map previously ignored __attribute((malloc)) to noalias attribute of llvm function's return
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@78541 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index 6df8120..2f86fe1 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -424,6 +424,22 @@
d->addAttr(::new (S.Context) AlwaysInlineAttr());
}
+static void HandleMallocAttr(Decl *d, const AttributeList &Attr, Sema &S) {
+ // check the attribute arguments.
+ if (Attr.getNumArgs() != 0) {
+ S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
+ return;
+ }
+
+ if (!isFunctionOrMethod(d)) {
+ S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
+ << Attr.getName() << 0 /*function*/;
+ return;
+ }
+
+ d->addAttr(::new (S.Context) MallocAttr());
+}
+
static bool HandleCommonNoReturnAttr(Decl *d, const AttributeList &Attr,
Sema &S) {
// check the attribute arguments.
@@ -1759,6 +1775,7 @@
case AttributeList::AT_format_arg: HandleFormatArgAttr (D, Attr, S); break;
case AttributeList::AT_gnu_inline: HandleGNUInlineAttr(D, Attr, S); break;
case AttributeList::AT_mode: HandleModeAttr (D, Attr, S); break;
+ case AttributeList::AT_malloc: HandleMallocAttr (D, Attr, S); break;
case AttributeList::AT_nonnull: HandleNonNullAttr (D, Attr, S); break;
case AttributeList::AT_noreturn: HandleNoReturnAttr (D, Attr, S); break;
case AttributeList::AT_nothrow: HandleNothrowAttr (D, Attr, S); break;