Fix for PR7040: Don't try to compute the LLVM type for a function where it

isn't possible to compute.

This patch is mostly refactoring; the key change is the addition of the code
starting with the comment, "Check whether the function has a computable LLVM
signature."  The solution here is essentially the same as the way the
vtable code handles such functions.

llvm-svn: 105151

1 files changed, 10 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/incomplete-member-function-pointer.cpp b/clang/test/CodeGenCXX/incomplete-member-function-pointer.cpp
new file mode 100644
index 0000000..b97e44c
--- /dev/null
+++ b/clang/test/CodeGenCXX/incomplete-member-function-pointer.cpp
@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 %s -emit-llvm-only
+// PR7040
+struct fake_tuple;
+struct connection {
+    void bar(fake_tuple);
+};
+void (connection::*a)(fake_tuple) = &connection::bar;
+void f() {
+  void (connection::*b)(fake_tuple) = &connection::bar;
+}