Make it possible for builtins to expression FILE* arguments, so that
we can define builtins such as fprintf, vfprintf, and
__builtin___fprintf_chk. Give a nice error message when we need to
implicitly declare a function like fprintf.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64526 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index 3c02d4b..16e8691 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -298,7 +298,19 @@
if (Context.BuiltinInfo.hasVAListUse(BID))
InitBuiltinVaListType();
- QualType R = Context.BuiltinInfo.GetBuiltinType(BID, Context);
+ Builtin::Context::GetBuiltinTypeError Error;
+ QualType R = Context.BuiltinInfo.GetBuiltinType(BID, Context, Error);
+ switch (Error) {
+ case Builtin::Context::GE_None:
+ // Okay
+ break;
+
+ case Builtin::Context::GE_Missing_FILE:
+ if (ForRedeclaration)
+ Diag(Loc, diag::err_implicit_decl_requires_stdio)
+ << Context.BuiltinInfo.GetName(BID);
+ return 0;
+ }
if (!ForRedeclaration && Context.BuiltinInfo.isPredefinedLibFunction(BID)) {
Diag(Loc, diag::ext_implicit_lib_function_decl)