forked from OSchip/llvm-project
Accept [[gnu::*]] for all __attribute__((*))s which are:
1) Supported by Clang, and 2) Supported by GCC, and 3) Documented in GCC's manual. g++ allows its C++11-style attributes to appertain only to the entity being declared, and never to a type (even for a type attribute), so we do the same. llvm-svn: 172382
This commit is contained in:
Richard Smith
parent
3d462f89de
commit
368ca52cd9
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@ -29,7 +29,7 @@ class SubsetSubject<AttrSubject base, string description, code check>
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code CheckCode = check;
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}
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// This is the type of a variable which C++0x defines [[aligned()]] as being
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// This is the type of a variable which C++11 defines [[aligned()]] as being
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// a possible subject.
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def NormalVar : SubsetSubject<Var, "non-register, non-parameter variable",
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[{S->getStorageClass() != VarDecl::Register &&
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@ -136,12 +136,12 @@ def AddressSpace : Attr {
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}
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def Alias : InheritableAttr {
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let Spellings = [GNU<"alias">];
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let Spellings = [GNU<"alias">, CXX11<"gnu", "alias">];
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let Args = [StringArgument<"Aliasee">];
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}
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def Aligned : InheritableAttr {
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let Spellings = [GNU<"aligned">, GNU<"align">];
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let Spellings = [GNU<"aligned">, GNU<"align">, CXX11<"gnu", "aligned">];
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let Subjects = [NonBitField, NormalVar, Tag];
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let Args = [AlignedArgument<"Alignment">, BoolArgument<"IsMSDeclSpec">];
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}
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@ -152,16 +152,16 @@ def AlignMac68k : InheritableAttr {
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}
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def AllocSize : Attr {
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let Spellings = [GNU<"alloc_size">];
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let Spellings = [GNU<"alloc_size">, CXX11<"gnu", "alloc_size">];
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let Args = [VariadicUnsignedArgument<"Args">];
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}
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def AlwaysInline : InheritableAttr {
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let Spellings = [GNU<"always_inline">];
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let Spellings = [GNU<"always_inline">, CXX11<"gnu", "always_inline">];
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}
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def TLSModel : InheritableAttr {
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let Spellings = [GNU<"tls_model">];
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let Spellings = [GNU<"tls_model">, CXX11<"gnu", "tls_model">];
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let Subjects = [Var];
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let Args = [StringArgument<"Model">];
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}
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@ -214,7 +214,7 @@ def CarriesDependency : InheritableParamAttr {
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}
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def CDecl : InheritableAttr {
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let Spellings = [GNU<"cdecl">, GNU<"__cdecl">];
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let Spellings = [GNU<"cdecl">, GNU<"__cdecl">, CXX11<"gnu", "cdecl">];
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}
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// cf_audited_transfer indicates that the given function has been
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@ -250,24 +250,24 @@ def CFConsumed : InheritableParamAttr {
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}
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def Cleanup : InheritableAttr {
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let Spellings = [GNU<"cleanup">];
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let Spellings = [GNU<"cleanup">, CXX11<"gnu", "cleanup">];
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let Args = [FunctionArgument<"FunctionDecl">];
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}
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def Cold : InheritableAttr {
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let Spellings = [GNU<"cold">];
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let Spellings = [GNU<"cold">, CXX11<"gnu", "cold">];
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}
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def Common : InheritableAttr {
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let Spellings = [GNU<"common">];
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let Spellings = [GNU<"common">, CXX11<"gnu", "common">];
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}
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def Const : InheritableAttr {
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let Spellings = [GNU<"const">, GNU<"__const">];
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let Spellings = [GNU<"const">, GNU<"__const">, CXX11<"gnu", "const">];
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}
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def Constructor : InheritableAttr {
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let Spellings = [GNU<"constructor">];
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let Spellings = [GNU<"constructor">, CXX11<"gnu", "constructor">];
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let Args = [IntArgument<"Priority">];
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}
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@ -307,12 +307,12 @@ def OpenCLImageAccess : Attr {
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}
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def Deprecated : InheritableAttr {
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let Spellings = [GNU<"deprecated">];
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let Spellings = [GNU<"deprecated">, CXX11<"gnu", "deprecated">];
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let Args = [StringArgument<"Message">];
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}
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def Destructor : InheritableAttr {
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let Spellings = [GNU<"destructor">];
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let Spellings = [GNU<"destructor">, CXX11<"gnu", "destructor">];
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let Args = [IntArgument<"Priority">];
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}
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@ -323,12 +323,13 @@ def ExtVectorType : Attr {
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}
