diff --git a/clang/include/clang/Basic/LangOptions.def b/clang/include/clang/Basic/LangOptions.def index 6ac8d496f1494..08d98a77e0252 100644 --- a/clang/include/clang/Basic/LangOptions.def +++ b/clang/include/clang/Basic/LangOptions.def @@ -491,6 +491,8 @@ LANGOPT(CheckConstexprFunctionBodies, 1, 1, Benign, LANGOPT(BoundsSafety, 1, 0, NotCompatible, "Bounds safety extension for C") +LANGOPT(EnableLifetimeSafety, 1, 0, NotCompatible, "Experimental lifetime safety analysis for C++") + LANGOPT(PreserveVec3Type, 1, 0, NotCompatible, "Preserve 3-component vector type") #undef LANGOPT diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td index a8c1b5dd8ab3b..8e6fd5f99c503 100644 --- a/clang/include/clang/Driver/Options.td +++ b/clang/include/clang/Driver/Options.td @@ -1917,6 +1917,14 @@ defm bounds_safety : BoolFOption< BothFlags<[], [CC1Option], " experimental bounds safety extension for C">>; +defm lifetime_safety : BoolFOption< + "experimental-lifetime-safety", + LangOpts<"EnableLifetimeSafety">, DefaultFalse, + PosFlag, + NegFlag, + BothFlags<[], [CC1Option], + " experimental lifetime safety for C++">>; + defm addrsig : BoolFOption<"addrsig", CodeGenOpts<"Addrsig">, DefaultFalse, PosFlag, diff --git a/clang/lib/Sema/AnalysisBasedWarnings.cpp b/clang/lib/Sema/AnalysisBasedWarnings.cpp index 5eba024e83634..20dfe19a8f968 100644 --- a/clang/lib/Sema/AnalysisBasedWarnings.cpp +++ b/clang/lib/Sema/AnalysisBasedWarnings.cpp @@ -2902,8 +2902,7 @@ void clang::sema::AnalysisBasedWarnings::IssueWarnings( .setAlwaysAdd(Stmt::UnaryOperatorClass); } - bool EnableLifetimeSafetyAnalysis = !Diags.isIgnored( - diag::warn_experimental_lifetime_safety_dummy_warning, D->getBeginLoc()); + bool EnableLifetimeSafetyAnalysis = S.getLangOpts().EnableLifetimeSafety; // Install the logical handler. std::optional LEH; if (LogicalErrorHandler::hasActiveDiagnostics(Diags, D->getBeginLoc())) { diff --git a/clang/test/Sema/warn-lifetime-safety-dataflow.cpp b/clang/test/Sema/warn-lifetime-safety-dataflow.cpp index 0e98904ade86a..1c7ea5b2adfaf 100644 --- a/clang/test/Sema/warn-lifetime-safety-dataflow.cpp +++ b/clang/test/Sema/warn-lifetime-safety-dataflow.cpp @@ -1,4 +1,4 @@ -// RUN: %clang_cc1 -mllvm -debug-only=LifetimeFacts,LifetimeLoanPropagation -Wexperimental-lifetime-safety %s 2>&1 | FileCheck %s +// RUN: %clang_cc1 -fexperimental-lifetime-safety -mllvm -debug-only=LifetimeFacts,LifetimeLoanPropagation -Wexperimental-lifetime-safety %s 2>&1 | FileCheck %s // REQUIRES: asserts struct MyObj {