Note that we support (and in fact have supported since the dawn of time itself)

C++1y binary literals.

llvm-svn: 179883

1 files changed, 19 insertions, 0 deletions

diff --git a/clang/test/Lexer/cxx1y_binary_literal.cpp b/clang/test/Lexer/cxx1y_binary_literal.cpp
new file mode 100644
index 00000000000..96dce3dd443
--- /dev/null
+++ b/clang/test/Lexer/cxx1y_binary_literal.cpp
@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -std=c++1y %s -verify
+
+static_assert(0b1001 == 9, "");
+
+using I = int;
+using I = decltype(0b101001);
+using ULL = unsigned long long;
+using ULL = decltype(0b10101001ULL);
+
+constexpr unsigned long long operator""_foo(unsigned long long n) {
+  return n * 2;
+}
+static_assert(0b10001111_foo == 286, "");
+
+int k1 = 0b1234; // expected-error {{invalid digit '2' in binary constant}}
+// FIXME: If we ever need to support a standard suffix starting with [a-f],
+// we'll need to rework our binary literal parsing rules.
+int k2 = 0b10010f; // expected-error {{invalid digit 'f' in binary constant}}
+int k3 = 0b10010g; // expected-error {{invalid suffix 'g' on integer constant}}