ObjectiveC. Added support for methods annotated with format_arg
attributes when such methods are actually envoked in message
expression. // rdar://15242010
llvm-svn: 193003
diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index b0950ab..fd3bce2 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -2123,6 +2123,27 @@
return SLCT_NotALiteral;
}
+
+ case Stmt::ObjCMessageExprClass: {
+ const ObjCMessageExpr *ME = cast<ObjCMessageExpr>(E);
+ if (const ObjCMethodDecl *MDecl = ME->getMethodDecl()) {
+ if (const NamedDecl *ND = dyn_cast<NamedDecl>(MDecl)) {
+ if (const FormatArgAttr *FA = ND->getAttr<FormatArgAttr>()) {
+ unsigned ArgIndex = FA->getFormatIdx();
+ if (ArgIndex <= ME->getNumArgs()) {
+ const Expr *Arg = ME->getArg(ArgIndex-1);
+ return checkFormatStringExpr(S, Arg, Args,
+ HasVAListArg, format_idx,
+ firstDataArg, Type, CallType,
+ InFunctionCall, CheckedVarArgs);
+ }
+ }
+ }
+ }
+
+ return SLCT_NotALiteral;
+ }
+
case Stmt::ObjCStringLiteralClass:
case Stmt::StringLiteralClass: {
const StringLiteral *StrE = NULL;