re PR c++/70229 (error: constexpr constructor does not have empty body)

	PR c++/70229
	* constexpr.c (check_constexpr_ctor_body_1): Allow typedef
	declarations.

	* g++.dg/cpp0x/constexpr-ctor19.C: New test.

From-SVN: r239115

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 38ae44377866249dc4d3f91d227ca6d63067c7df..2a993701fd684035a121904ca73aa9ffc4cecb0b 100644 (file)
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,9 @@
+2016-08-04  Marek Polacek  <polacek@redhat.com>
+
+       PR c++/70229
+       * constexpr.c (check_constexpr_ctor_body_1): Allow typedef
+       declarations.
+
 2016-08-01  Jason Merrill  <jason@redhat.com>
 
        * mangle.c (mangle_decl): Warn about mangled name change even if

diff --git a/gcc/cp/constexpr.c b/gcc/cp/constexpr.c
index edade4894014405120d29e030a5846006ba490a1..41665c5a36e1828e8a069bf0ccba55e46c6de177 100644 (file)
--- a/gcc/cp/constexpr.c
+++ b/gcc/cp/constexpr.c
@@ -425,7 +425,8 @@ check_constexpr_ctor_body_1 (tree last, tree list)
   switch (TREE_CODE (list))
     {
     case DECL_EXPR:
-      if (TREE_CODE (DECL_EXPR_DECL (list)) == USING_DECL)
+      if (TREE_CODE (DECL_EXPR_DECL (list)) == USING_DECL
+         || TREE_CODE (DECL_EXPR_DECL (list)) == TYPE_DECL)
        return true;
       return false;
 

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index df48f68924dd86cc590d2d79d8780d82868a77d0..b5d8ee5dc33c09395bcaa395f5dd86490d24a3a1 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2016-08-04  Marek Polacek  <polacek@redhat.com>
+
+       PR c++/70229
+       * g++.dg/cpp0x/constexpr-ctor19.C: New test.
+
 2016-08-04  Richard Biener  <rguenther@suse.de>
 
        PR middle-end/71984

diff --git a/gcc/testsuite/g++.dg/cpp0x/constexpr-ctor19.C b/gcc/testsuite/g++.dg/cpp0x/constexpr-ctor19.C
new file mode 100644 (file)
index 0000000..f5ef053
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/constexpr-ctor19.C
@@ -0,0 +1,42 @@
+// PR c++/70229
+// { dg-do compile { target c++11 } }
+
+template <class>
+class S {
+  constexpr S (void) {
+    typedef int T;
+  }
+};
+
+template <class>
+class S2 {
+  constexpr S2 (void) {
+    ;
+  }
+};
+
+template <class>
+class S3 {
+  constexpr S3 (void) {
+    typedef enum { X } E;
+  } // { dg-error "does not have empty body" "" { target c++11_only } }
+};
+
+template <class>
+class S4 {
+  constexpr S4 (void) {
+    typedef struct { int j; } U;
+  } // { dg-error "does not have empty body" "" { target c++11_only } }
+};
+
+struct V
+{
+  int i;
+};
+
+template <class>
+class S5 {
+  constexpr S5 (void) {
+    typedef V W;
+  }
+};