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def FallThrough : Attr {
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let Spellings = [CXX11<"clang","fallthrough">];
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let Spellings = [CXX11<"clang", "fallthrough">];
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let Subjects = [NullStmt];
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}
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def FastCall : InheritableAttr {
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let Spellings = [GNU<"fastcall">, GNU<"__fastcall">];
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let Spellings = [GNU<"fastcall">, GNU<"__fastcall">,
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CXX11<"gnu", "fastcall">];
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}
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def Final : InheritableAttr {
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@ -342,22 +343,22 @@ def MinSize : InheritableAttr {
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}
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def Format : InheritableAttr {
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let Spellings = [GNU<"format">];
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let Spellings = [GNU<"format">, CXX11<"gnu", "format">];
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let Args = [StringArgument<"Type">, IntArgument<"FormatIdx">,
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IntArgument<"FirstArg">];
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}
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def FormatArg : InheritableAttr {
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let Spellings = [GNU<"format_arg">];
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let Spellings = [GNU<"format_arg">, CXX11<"gnu", "format_arg">];
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let Args = [IntArgument<"FormatIdx">];
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}
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def GNUInline : InheritableAttr {
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let Spellings = [GNU<"gnu_inline">];
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let Spellings = [GNU<"gnu_inline">, CXX11<"gnu", "gnu_inline">];
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}
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def Hot : InheritableAttr {
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let Spellings = [GNU<"hot">];
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let Spellings = [GNU<"hot">, CXX11<"gnu", "hot">];
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}
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def IBAction : InheritableAttr {
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@ -374,7 +375,7 @@ def IBOutletCollection : InheritableAttr {
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}
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def Malloc : InheritableAttr {
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let Spellings = [GNU<"malloc">];
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let Spellings = [GNU<"malloc">, CXX11<"gnu", "malloc">];
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}
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def MaxFieldAlignment : InheritableAttr {
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@ -384,7 +385,7 @@ def MaxFieldAlignment : InheritableAttr {
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}
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def MayAlias : InheritableAttr {
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let Spellings = [GNU<"may_alias">];
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let Spellings = [GNU<"may_alias">, CXX11<"gnu", "may_alias">];
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}
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def MSP430Interrupt : InheritableAttr {
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@ -404,13 +405,13 @@ def MBlazeSaveVolatiles : InheritableAttr {
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}
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def Mode : Attr {
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let Spellings = [GNU<"mode">];
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let Spellings = [GNU<"mode">, CXX11<"gnu", "mode">];
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let Args = [IdentifierArgument<"Mode">];
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let ASTNode = 0;
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}
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def Naked : InheritableAttr {
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let Spellings = [GNU<"naked">];
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let Spellings = [GNU<"naked">, CXX11<"gnu", "naked">];
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}
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def NeonPolyVectorType : Attr {
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@ -426,11 +427,11 @@ def NeonVectorType : Attr {
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}
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def ReturnsTwice : InheritableAttr {
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let Spellings = [GNU<"returns_twice">];
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let Spellings = [GNU<"returns_twice">, CXX11<"gnu", "returns_twice">];
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}
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def NoCommon : InheritableAttr {
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let Spellings = [GNU<"nocommon">];
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let Spellings = [GNU<"nocommon">, CXX11<"gnu", "nocommon">];
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}
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def NoDebug : InheritableAttr {
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@ -438,11 +439,11 @@ def NoDebug : InheritableAttr {
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}
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def NoInline : InheritableAttr {
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let Spellings = [GNU<"noinline">];
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let Spellings = [GNU<"noinline">, CXX11<"gnu", "noinline">];
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}
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def NonNull : InheritableAttr {
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let Spellings = [GNU<"nonnull">];
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let Spellings = [GNU<"nonnull">, CXX11<"gnu", "nonnull">];
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let Args = [VariadicUnsignedArgument<"Args">];
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let AdditionalMembers =
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[{bool isNonNull(unsigned idx) const {
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@ -455,19 +456,20 @@ def NonNull : InheritableAttr {
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}
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def NoReturn : InheritableAttr {
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let Spellings = [GNU<"noreturn">, CXX11<"","noreturn">,
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CXX11<"std","noreturn">];
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let Spellings = [GNU<"noreturn">, CXX11<"gnu", "noreturn">,
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CXX11<"", "noreturn">, CXX11<"std", "noreturn">];
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// FIXME: Does GCC allow this on the function instead?
