Add sema support for the nodebug attribute.
llvm-svn: 64441
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f71a473720
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@ -55,7 +55,8 @@ public:
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Blocks,
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Const,
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Pure,
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Cleanup
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Cleanup,
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Nodebug
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};
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private:
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@ -493,6 +494,16 @@ public:
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static bool classof(const CleanupAttr *A) { return true; }
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};
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class NodebugAttr : public Attr {
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public:
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NodebugAttr() : Attr(Nodebug) {}
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// Implement isa/cast/dyncast/etc.
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static bool classof(const Attr *A) { return A->getKind() == Nodebug; }
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static bool classof(const DeprecatedAttr *A) { return true; }
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};
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} // end namespace clang
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#endif
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@ -80,6 +80,7 @@ public:
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AT_const,
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AT_nsobject,
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AT_cleanup,
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AT_nodebug,
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UnknownAttribute
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};
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@ -70,6 +70,7 @@ AttributeList::Kind AttributeList::getKind(const IdentifierInfo *Name) {
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case 7:
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if (!memcmp(Str, "aligned", 7)) return AT_aligned;
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if (!memcmp(Str, "cleanup", 7)) return AT_cleanup;
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if (!memcmp(Str, "nodebug", 7)) return AT_nodebug;
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if (!memcmp(Str, "nonnull", 7)) return AT_nonnull;
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if (!memcmp(Str, "nothrow", 7)) return AT_nothrow;
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if (!memcmp(Str, "objc_gc", 7)) return AT_objc_gc;
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@ -1304,6 +1304,22 @@ static void HandleModeAttr(Decl *D, const AttributeList &Attr, Sema &S) {
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cast<ValueDecl>(D)->setType(NewTy);
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}
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static void HandleNodebugAttr(Decl *d, const AttributeList &Attr, Sema &S) {
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// check the attribute arguments.
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if (Attr.getNumArgs() > 0) {
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S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
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return;
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}
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FunctionDecl *Fn = dyn_cast<FunctionDecl>(d);
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if (!Fn) {
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S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
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<< "nodebug" << "function";
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return;
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}
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d->addAttr(new NodebugAttr());
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}
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//===----------------------------------------------------------------------===//
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// Top Level Sema Entry Points
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//===----------------------------------------------------------------------===//
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@ -1355,10 +1371,11 @@ static void ProcessDeclAttribute(Decl *D, const AttributeList &Attr, Sema &S) {
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case AttributeList::AT_const: HandleConstAttr (D, Attr, S); break;
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case AttributeList::AT_pure: HandlePureAttr (D, Attr, S); break;
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case AttributeList::AT_cleanup: HandleCleanupAttr (D, Attr, S); break;
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case AttributeList::AT_nodebug: HandleNodebugAttr (D, Attr, S); break;
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default:
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#if 0
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// TODO: when we have the full set of attributes, warn about unknown ones.
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S.Diag(Attr->getLoc(), diag::warn_attribute_ignored) << Attr->getName();
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S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName();
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#endif
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break;
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}
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@ -0,0 +1,8 @@
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// RUN: clang %s -verify -fsyntax-only
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int a __attribute__((nodebug)); // expected-warning {{'nodebug' attribute only applies to function types}}
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void t1() __attribute__((nodebug));
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void t2() __attribute__((nodebug(2))); // expected-error {{attribute requires 0 argument(s)}}
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