Implement a hack intended to allow Clang to parse libstdc++ 4.5's

headers, which use C++0x generalized initializer lists. Per PR7069, it
appears that the only use is as the return type of a function, so this
commit enables this extension just in that narrow case. If it's enough
for libstdc++ 4.5, or if it can be trivially extended to work with
libstdc++ 4.5, we'll keep it. Otherwise, or if this breaks anything,
we'll revert and wait for the real feature.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127507 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 18 insertions, 0 deletions

diff --git a/test/SemaCXX/cxx0x-return-init-list.cpp b/test/SemaCXX/cxx0x-return-init-list.cpp
new file mode 100644
index 0000000000..2005a7f9f6
--- /dev/null
+++ b/test/SemaCXX/cxx0x-return-init-list.cpp
@@ -0,0 +1,18 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+// This test checks for a teeny tiny subset of the functionality in
+// the C++0x generalized initializer lists feature, which happens to
+// be used in libstdc++ 4.5. We accept only this syntax so that Clang
+// can handle the libstdc++ 4.5 headers.
+
+int test0(int i) {
+  return { i }; // expected-warning{{generalized initializer lists are a C++0x extension unsupported in Clang}}
+}
+
+template<typename T, typename U>
+T test1(U u) {
+  return { u }; // expected-warning{{generalized initializer lists are a C++0x extension unsupported in Clang}}
+}
+
+template int test1(char);
+template long test1(int);