Merge err_noreturn_has_return_expr

Author: Igor S. Gerasimov

clang/include/clang/Basic/DiagnosticSemaKinds.td

@@ -8396,8 +8396,6 @@ let CategoryName = "Lambda Issue" in {
     "lambda expression in default argument cannot capture any entity">;
   def err_lambda_incomplete_result : Error<
     "incomplete result type %0 in lambda expression">;
-  def err_noreturn_lambda_has_return_expr : Error<
-    "lambda declared 'noreturn' should not return">;
   def err_access_lambda_capture : Error<
     // The ERRORs represent other special members that aren't constructors, in
     // hopes that someone will bother noticing and reporting if they appear
@@ -10587,11 +10585,13 @@ def err_ctor_dtor_returns_void : Error<
 def warn_noreturn_function_has_return_expr : Warning<
   "function %0 declared 'noreturn' should not return">,
   InGroup<InvalidNoreturn>;
-def warn_falloff_noreturn_function : Warning<
-  "function declared 'noreturn' should not return">,
+def warn_noreturn_has_return_expr : Warning<
+  "%select{function|block|lambda|coroutine}0 "
+  "declared 'noreturn' should not return">,
   InGroup<InvalidNoreturn>;
-def err_noreturn_block_has_return_expr : Error<
-  "block declared 'noreturn' should not return">;
+def err_noreturn_has_return_expr : Error<
+  "%select{function|block|lambda|coroutine}0 "
+  "declared 'noreturn' should not return">;
 def err_carries_dependency_missing_on_first_decl : Error<
   "%select{function|parameter}0 declared '[[carries_dependency]]' "
   "after its first declaration">;

clang/lib/Sema/AnalysisBasedWarnings.cpp

@@ -553,7 +553,7 @@ struct CheckFallThroughDiagnostics {
   static CheckFallThroughDiagnostics MakeForFunction(const Decl *Func) {
     CheckFallThroughDiagnostics D;
     D.FuncLoc = Func->getLocation();
-    D.diag_FallThrough_HasNoReturn = diag::warn_falloff_noreturn_function;
+    D.diag_FallThrough_HasNoReturn = diag::warn_noreturn_has_return_expr;
     D.diag_FallThrough_ReturnsNonVoid = diag::warn_falloff_nonvoid;
 
     // Don't suggest that virtual functions be marked "noreturn", since they
@@ -588,7 +588,7 @@ struct CheckFallThroughDiagnostics {
 
   static CheckFallThroughDiagnostics MakeForBlock() {
     CheckFallThroughDiagnostics D;
-    D.diag_FallThrough_HasNoReturn = diag::err_noreturn_block_has_return_expr;
+    D.diag_FallThrough_HasNoReturn = diag::err_noreturn_has_return_expr;
     D.diag_FallThrough_ReturnsNonVoid = diag::err_falloff_nonvoid;
     D.diag_NeverFallThroughOrReturn = 0;
     D.funMode = Block;
@@ -597,7 +597,7 @@ struct CheckFallThroughDiagnostics {
 
   static CheckFallThroughDiagnostics MakeForLambda() {
     CheckFallThroughDiagnostics D;
-    D.diag_FallThrough_HasNoReturn = diag::err_noreturn_lambda_has_return_expr;
+    D.diag_FallThrough_HasNoReturn = diag::err_noreturn_has_return_expr;
     D.diag_FallThrough_ReturnsNonVoid = diag::warn_falloff_nonvoid;
     D.diag_NeverFallThroughOrReturn = 0;
     D.funMode = Lambda;
@@ -610,7 +610,7 @@ struct CheckFallThroughDiagnostics {
       return (ReturnsVoid ||
               D.isIgnored(diag::warn_falloff_nonvoid, FuncLoc)) &&
              (!HasNoReturn ||
-              D.isIgnored(diag::warn_noreturn_function_has_return_expr,
+              D.isIgnored(diag::warn_noreturn_has_return_expr,
                           FuncLoc)) &&
              (!ReturnsVoid ||
               D.isIgnored(diag::warn_suggest_noreturn_block, FuncLoc));
@@ -634,12 +634,10 @@ struct CheckFallThroughDiagnostics {
 static void CheckFallThroughForBody(Sema &S, const Decl *D, const Stmt *Body,
                                     QualType BlockType,
                                     const CheckFallThroughDiagnostics &CD,
-                                    AnalysisDeclContext &AC,
-                                    sema::FunctionScopeInfo *FSI) {
+                                    AnalysisDeclContext &AC) {
 
