Merge from trunk revision 257954.gccgo

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gccgo@257955 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 14 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/cpp1z/constexpr-if14.C b/gcc/testsuite/g++.dg/cpp1z/constexpr-if14.C
new file mode 100644
index 00000000000..f6cc39a0c2f
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp1z/constexpr-if14.C
@@ -0,0 +1,14 @@
+// PR c++/84421
+// { dg-options -std=c++17 }
+
+struct A{
+  constexpr operator bool() const { return true; }
+};
+
+int main(){
+  auto f = [](auto v){
+    if constexpr(v){}
+  };
+  A a;
+  f(a);
+}