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-rw-r--r--include/clang/Basic/DiagnosticParseKinds.td1
-rw-r--r--include/clang/Basic/DiagnosticSemaKinds.td9
-rw-r--r--lib/Parse/DeclSpec.cpp13
-rw-r--r--lib/Sema/SemaDecl.cpp36
4 files changed, 39 insertions, 20 deletions
diff --git a/include/clang/Basic/DiagnosticParseKinds.td b/include/clang/Basic/DiagnosticParseKinds.td
index 5e97faa96d..e5d7a1d1bd 100644
--- a/include/clang/Basic/DiagnosticParseKinds.td
+++ b/include/clang/Basic/DiagnosticParseKinds.td
@@ -35,7 +35,6 @@ def err_invalid_short_spec : Error<"'short %0' is invalid">;
def err_invalid_long_spec : Error<"'long %0' is invalid">;
def err_invalid_longlong_spec : Error<"'long long %0' is invalid">;
def err_invalid_complex_spec : Error<"'_Complex %0' is invalid">;
-def err_invalid_thread_spec : Error<"'__thread %0' is invalid">;
def ext_ident_list_in_param : Extension<
"type-less parameter names in function declaration">;
diff --git a/include/clang/Basic/DiagnosticSemaKinds.td b/include/clang/Basic/DiagnosticSemaKinds.td
index 8ee940310b..1c2b0e915c 100644
--- a/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/include/clang/Basic/DiagnosticSemaKinds.td
@@ -93,6 +93,11 @@ def warn_use_out_of_scope_declaration : Warning<
def err_inline_non_function : Error<
"'inline' can only appear on functions">;
+def err_invalid_thread : Error<
+ "'__thread' is only allowed on variable declarations">;
+def err_thread_non_global : Error<
+ "'__thread' variables must have global storage">;
+
/// Built-in functions.
def ext_implicit_lib_function_decl : ExtWarn<
"implicitly declaring C library function '%0' with type %1">;
@@ -743,6 +748,10 @@ def err_static_non_static : Error<
"static declaration of %0 follows non-static declaration">;
def err_non_static_static : Error<
"non-static declaration of %0 follows static declaration">;
+def err_non_thread_thread : Error<
+ "non-thread-local declaration of %0 follows thread-local declaration">;
+def err_thread_non_thread : Error<
+ "thread-local declaration of %0 follows non-thread-local declaration">;
def err_redefinition_different_type : Error<
"redefinition of %0 with a different type">;
def err_redefinition_different_kind : Error<
diff --git a/lib/Parse/DeclSpec.cpp b/lib/Parse/DeclSpec.cpp
index 40675de989..bcf14d916c 100644
--- a/lib/Parse/DeclSpec.cpp
+++ b/lib/Parse/DeclSpec.cpp
@@ -94,6 +94,7 @@ const char *DeclSpec::getSpecifierName(DeclSpec::SCS S) {
case DeclSpec::SCS_static: return "static";
case DeclSpec::SCS_auto: return "auto";
case DeclSpec::SCS_register: return "register";
+ case DeclSpec::SCS_private_extern: return "__private_extern__";
case DeclSpec::SCS_mutable: return "mutable";
}
}
@@ -345,18 +346,6 @@ void DeclSpec::Finish(Diagnostic &D, Preprocessor &PP) {
TypeSpecComplex = TSC_unspecified;
}
}
-
- // Verify __thread.
- if (SCS_thread_specified) {
- if (StorageClassSpec == SCS_unspecified) {
- StorageClassSpec = SCS_extern; // '__thread int' -> 'extern __thread int'
- } else if (StorageClassSpec != SCS_extern &&
- StorageClassSpec != SCS_static) {
- Diag(D, getStorageClassSpecLoc(), SrcMgr, diag::err_invalid_thread_spec)
- << getSpecifierName((SCS)StorageClassSpec);
- SCS_thread_specified = false;
- }
- }
// Okay, now we can infer the real type.
diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index 7ed0e2dd31..90df45a5b2 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -917,6 +917,14 @@ bool Sema::MergeVarDecl(VarDecl *New, Decl *OldD) {
return true;
}
+ if (New->isThreadSpecified() && !Old->isThreadSpecified()) {
+ Diag(New->getLocation(), diag::err_thread_non_thread) << New->getDeclName();
+ Diag(Old->getLocation(), diag::note_previous_definition);
+ } else if (!New->isThreadSpecified() && Old->isThreadSpecified()) {
+ Diag(New->getLocation(), diag::err_non_thread_thread) << New->getDeclName();
+ Diag(Old->getLocation(), diag::note_previous_definition);
+ }
+
// Keep a chain of previous declarations.
