re PR c++/52269 ([C++11] Body of constexpr function templates instantiated too eagerl...

	PR c++/52269
	* g++.dg/cpp0x/constexpr-decltype4.C: New test.

From-SVN: r272083

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index c7846a4addbd136750230a65583caec9014d4769..a2012ae73afecbf63d1e23aacf4759214e617c18 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,10 @@
+2019-06-08  Marek Polacek  <polacek@redhat.com>
+
+       PR c++/52269
+       * g++.dg/cpp0x/constexpr-decltype4.C: New test.
+
 2019-06-08  Thomas Koenig  <tkoenig@gcc.gnu.org>
-       Tomáš Trnka  <trnka@scm.com>
+           Tomáš Trnka  <trnka@scm.com>
 
        PR fortran/90744
        * gfortran.dg/deferred_character_33.f90: New test.

diff --git a/gcc/testsuite/g++.dg/cpp0x/constexpr-decltype4.C b/gcc/testsuite/g++.dg/cpp0x/constexpr-decltype4.C
new file mode 100644 (file)
index 0000000..64af90b
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/constexpr-decltype4.C
@@ -0,0 +1,21 @@
+// PR c++/52269
+// { dg-do compile { target c++11 } }
+
+template<typename T>
+int f(T x)
+{
+  return x.get();
+}
+
+// O.K. The body of `f' is not required.
+decltype(f(0)) a;
+
+template<typename T>
+constexpr int g(T x)
+{
+  return x.get();
+}
+
+// Seems to instantiate the body of `g'
+// and results in an error.
+decltype(g(0)) b;