Implement C++1y digit separator proposal (' as a digit separator). This is not
yet approved by full committee, but was unanimously supported by EWG.
llvm-svn: 191417
diff --git a/clang/test/Lexer/cxx1y_digit_separators.cpp b/clang/test/Lexer/cxx1y_digit_separators.cpp
new file mode 100644
index 0000000..2c83b1f
--- /dev/null
+++ b/clang/test/Lexer/cxx1y_digit_separators.cpp
@@ -0,0 +1,34 @@
+// RUN: %clang_cc1 -std=c++1y -verify %s
+
+int operator""ms(unsigned long long); // expected-warning {{reserved}}
+float operator""ms(long double); // expected-warning {{reserved}}
+
+namespace integral {
+ static_assert(1'2'3 == 12'3, "");
+ static_assert(1'000'000 == 0xf'4240, "");
+ static_assert(0'004'000'000 == 0x10'0000, "");
+ static_assert(0b0101'0100 == 0x54, "");
+
+ int a = 123'; //'; // expected-error {{expected ';'}}
+ int b = 0'xff; // expected-error {{digit separator cannot appear at end of digit sequence}} expected-error {{suffix 'xff' on integer}}
+ int c = 0x'ff; // expected-error {{suffix 'x'ff' on integer}}
+ int d = 0'1234; // ok, octal
+ int e = 0'b1010; // expected-error {{digit 'b' in octal constant}}
+ int f = 0b'1010; // expected-error {{invalid digit 'b' in octal}}
+ int g = 123'ms; // expected-error {{digit separator cannot appear at end of digit sequence}}
+
+ // FIXME: not yet known if _ after ' will be permitted.
+ int z = 0'123'_foo; //'; // expected-error {{expected ';'}}
+}
+
+namespace floating {
+ static_assert(0'123.456'7 == 123.4567, "");
+ static_assert(1e1'0 == 10'000'000'000, "");
+
+ float a = 1'e1; // expected-error {{digit separator cannot appear at end of digit sequence}}
+ float b = 1'0e1;
+ float c = 1.'0e1; // expected-error {{digit separator cannot appear at start of digit sequence}}
+ float d = 1.0'e1; // expected-error {{digit separator cannot appear at end of digit sequence}}
+ float e = 1e'1; // expected-error {{digit separator cannot appear at start of digit sequence}}
+ float f = 1e1'ms; // expected-error {{digit separator cannot appear at end of digit sequence}}
+}