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let Subjects = [Function];
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}
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def NoInstrumentFunction : InheritableAttr {
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let Spellings = [GNU<"no_instrument_function">];
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let Spellings = [GNU<"no_instrument_function">,
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CXX11<"gnu", "no_instrument_function">];
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let Subjects = [Function];
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}
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def NoThrow : InheritableAttr {
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let Spellings = [GNU<"nothrow">];
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let Spellings = [GNU<"nothrow">, CXX11<"gnu", "nothrow">];
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}
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def NSBridged : InheritableAttr {
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@ -558,7 +560,7 @@ def Ownership : InheritableAttr {
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}
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def Packed : InheritableAttr {
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let Spellings = [GNU<"packed">];
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let Spellings = [GNU<"packed">, CXX11<"gnu", "packed">];
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}
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def PnaclCall : InheritableAttr {
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@ -570,18 +572,18 @@ def IntelOclBicc : InheritableAttr {
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}
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def Pcs : InheritableAttr {
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let Spellings = [GNU<"pcs">];
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let Spellings = [GNU<"pcs">, CXX11<"gnu", "pcs">];
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let Args = [EnumArgument<"PCS", "PCSType",
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["aapcs", "aapcs-vfp"],
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["AAPCS", "AAPCS_VFP"]>];
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}
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def Pure : InheritableAttr {
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let Spellings = [GNU<"pure">];
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let Spellings = [GNU<"pure">, CXX11<"gnu", "pure">];
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}
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def Regparm : InheritableAttr {
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let Spellings = [GNU<"regparm">];
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let Spellings = [GNU<"regparm">, CXX11<"gnu", "regparm">];
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let Args = [UnsignedArgument<"NumParams">];
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}
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@ -604,22 +606,23 @@ def InitPriority : InheritableAttr {
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}
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def Section : InheritableAttr {
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let Spellings = [GNU<"section">];
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let Spellings = [GNU<"section">, CXX11<"gnu", "section">];
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let Args = [StringArgument<"Name">];
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}
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def Sentinel : InheritableAttr {
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let Spellings = [GNU<"sentinel">];
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let Spellings = [GNU<"sentinel">, CXX11<"gnu", "sentinel">];
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let Args = [DefaultIntArgument<"Sentinel", 0>,
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DefaultIntArgument<"NullPos", 0>];
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}
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def StdCall : InheritableAttr {
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let Spellings = [GNU<"stdcall">, GNU<"__stdcall">];
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let Spellings = [GNU<"stdcall">, GNU<"__stdcall">, CXX11<"gnu", "stdcall">];
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}
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def ThisCall : InheritableAttr {
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let Spellings = [GNU<"thiscall">, GNU<"__thiscall">];
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let Spellings = [GNU<"thiscall">, GNU<"__thiscall">,
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CXX11<"gnu", "thiscall">];
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}
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def Pascal : InheritableAttr {
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@ -627,7 +630,7 @@ def Pascal : InheritableAttr {
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}
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def TransparentUnion : InheritableAttr {
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let Spellings = [GNU<"transparent_union">];
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let Spellings = [GNU<"transparent_union">, CXX11<"gnu", "transparent_union">];
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}
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def Unavailable : InheritableAttr {
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@ -658,11 +661,11 @@ def ObjCRequiresPropertyDefs : InheritableAttr {
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}
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def Unused : InheritableAttr {
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let Spellings = [GNU<"unused">];
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let Spellings = [GNU<"unused">, CXX11<"gnu", "unused">];
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}
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def Used : InheritableAttr {
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let Spellings = [GNU<"used">];
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let Spellings = [GNU<"used">, CXX11<"gnu", "used">];
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}
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def Uuid : InheritableAttr {
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@ -672,7 +675,7 @@ def Uuid : InheritableAttr {
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}
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def VectorSize : Attr {
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let Spellings = [GNU<"vector_size">];
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let Spellings = [GNU<"vector_size">, CXX11<"gnu", "vector_size">];
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let Args = [ExprArgument<"NumBytes">];
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let ASTNode = 0;
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}
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@ -686,7 +689,7 @@ def VecTypeHint : Attr {
