fix PR7885, rejecting invalid uses of __builtin_constant_p.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116317 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaChecking.cpp b/lib/Sema/SemaChecking.cpp
index f03e1f9..1a07a86 100644
--- a/lib/Sema/SemaChecking.cpp
+++ b/lib/Sema/SemaChecking.cpp
@@ -198,6 +198,16 @@
if (SemaBuiltinLongjmp(TheCall))
return ExprError();
break;
+ case Builtin::BI__builtin_constant_p:
+ if (TheCall->getNumArgs() == 0)
+ return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args)
+ << 0 /*function call*/ << 1 << 0 << TheCall->getSourceRange();
+ if (TheCall->getNumArgs() > 1)
+ return Diag(TheCall->getArg(1)->getLocStart(),
+ diag::err_typecheck_call_too_many_args)
+ << 0 /*function call*/ << 1 << TheCall->getNumArgs()
+ << TheCall->getArg(1)->getSourceRange();
+ break;
case Builtin::BI__sync_fetch_and_add:
case Builtin::BI__sync_fetch_and_sub:
case Builtin::BI__sync_fetch_and_or: