[PATCH] D12904: fix for assertion fail for pragma weak on typedef
Alexander Musman via cfe-commits
cfe-commits at lists.llvm.org
Thu Sep 17 07:17:33 PDT 2015
amusman updated this revision to Diff 34987.
amusman added a comment.
Hi Aaron,
Thank you for review. I've updated the warning for such cases.
Regards,
Alexander
http://reviews.llvm.org/D12904
Files:
lib/Sema/Sema.cpp
lib/Sema/SemaDecl.cpp
test/CodeGen/pragma-weak.c
Index: lib/Sema/Sema.cpp
===================================================================
--- lib/Sema/Sema.cpp
+++ lib/Sema/Sema.cpp
@@ -721,8 +721,15 @@
if (WeakID.second.getUsed())
continue;
- Diag(WeakID.second.getLocation(), diag::warn_weak_identifier_undeclared)
- << WeakID.first;
+ Decl *PrevDecl = LookupSingleName(TUScope, WeakID.first, SourceLocation(),
+ LookupOrdinaryName);
+ if (PrevDecl != nullptr &&
+ !(isa<FunctionDecl>(PrevDecl) || isa<VarDecl>(PrevDecl)))
+ Diag(WeakID.second.getLocation(), diag::warn_attribute_wrong_decl_type)
+ << "weak" << ExpectedVariableOrFunction;
+ else
+ Diag(WeakID.second.getLocation(), diag::warn_weak_identifier_undeclared)
+ << WeakID.first;
}
if (LangOpts.CPlusPlus11 &&
Index: lib/Sema/SemaDecl.cpp
===================================================================
--- lib/Sema/SemaDecl.cpp
+++ lib/Sema/SemaDecl.cpp
@@ -14530,7 +14530,7 @@
LookupOrdinaryName);
WeakInfo W = WeakInfo(Name, NameLoc);
- if (PrevDecl) {
+ if (PrevDecl && (isa<FunctionDecl>(PrevDecl) || isa<VarDecl>(PrevDecl))) {
if (!PrevDecl->hasAttr<AliasAttr>())
if (NamedDecl *ND = dyn_cast<NamedDecl>(PrevDecl))
DeclApplyPragmaWeak(TUScope, ND, W);
Index: test/CodeGen/pragma-weak.c
===================================================================
--- test/CodeGen/pragma-weak.c
+++ test/CodeGen/pragma-weak.c
@@ -53,12 +53,14 @@
#pragma weak unused // expected-warning {{weak identifier 'unused' never declared}}
#pragma weak unused_alias = __unused_alias // expected-warning {{weak identifier '__unused_alias' never declared}}
-#pragma weak td // expected-warning {{weak identifier 'td' never declared}}
+#pragma weak td // expected-warning {{weak attribute only applies to variables and functions}}
typedef int td;
-#pragma weak td2 = __td2 // expected-warning {{weak identifier '__td2' never declared}}
+#pragma weak td2 = __td2 // expected-warning {{weak attribute only applies to variables and functions}}
typedef int __td2;
+typedef int __td3;
+#pragma weak td3 = __td3 // expected-warning {{weak attribute only applies to variables and functions}}
///// test weird cases
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