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def Visibility : InheritableAttr {
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let Clone = 0;
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let Spellings = [GNU<"visibility">];
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let Spellings = [GNU<"visibility">, CXX11<"gnu", "visibility">];
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let Args = [EnumArgument<"Visibility", "VisibilityType",
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["default", "hidden", "internal", "protected"],
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["Default", "Hidden", "Hidden", "Protected"]>];
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@ -698,11 +701,13 @@ def VecReturn : InheritableAttr {
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}
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def WarnUnusedResult : InheritableAttr {
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let Spellings = [GNU<"warn_unused_result">, CXX11<"clang","warn_unused_result">];
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let Spellings = [GNU<"warn_unused_result">,
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CXX11<"clang", "warn_unused_result">,
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CXX11<"gnu", "warn_unused_result">];
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}
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def Weak : InheritableAttr {
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let Spellings = [GNU<"weak">];
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let Spellings = [GNU<"weak">, CXX11<"gnu", "weak">];
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}
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def WeakImport : InheritableAttr {
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@ -710,7 +715,7 @@ def WeakImport : InheritableAttr {
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}
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def WeakRef : InheritableAttr {
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let Spellings = [GNU<"weakref">];
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let Spellings = [GNU<"weakref">, CXX11<"gnu", "weakref">];
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}
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def X86ForceAlignArgPointer : InheritableAttr {
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@ -1761,6 +1761,9 @@ def warn_attribute_after_definition_ignored : Warning<
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InGroup<IgnoredAttributes>;
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def warn_unknown_attribute_ignored : Warning<
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"unknown attribute %0 ignored">, InGroup<UnknownAttributes>;
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def warn_cxx11_gnu_attribute_on_type : Warning<
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"attribute %0 ignored, because it cannot be applied to a type">,
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InGroup<IgnoredAttributes>;
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def warn_unhandled_ms_attribute_ignored : Warning<
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"__declspec attribute %0 is not supported">,
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InGroup<IgnoredAttributes>;
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@ -270,8 +270,18 @@ static void moveAttrFromListToList(AttributeList &attr,
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spliceAttrIntoList(attr, toList);
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}
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/// The location of a type attribute.
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enum TypeAttrLocation {
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/// The attribute is in the decl-specifier-seq.
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TAL_DeclSpec,
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/// The attribute is part of a DeclaratorChunk.
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TAL_DeclChunk,
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/// The attribute is immediately after the declaration's name.
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TAL_DeclName
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};
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static void processTypeAttrs(TypeProcessingState &state,
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QualType &type, bool isDeclSpec,
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QualType &type, TypeAttrLocation TAL,
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AttributeList *attrs);
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static bool handleFunctionTypeAttr(TypeProcessingState &state,
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@ -963,7 +973,7 @@ static QualType ConvertDeclSpecToType(TypeProcessingState &state) {
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// list of type attributes to be temporarily saved while the type
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// attributes are pushed around.
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if (AttributeList *attrs = DS.getAttributes().getList())
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processTypeAttrs(state, Result, true, attrs);
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processTypeAttrs(state, Result, TAL_DeclSpec, attrs);
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// Apply const/volatile/restrict qualifiers to T.
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if (unsigned TypeQuals = DS.getTypeQualifiers()) {
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@ -1859,7 +1869,7 @@ static QualType GetDeclSpecTypeForDeclarator(TypeProcessingState &state,
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// "void" instead.
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T = SemaRef.Context.VoidTy;
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if (AttributeList *attrs = D.getDeclSpec().getAttributes().getList())
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processTypeAttrs(state, T, true, attrs);
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processTypeAttrs(state, T, TAL_DeclSpec, attrs);
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break;
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case UnqualifiedId::IK_ConversionFunctionId:
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@ -2665,7 +2675,7 @@ static TypeSourceInfo *GetFullTypeForDeclarator(TypeProcessingState &state,
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// See if there are any attributes on this declarator chunk.
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if (AttributeList *attrs = const_cast<AttributeList*>(DeclType.getAttrs()))
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processTypeAttrs(state, T, false, attrs);
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processTypeAttrs(state, T, TAL_DeclChunk, attrs);
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}
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if (LangOpts.CPlusPlus && T->isFunctionType()) {
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@ -2753,7 +2763,7 @@ static TypeSourceInfo *GetFullTypeForDeclarator(TypeProcessingState &state,
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// Apply any undistributed attributes from the declarator.
