Implement __builtin_LINE() et. al. to support source location capture.
Summary:
This patch implements the source location builtins `__builtin_LINE(), `__builtin_FUNCTION()`, `__builtin_FILE()` and `__builtin_COLUMN()`. These builtins are needed to implement [`std::experimental::source_location`](https://rawgit.com/cplusplus/fundamentals-ts/v2/main.html#reflection.src_loc.creation).
With the exception of `__builtin_COLUMN`, GCC also implements these builtins, and Clangs behavior is intended to match as closely as possible.
Reviewers: rsmith, joerg, aaron.ballman, bogner, majnemer, shafik, martong
Reviewed By: rsmith
Subscribers: rnkovacs, loskutov, riccibruno, mgorny, kunitoki, alexr, majnemer, hfinkel, cfe-commits
Differential Revision: https://reviews.llvm.org/D37035
llvm-svn: 360937
diff --git a/clang/lib/AST/ExprCXX.cpp b/clang/lib/AST/ExprCXX.cpp
index bbf7e04..870190a 100644
--- a/clang/lib/AST/ExprCXX.cpp
+++ b/clang/lib/AST/ExprCXX.cpp
@@ -907,13 +907,14 @@
}
CXXDefaultInitExpr::CXXDefaultInitExpr(const ASTContext &Ctx, SourceLocation Loc,
- FieldDecl *Field, QualType Ty)
+ FieldDecl *Field, QualType Ty,
+ DeclContext *UsedContext)
: Expr(CXXDefaultInitExprClass, Ty.getNonLValueExprType(Ctx),
Ty->isLValueReferenceType() ? VK_LValue : Ty->isRValueReferenceType()
? VK_XValue
: VK_RValue,
/*FIXME*/ OK_Ordinary, false, false, false, false),
- Field(Field) {
+ Field(Field), UsedContext(UsedContext) {
CXXDefaultInitExprBits.Loc = Loc;
assert(Field->hasInClassInitializer());
}