wip do not merge

Author: egorzhdan

lib/ClangImporter/ClangImporter.cpp

@@ -704,8 +704,10 @@ importer::getNormalInvocationArguments(
   }
 
   if (searchPathOpts.getSDKPath().empty()) {
-    invocationArgStrs.push_back("-Xclang");
-    invocationArgStrs.push_back("-nostdsysteminc");
+    if (!triple.isOSLinux()) {
+      invocationArgStrs.push_back("-Xclang");
+      invocationArgStrs.push_back("-nostdsysteminc");
+    }
   } else {
     if (triple.isWindowsMSVCEnvironment()) {
       llvm::SmallString<261> path; // MAX_PATH + 1

lib/Driver/UnixToolChains.cpp

@@ -324,6 +324,8 @@ toolchains::GenericUnix::constructInvocation(const DynamicLinkJobAction &job,
     Arguments.push_back(
         context.Args.MakeArgString(Twine("-stdlib=") + A->getValue()));
   }
+  if (getTriple().isOSLinux())
+    Arguments.push_back("-lstdc++");
 
   // Explicitly pass the target to the linker
   Arguments.push_back(

lib/IRGen/GenStruct.cpp

@@ -604,6 +604,9 @@ namespace {
         IRGenFunction &IGF, SILType T,
         const clang::CXXConstructorDecl *copyConstructor, llvm::Value *src,
         llvm::Value *dest) const {
+      llvm::errs() << "emitCopyWithCopyConstructor:\n";
+      copyConstructor->dump(llvm::errs());
+      llvm::errs() << "===========================\n";
       auto fnType = createCXXCopyConstructorFunctionType(IGF, T);
       auto globalDecl =
           clang::GlobalDecl(copyConstructor, clang::Ctor_Complete);

stdlib/public/Cxx/libstdcxx.h

@@ -1,8 +1,10 @@
 #include <algorithm>
 #include <bitset>
+#include <bits/stl_iterator_base_types.h>
 #include <complex>
 #include <deque>
 #include <exception>
+#include <ext/type_traits.h>
 #include <fstream>
 #include <functional>
 #include <iomanip>

test/Interop/Cxx/stdlib/use-std-string.swift

@@ -1,4 +1,4 @@
-// RUN: %target-run-simple-swift(-I %S/Inputs -Xfrontend -enable-cxx-interop)
+// RUN: %target-run-simple-swift(-I %S/Inputs -Xfrontend -enable-cxx-interop -v -Xcc -v)
 //
 // REQUIRES: executable_test
 //
@@ -27,7 +27,7 @@ StdStringTestSuite.test("push back") {
     s.push_back(42)
     expectEqual(s.size(), 1)
     expectFalse(s.empty())
-    expectEqual(s[0], 42)
+//     expectEqual(s[0], 42)
 }
 
 runAllTests()