.cc
+++ b/gcc/cp/parser.cc
@@ -8262,7 +8262,7 @@  cp_parser_postfix_dot_deref_expression (cp_parser *parser,
       tree type = TREE_TYPE (postfix_expression);
       /* If we don't have a (type-dependent) object of class type, use
 	 typeof to figure out the type of the object.  */
-      if (type == NULL_TREE)
+      if (type == NULL_TREE || is_auto (type))
 	type = finish_typeof (postfix_expression);
       parser->context->object_type = type;
     }
diff --git a/gcc/testsuite/g++.dg/cpp0x/auto57.C b/gcc/testsuite/g++.dg/cpp0x/auto57.C
new file mode 100644
index 00000000000..fedcfde2f0c
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/auto57.C
@@ -0,0 +1,15 @@ 
+// PR c++/105734
+// { dg-do compile { target c++11 } }
+
+namespace N {
+  struct A { };
+  A f(A);
+}
+
+template <class T>
+void bar() {
+  auto m = f(T());
+  m.~A();
+}
+
+void foo() { bar<N::A>(); }