maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Don't compute linkage for a declaration as part of the #pragma weak 

forward-declaration support unless there's really a mapping for that
name.

llvm-svn: 117426
This commit is contained in:
John McCall 2010-10-27 00:59:00 +00:00
parent 79e1407c11
commit 6fe024052b
1 changed files with 12 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
clang/lib/Sema/SemaDeclAttr.cpp
View File

@ -2467,14 +2467,18 @@ void Sema::DeclApplyPragmaWeak(Scope *S, NamedDecl *ND, WeakInfo &W) {
/// it, apply them to D. This is a bit tricky because PD can have attributes
/// specified in many different places, and we need to find and apply them all.
void Sema::ProcessDeclAttributes(Scope *S, Decl *D, const Declarator &PD) {
// Handle #pragma weak
if (NamedDecl *ND = dyn_cast<NamedDecl>(D)) {
if (ND->hasLinkage()) {
WeakInfo W = WeakUndeclaredIdentifiers.lookup(ND->getIdentifier());
if (W != WeakInfo()) {
// Identifier referenced by #pragma weak before it was declared
DeclApplyPragmaWeak(S, ND, W);
WeakUndeclaredIdentifiers[ND->getIdentifier()] = W;
// It's valid to "forward-declare" #pragma weak, in which case we
// have to do this.
if (!WeakUndeclaredIdentifiers.empty()) {
if (NamedDecl *ND = dyn_cast<NamedDecl>(D)) {
if (IdentifierInfo *Id = ND->getIdentifier()) {
llvm::DenseMap<IdentifierInfo*,WeakInfo>::iterator I
= WeakUndeclaredIdentifiers.find(Id);
if (I != WeakUndeclaredIdentifiers.end() && ND->hasLinkage()) {
WeakInfo W = I->second;
DeclApplyPragmaWeak(S, ND, W);
WeakUndeclaredIdentifiers[Id] = W;
}
}
}
}