New->setPreviousDeclaration(Old);
@@ -962,6 +970,7 @@ Sema::DeclPtrTy Sema::ParsedFreeStandingDeclSpec(Scope *S, DeclSpec &DS) {
// FIXME: Error on auto/register at file scope
// FIXME: Error on inline/virtual/explicit
// FIXME: Error on invalid restrict
+ // FIXME: Warn on useless __thread
// FIXME: Warn on useless const/volatile
// FIXME: Warn on useless static/extern/typedef/private_extern/mutable
// FIXME: Warn on useless attributes
@@ -1551,6 +1560,9 @@ Sema::ActOnTypedefDeclarator(Scope* S, Declarator& D, DeclContext* DC,
DiagnoseFunctionSpecifiers(D);
+ if (D.getDeclSpec().isThreadSpecified())
+ Diag(D.getDeclSpec().getThreadSpecLoc(), diag::err_invalid_thread);
+
TypedefDecl *NewTD = ParseTypedefDecl(S, D, R);
if (!NewTD) return 0;
@@ -1694,7 +1706,6 @@ Sema::ActOnVariableDeclarator(Scope* S, Declarator& D, DeclContext* DC,
DiagnoseFunctionSpecifiers(D);
- bool ThreadSpecified = D.getDeclSpec().isThreadSpecified();
if (!DC->isRecord() && S->getFnParent() == 0) {
// C99 6.9p2: The storage-class specifiers auto and register shall not
// appear in the declaration specifiers in an external declaration.
@@ -1719,7 +1730,13 @@ Sema::ActOnVariableDeclarator(Scope* S, Declarator& D, DeclContext* DC,
II, R, SC,
// FIXME: Move to DeclGroup...
D.getDeclSpec().getSourceRange().getBegin());
- NewVD->setThreadSpecified(ThreadSpecified);
+
+ if (D.getDeclSpec().isThreadSpecified()) {
+ if (NewVD->hasLocalStorage())
+ Diag(D.getDeclSpec().getThreadSpecLoc(), diag::err_thread_non_global);
+ else
+ NewVD->setThreadSpecified(true);
+ }
// Set the lexical context. If the declarator has a C++ scope specifier, the
// lexical context will be different from the semantic context.
@@ -1913,6 +1930,9 @@ Sema::ActOnFunctionDeclarator(Scope* S, Declarator& D, DeclContext* DC,
case DeclSpec::SCS_private_extern: SC = FunctionDecl::PrivateExtern;break;
}
+ if (D.getDeclSpec().isThreadSpecified())
+ Diag(D.getDeclSpec().getThreadSpecLoc(), diag::err_invalid_thread);
+
bool isInline = D.getDeclSpec().isInlineSpecified();
bool isVirtual = D.getDeclSpec().isVirtualSpecified();
bool isExplicit = D.getDeclSpec().isExplicitSpecified();
@@ -2683,11 +2703,10 @@ Sema::ActOnParamDeclarator(Scope *S, Declarator &D) {
diag::err_invalid_storage_class_in_func_decl);
D.getMutableDeclSpec().ClearStorageClassSpecs();
}
- if (DS.isThreadSpecified()) {
- Diag(DS.getThreadSpecLoc(),
- diag::err_invalid_storage_class_in_func_decl);
- D.getMutableDeclSpec().ClearStorageClassSpecs();
- }
+
+ if (D.getDeclSpec().isThreadSpecified())
+ Diag(D.getDeclSpec().getThreadSpecLoc(), diag::err_invalid_thread);
+
DiagnoseFunctionSpecifiers(D);
// Check that there are no default arguments inside the type of this
@@ -3574,6 +3593,9 @@ FieldDecl *Sema::HandleField(Scope *S, RecordDecl *Record,
DiagnoseFunctionSpecifiers(D);
+ if (D.getDeclSpec().isThreadSpecified())
+ Diag(D.getDeclSpec().getThreadSpecLoc(), diag::err_invalid_thread);
+
NamedDecl *PrevDecl = LookupName(S, II, LookupMemberName, true);
if (PrevDecl && !isDeclInScope(PrevDecl, Record, S))
PrevDecl = 0;
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-07-02 20:07:24 +0000