Stringizing raw string literals containing newline

Summary: This patch implements 4.3 of http://open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4220.pdf. If a raw string contains a newline character, replace each newline character with the \n escape code. Without this patch, included test case (macro_raw_string.cpp) results compilation failure.

Reviewers: rsmith, doug.gregor, jkorous-apple

Reviewed By: jkorous-apple

Subscribers: jkorous-apple, vsapsai, cfe-commits

Differential Revision: https://reviews.llvm.org/D39279

llvm-svn: 319904

1 files changed, 11 insertions, 0 deletions

diff --git a/clang/test/Preprocessor/macro_raw_string.cpp b/clang/test/Preprocessor/macro_raw_string.cpp
new file mode 100644
index 00000000000..d56894888d1
--- /dev/null
+++ b/clang/test/Preprocessor/macro_raw_string.cpp
@@ -0,0 +1,11 @@
+// RUN: %clang_cc1 -E -std=c++11 %s -o %t
+// RUN: %clang_cc1 %t
+
+#define FOO(str) foo(#str)
+
+extern void foo(const char *str);
+
+void bar() {
+  FOO(R"(foo
+    bar)");
+}