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if (!T.isNull())
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if (AttributeList *attrs = D.getAttributes())
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processTypeAttrs(state, T, false, attrs);
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processTypeAttrs(state, T, TAL_DeclName, attrs);
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||||
|
||||
// Diagnose any ignored type attributes.
|
||||
if (!T.isNull()) state.diagnoseIgnoredTypeAttrs(T);
|
||||
|
|
@ -4150,7 +4160,7 @@ static void HandleNeonVectorTypeAttr(QualType& CurType,
|
|||
}
|
||||
|
||||
static void processTypeAttrs(TypeProcessingState &state, QualType &type,
|
||||
bool isDeclSpec, AttributeList *attrs) {
|
||||
TypeAttrLocation TAL, AttributeList *attrs) {
|
||||
// Scan through and apply attributes to this type where it makes sense. Some
|
||||
// attributes (such as __address_space__, __vector_size__, etc) apply to the
|
||||
// type, but others can be present in the type specifiers even though they
|
||||
|
|
@ -4165,6 +4175,20 @@ static void processTypeAttrs(TypeProcessingState &state, QualType &type,
|
|||
if (attr.isInvalid())
|
||||
continue;
|
||||
|
||||
// [[gnu::...]] attributes are treated as declaration attributes, so may
|
||||
// not appertain to a DeclaratorChunk, even if we handle them as type
|
||||
// attributes.
|
||||
// FIXME: All other C++11 type attributes may *only* appertain to a type,
|
||||
// and should only be considered here if they appertain to a
|
||||
// DeclaratorChunk.
|
||||
if (attr.isCXX11Attribute() && TAL == TAL_DeclChunk &&
|
||||
attr.getScopeName() && attr.getScopeName()->isStr("gnu")) {
|
||||
state.getSema().Diag(attr.getLoc(),
|
||||
diag::warn_cxx11_gnu_attribute_on_type)
|
||||
<< attr.getName();
|
||||
continue;
|
||||
}
|
||||
|
||||
// If this is an attribute we can handle, do so now,
|
||||
// otherwise, add it to the FnAttrs list for rechaining.
|
||||
switch (attr.getKind()) {
|
||||
|
|
@ -4225,7 +4249,7 @@ static void processTypeAttrs(TypeProcessingState &state, QualType &type,
|
|||
|
||||
// Never process function type attributes as part of the
|
||||
// declaration-specifiers.
|
||||
if (isDeclSpec)
|
||||
if (TAL == TAL_DeclSpec)
|
||||
distributeFunctionTypeAttrFromDeclSpec(state, attr, type);
|
||||
|
||||
// Otherwise, handle the possible delays.
|
||||
|
|
|
|||
|
|
@ -247,14 +247,18 @@ enum class __attribute__((visibility("hidden"))) SecretKeepers {
|
|||
enum class [[]] EvenMoreSecrets {};
|
||||
|
||||
namespace arguments {
|
||||
// FIXME: remove the sema warnings after migrating existing gnu attributes to c++11 syntax.
|
||||
void f(const char*, ...) [[gnu::format(printf, 1, 2)]]; // expected-warning {{unknown attribute 'format' ignored}}
|
||||
void f[[gnu::format(printf, 1, 2)]](const char*, ...);
|
||||
void g() [[unknown::foo(currently arguments of attributes from unknown namespace other than 'gnu' namespace are ignored... blah...)]]; // expected-warning {{unknown attribute 'foo' ignored}}
|
||||
}
|
||||
|
||||
// forbid attributes on decl specifiers
|
||||
// Forbid attributes on decl specifiers.
|
||||
unsigned [[gnu::used]] static int [[gnu::unused]] v1; // expected-warning {{attribute 'unused' ignored, because it is not attached to a declaration}} \
|
||||
expected-error {{an attribute list cannot appear here}}
|
||||
typedef [[gnu::used]] unsigned long [[gnu::unused]] v2; // expected-warning {{attribute 'unused' ignored, because it is not attached to a declaration}} \
|
||||
expected-error {{an attribute list cannot appear here}}
|
||||
int [[carries_dependency]] foo(int [[carries_dependency]] x); // expected-warning 2{{attribute 'carries_dependency' ignored, because it is not attached to a declaration}}
|
||||
|
||||
// Forbid [[gnu::...]] attributes on declarator chunks.
|
||||
int *[[gnu::unused]] v3; // expected-warning {{attribute 'unused' ignored}}
|
||||
int v4[2][[gnu::unused]]; // expected-warning {{attribute 'unused' ignored}}
|
||||
int v5()[[gnu::unused]]; // expected-warning {{attribute 'unused' ignored}}
|
||||
|
|
|
|||
Loading…
Reference in New Issue