Author: v1nh1shungry Date: 2023-01-20T17:11:07+08:00 New Revision: ea4fd668c2cd88d13b36a5d64e3dedb1106340bc
URL: https://github.com/llvm/llvm-project/commit/ea4fd668c2cd88d13b36a5d64e3dedb1106340bc DIFF: https://github.com/llvm/llvm-project/commit/ea4fd668c2cd88d13b36a5d64e3dedb1106340bc.diff LOG: [clang] fix crash on generic lambda with lambda in decltype Relevant issue: https://github.com/llvm/llvm-project/issues/59771 During the instantiation of a generic lambda, a non-generic lambda in the trailing `decltype` is a `DeclContext` but not a dependent context, so we shouldn't call `PerformDependentDiagnostics` on it. Differential Revision: https://reviews.llvm.org/D140838 Added: Modified: clang/lib/Sema/SemaTemplateInstantiate.cpp clang/test/SemaCXX/lambda-unevaluated.cpp Removed: ################################################################################ diff --git a/clang/lib/Sema/SemaTemplateInstantiate.cpp b/clang/lib/Sema/SemaTemplateInstantiate.cpp index 89502937cc30b..2790e78aa53a3 100644 --- a/clang/lib/Sema/SemaTemplateInstantiate.cpp +++ b/clang/lib/Sema/SemaTemplateInstantiate.cpp @@ -1231,7 +1231,7 @@ namespace { // We recreated a local declaration, but not by instantiating it. There // may be pending dependent diagnostics to produce. - if (auto *DC = dyn_cast<DeclContext>(Old)) + if (auto *DC = dyn_cast<DeclContext>(Old); DC && DC->isDependentContext()) SemaRef.PerformDependentDiagnostics(DC, TemplateArgs); } diff --git a/clang/test/SemaCXX/lambda-unevaluated.cpp b/clang/test/SemaCXX/lambda-unevaluated.cpp index 6d8c3b88c2eaf..da00cb48a87fd 100644 --- a/clang/test/SemaCXX/lambda-unevaluated.cpp +++ b/clang/test/SemaCXX/lambda-unevaluated.cpp @@ -142,3 +142,7 @@ using c = decltype([]() static noexcept(noexcept([] { return 0; }())) { return 0 using d = decltype(sizeof([] static { return 0; })); } + +namespace lambda_in_trailing_decltype { +auto x = ([](auto) -> decltype([] {}()) {}(0), 2); +} _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
