Be sure to use the standard substitutions when mangling the names of

vtables, VTTs, and construction vtables. Fixes PR7201.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104675 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 41 insertions, 3 deletions

diff --git a/test/CodeGenCXX/mangle-subst-std.cpp b/test/CodeGenCXX/mangle-subst-std.cpp
index 062610bd74..4c15eaac88 100644
--- a/test/CodeGenCXX/mangle-subst-std.cpp
+++ b/test/CodeGenCXX/mangle-subst-std.cpp
@@ -1,5 +1,16 @@
 // RUN: %clang_cc1 -emit-llvm %s -o - -triple=x86_64-apple-darwin9 | FileCheck %s
 
+// Check mangling of Vtables, VTTs, and construction vtables that
+// involve standard substitutions.
+
+// CHECK: @_ZTVSd = weak_odr constant 
+// CHECK: @_ZTCSd0_Si = internal constant 
+// CHECK: @_ZTCSd16_So = internal constant
+// CHECK: @_ZTTSd = weak_odr constant
+// CHECK: @_ZTVSo = weak_odr constant
+// CHECK: @_ZTTSo = weak_odr constant
+// CHECK: @_ZTVSi = weak_odr constant
+// CHECK: @_ZTTSi = weak_odr constant
 namespace std {
   struct A { A(); };
   
@@ -32,9 +43,30 @@ namespace std {
 void f(std::string) { }
 
 namespace std {
-  template<typename, typename> struct basic_istream { };
-  template<typename, typename> struct basic_ostream { };
-  template<typename, typename> struct basic_iostream { };
+  template<typename, typename> struct basic_ios { 
+    basic_ios(int);
+    virtual ~basic_ios();
+  };
+  template<typename charT, typename traits = char_traits<charT> > 
+  struct basic_istream : virtual public basic_ios<charT, traits> { 
+    basic_istream(int x) : basic_ios<charT, traits>(x), stored(x) { }
+
+    int stored;
+  };
+  template<typename charT, typename traits = char_traits<charT> > 
+  struct basic_ostream : virtual public basic_ios<charT, traits> { 
+    basic_ostream(int x) : basic_ios<charT, traits>(x), stored(x) { }
+
+    float stored;
+  };
+
+  template<typename charT, typename traits = char_traits<charT> > 
+    struct basic_iostream : public basic_istream<charT, traits>, 
+                            public basic_ostream<charT, traits> { 
+    basic_iostream(int x) : basic_istream<charT, traits>(x),
+                            basic_ostream<charT, traits>(x),
+                            basic_ios<charT, traits>(x) { }
+  };
 }
 
 // CHECK: _Z1fSi
@@ -61,3 +93,9 @@ namespace std
 template<typename, typename, typename> struct basic_string { };
 typedef basic_string<char, std::char_traits<char>, std::allocator<char> > not_string;
 void f(not_string) { }
+
+// Manglings for instantiations caused by this function are at the
+// top of the test.
+void create_streams() {
+  std::basic_iostream<char> bio(17);
+}