Renamed Lang_C to Lang_C99, Lang_CXX to Lang_CXX03, and 2a to 20

Summary:
I think we would be better off with tests explicitly specifying the
language mode. Right now Lang_C means C99, but reads as "any C version",
or as "unspecified C version".

I also changed '-std=c++98' to '-std=c++03' because they are aliases (so
there is no difference in practice), because Clang implements C++03
rules in practice, and because 03 makes a nice sortable progression
between 03, 11, 14, 17, 20.

Reviewers: shafik, hlopko

Reviewed By: hlopko

Subscribers: jfb, martong, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D81000

1 files changed, 3 insertions, 3 deletions

diff --git a/clang/unittests/AST/SourceLocationTest.cpp b/clang/unittests/AST/SourceLocationTest.cpp
index ef82a02..cb96afe 100644
--- a/clang/unittests/AST/SourceLocationTest.cpp
+++ b/clang/unittests/AST/SourceLocationTest.cpp
@@ -82,13 +82,13 @@ TEST(LabelStmt, Range) {
 TEST(ParmVarDecl, KNRLocation) {
   LocationVerifier<ParmVarDecl> Verifier;
   Verifier.expectLocation(1, 8);
-  EXPECT_TRUE(Verifier.match("void f(i) {}", varDecl(), Lang_C));
+  EXPECT_TRUE(Verifier.match("void f(i) {}", varDecl(), Lang_C99));
 }
 
 TEST(ParmVarDecl, KNRRange) {
   RangeVerifier<ParmVarDecl> Verifier;
   Verifier.expectRange(1, 8, 1, 8);
-  EXPECT_TRUE(Verifier.match("void f(i) {}", varDecl(), Lang_C));
+  EXPECT_TRUE(Verifier.match("void f(i) {}", varDecl(), Lang_C99));
 }
 
 TEST(CXXNewExpr, ArrayRange) {
@@ -814,7 +814,7 @@ TEST(FunctionDecl, ExceptionSpecifications) {
   std::vector<std::string> Args;
   Args.push_back("-fms-extensions");
   EXPECT_TRUE(Verifier.match("void f() throw(...);\n", loc(functionType()),
-                             Args, Lang_CXX));
+                             Args, Lang_CXX03));
 
   Verifier.expectRange(1, 10, 1, 10);
   EXPECT_TRUE(