diff options
| -rw-r--r-- | include/clang/Basic/DiagnosticSemaKinds.td | 2 | ||||
| -rw-r--r-- | lib/Sema/Sema.h | 14 | ||||
| -rw-r--r-- | lib/Sema/SemaDecl.cpp | 30 |
3 files changed, 45 insertions, 1 deletions
diff --git a/include/clang/Basic/DiagnosticSemaKinds.td b/include/clang/Basic/DiagnosticSemaKinds.td index 41e73c1788..4b9b7037e1 100644 --- a/include/clang/Basic/DiagnosticSemaKinds.td +++ b/include/clang/Basic/DiagnosticSemaKinds.td @@ -131,6 +131,8 @@ def warn_pragma_pack_pop_failed : Warning<"#pragma pack(pop, ...) failed: %0">; def warn_pragma_unused_expected_localvar : Warning< "only local variables can be arguments to '#pragma unused'">; +def err_unsupported_pragma_weak : Error< + "using '#pragma weak' to refer to an undeclared identifier is not yet supported">; /// Objective-C parser diagnostics def err_duplicate_class_def : Error< diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h index d8cc01ecf6..fef476f76a 100644 --- a/lib/Sema/Sema.h +++ b/lib/Sema/Sema.h @@ -2449,7 +2449,19 @@ public: SourceLocation PragmaLoc, SourceLocation LParenLoc, SourceLocation RParenLoc); - + + /// ActOnPragmaPack - Called on well formed #pragma weak ident. + virtual void ActOnPragmaWeakID(IdentifierInfo* WeakName, + SourceLocation PragmaLoc, + SourceLocation WeakNameLoc); + + /// ActOnPragmaPack - Called on well formed #pragma weak ident = ident. + virtual void ActOnPragmaWeakAlias(IdentifierInfo* WeakName, + IdentifierInfo* AliasName, + SourceLocation PragmaLoc, + SourceLocation WeakNameLoc, + SourceLocation AliasNameLoc); + /// getPragmaPackAlignment() - Return the current alignment as specified by /// the current #pragma pack directive, or 0 if none is currently active. unsigned getPragmaPackAlignment() const; diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp index a39ff47cdb..18636a4ab1 100644 --- a/lib/Sema/SemaDecl.cpp +++ b/lib/Sema/SemaDecl.cpp @@ -4414,3 +4414,33 @@ Sema::DeclPtrTy Sema::ActOnFileScopeAsmDecl(SourceLocation Loc, CurContext->addDecl(Context, New); return DeclPtrTy::make(New); } + +void Sema::ActOnPragmaWeakID(IdentifierInfo* Name, + SourceLocation PragmaLoc, + SourceLocation NameLoc) { + Decl *PrevDecl = LookupName(TUScope, Name, LookupOrdinaryName); + + // FIXME: This implementation is an ugly hack! + if (PrevDecl) { + PrevDecl->addAttr(::new (Context) WeakAttr()); + return; + } + Diag(PragmaLoc, diag::err_unsupported_pragma_weak); + return; +} + +void Sema::ActOnPragmaWeakAlias(IdentifierInfo* Name, + IdentifierInfo* AliasName, + SourceLocation PragmaLoc, + SourceLocation NameLoc, + SourceLocation AliasNameLoc) { + Decl *PrevDecl = LookupName(TUScope, Name, LookupOrdinaryName); + + // FIXME: This implementation is an ugly hack! + if (PrevDecl) { + PrevDecl->addAttr(::new (Context) AliasAttr(AliasName->getName())); + return; + } + Diag(PragmaLoc, diag::err_unsupported_pragma_weak); + return; +} |