   bool ReturnsVoid = false;
   bool HasNoReturn = false;
-  bool IsCoroutine = FSI->isCoroutine();
 
   if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
     if (const auto *CBody = dyn_cast<CoroutineBodyStmt>(Body))
@@ -668,12 +666,6 @@ static void CheckFallThroughForBody(Sema &S, const Decl *D, const Stmt *Body,
   if (CD.checkDiagnostics(Diags, ReturnsVoid, HasNoReturn))
       return;
   SourceLocation LBrace = Body->getBeginLoc(), RBrace = Body->getEndLoc();
-  auto EmitDiag = [&](SourceLocation Loc, unsigned DiagID) {
-    if (IsCoroutine)
-      S.Diag(Loc, DiagID) << FSI->CoroutinePromise->getType();
-    else
-      S.Diag(Loc, DiagID);
-  };
 
   // cpu_dispatch functions permit empty function bodies for ICC compatibility.
   if (D->getAsFunction() && D->getAsFunction()->isCPUDispatchMultiVersion())
@@ -686,13 +678,13 @@ static void CheckFallThroughForBody(Sema &S, const Decl *D, const Stmt *Body,
 
   case MaybeFallThrough:
     if (HasNoReturn)
-      EmitDiag(RBrace, CD.diag_FallThrough_HasNoReturn);
+      S.Diag(RBrace, CD.diag_FallThrough_HasNoReturn) << CD.funMode;
     else if (!ReturnsVoid)
       S.Diag(RBrace, CD.diag_FallThrough_ReturnsNonVoid) << CD.funMode << 1;
     break;
   case AlwaysFallThrough:
     if (HasNoReturn)
-      EmitDiag(RBrace, CD.diag_FallThrough_HasNoReturn);
+      S.Diag(RBrace, CD.diag_FallThrough_HasNoReturn) << CD.funMode;
     else if (!ReturnsVoid)
       S.Diag(RBrace, CD.diag_FallThrough_ReturnsNonVoid) << CD.funMode << 0;
     break;
@@ -2735,7 +2727,7 @@ void clang::sema::AnalysisBasedWarnings::IssueWarnings(
                    : (fscope->isCoroutine()
                           ? CheckFallThroughDiagnostics::MakeForCoroutine(D)
                           : CheckFallThroughDiagnostics::MakeForFunction(D)));
-    CheckFallThroughForBody(S, D, Body, BlockType, CD, AC, fscope);
+    CheckFallThroughForBody(S, D, Body, BlockType, CD, AC);
   }
 
   // Warning: check for unreachable code

clang/lib/Sema/SemaStmt.cpp

@@ -3590,7 +3590,7 @@ StmtResult Sema::ActOnCapScopeReturnStmt(SourceLocation ReturnLoc,
 
   if (auto *CurBlock = dyn_cast<BlockScopeInfo>(CurCap)) {
     if (CurBlock->FunctionType->castAs<FunctionType>()->getNoReturnAttr()) {
-      Diag(ReturnLoc, diag::err_noreturn_block_has_return_expr);
+      Diag(ReturnLoc, diag::err_noreturn_has_return_expr) << 1;
       return StmtError();
     }
   } else if (auto *CurRegion = dyn_cast<CapturedRegionScopeInfo>(CurCap)) {
@@ -3601,7 +3601,7 @@ StmtResult Sema::ActOnCapScopeReturnStmt(SourceLocation ReturnLoc,
     if (CurLambda->CallOperator->getType()
             ->castAs<FunctionType>()
             ->getNoReturnAttr()) {
-      Diag(ReturnLoc, diag::err_noreturn_lambda_has_return_expr);
+      Diag(ReturnLoc, diag::err_noreturn_has_return_expr) << 2;
       return StmtError();
     }
   }