[C++ PATCH] Add test for c++/77548

[Marek Polacek]

Continuing scouring older C++ PRs.  This one ICEd but was fixed by r240098;
let's make sure we don't re-introduce that bug.

Tested x86_64-linux, applying to trunk.

2019-06-08  Marek Polacek  <pola...@redhat.com>

        PR c++/77548
        * g++.dg/other/pr77548.C: New test.

diff --git gcc/testsuite/g++.dg/other/pr77548.C 
gcc/testsuite/g++.dg/other/pr77548.C
new file mode 100644
index 00000000000..842a9e9d28b
--- /dev/null
+++ gcc/testsuite/g++.dg/other/pr77548.C
@@ -0,0 +1,9 @@
+// PR c++/77548
+// { dg-do compile }
+// { dg-options "" }
+
+struct S
+{ 
+  int f (void) { return 0; }
+  int f (int)  { return f ? : 1; } // { dg-error "cannot resolve overloaded 
function" }
+};