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Convert "#pragma unused(...)" into tokens for the parser.

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This allows us to cache a "#pragma unused" that occurs inside an inline C++ member function.
Fixes rdar://8829590&8770988.

llvm-svn: 123666
This commit is contained in:
Argyrios Kyrtzidis
2011-01-17 18:58:44 +00:00
parent 834c373e3f
commit ee56962cc1
8 changed files with 77 additions and 36 deletions
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50
clang/lib/Sema/SemaAttr.cpp
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@@ -263,37 +263,31 @@ void Sema::ActOnPragmaPack(PragmaPackKind Kind, IdentifierInfo *Name,
}
}
void Sema::ActOnPragmaUnused(const Token *Identifiers, unsigned NumIdentifiers,
Scope *curScope,
SourceLocation PragmaLoc,
SourceLocation LParenLoc,
SourceLocation RParenLoc) {
void Sema::ActOnPragmaUnused(const Token &IdTok, Scope *curScope,
SourceLocation PragmaLoc) {
for (unsigned i = 0; i < NumIdentifiers; ++i) {
const Token &Tok = Identifiers[i];
IdentifierInfo *Name = Tok.getIdentifierInfo();
LookupResult Lookup(*this, Name, Tok.getLocation(), LookupOrdinaryName);
LookupParsedName(Lookup, curScope, NULL, true);
IdentifierInfo *Name = IdTok.getIdentifierInfo();
LookupResult Lookup(*this, Name, IdTok.getLocation(), LookupOrdinaryName);
LookupParsedName(Lookup, curScope, NULL, true);
if (Lookup.empty()) {
Diag(PragmaLoc, diag::warn_pragma_unused_undeclared_var)
<< Name << SourceRange(Tok.getLocation());
continue;
}
VarDecl *VD = Lookup.getAsSingle<VarDecl>();
if (!VD || !(VD->hasLocalStorage() || VD->isStaticLocal())) {
Diag(PragmaLoc, diag::warn_pragma_unused_expected_localvar)
<< Name << SourceRange(Tok.getLocation());
continue;
}
// Warn if this was used before being marked unused.
if (VD->isUsed())
Diag(PragmaLoc, diag::warn_used_but_marked_unused) << Name;
VD->addAttr(::new (Context) UnusedAttr(Tok.getLocation(), Context));
if (Lookup.empty()) {
Diag(PragmaLoc, diag::warn_pragma_unused_undeclared_var)
<< Name << SourceRange(IdTok.getLocation());
return;
}
VarDecl *VD = Lookup.getAsSingle<VarDecl>();
if (!VD || !(VD->hasLocalStorage() || VD->isStaticLocal())) {
Diag(PragmaLoc, diag::warn_pragma_unused_expected_localvar)
<< Name << SourceRange(IdTok.getLocation());
return;
}
// Warn if this was used before being marked unused.
if (VD->isUsed())
Diag(PragmaLoc, diag::warn_used_but_marked_unused) << Name;
VD->addAttr(::new (Context) UnusedAttr(IdTok.getLocation(), Context));
}
typedef std::vector<std::pair<unsigned, SourceLocation> > VisStack;