https://github.com/osamakader updated https://github.com/llvm/llvm-project/pull/210085
>From ae6df644f97e3f2347ec992194385949324e55e0 Mon Sep 17 00:00:00 2001 From: Osama Abdelkader <[email protected]> Date: Thu, 16 Jul 2026 17:38:30 +0200 Subject: [PATCH 1/2] [Clang] Avoid querying tag definitions for invalid DeclSpecs Guard hasTagDefinition() against invalid type-specifier state so recovery from invalid auto/tag combinations does not assert. Signed-off-by: Osama Abdelkader <[email protected]> --- clang/lib/Sema/DeclSpec.cpp | 2 +- clang/test/SemaCXX/auto-cxx0x.cpp | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/clang/lib/Sema/DeclSpec.cpp b/clang/lib/Sema/DeclSpec.cpp index 4d20657d5e517..9df12d0c4ce75 100644 --- a/clang/lib/Sema/DeclSpec.cpp +++ b/clang/lib/Sema/DeclSpec.cpp @@ -431,7 +431,7 @@ void DeclSpec::forEachQualifier( } bool DeclSpec::hasTagDefinition() const { - if (!TypeSpecOwned) + if (!TypeSpecOwned || !isDeclRep((TST)TypeSpecType)) return false; return cast<TagDecl>(getRepAsDecl())->isCompleteDefinition(); } diff --git a/clang/test/SemaCXX/auto-cxx0x.cpp b/clang/test/SemaCXX/auto-cxx0x.cpp index fa953f35723ef..ff2c98fce7523 100644 --- a/clang/test/SemaCXX/auto-cxx0x.cpp +++ b/clang/test/SemaCXX/auto-cxx0x.cpp @@ -14,6 +14,9 @@ void f() { struct PR209000 { } auto; // expected-error {{'auto' cannot be combined with a type specifier}} +auto union { // expected-error {{cannot combine with previous 'auto' declaration specifier}} +} foo<>; // expected-error {{no template named 'foo'}} + typedef auto PR25449(); // expected-error {{'auto' not allowed in typedef}} thread_local auto x; // expected-error {{requires an initializer}} >From da2d9c93b52e457fb88f303f07aabfd1dc468a4b Mon Sep 17 00:00:00 2001 From: Osama Abdelkader <[email protected]> Date: Mon, 20 Jul 2026 15:51:48 +0200 Subject: [PATCH 2/2] [Clang] update ReleaseNotes with #GH210014 fix Signed-off-by: Osama Abdelkader <[email protected]> --- clang/docs/ReleaseNotes.md | 3 +++ 1 file changed, 3 insertions(+) diff --git a/clang/docs/ReleaseNotes.md b/clang/docs/ReleaseNotes.md index 052838ef0af0d..2bb80455b85a6 100644 --- a/clang/docs/ReleaseNotes.md +++ b/clang/docs/ReleaseNotes.md @@ -155,6 +155,9 @@ latest release, please see the [Clang Web Site](https://clang.llvm.org) or the #### Miscellaneous Clang Crashes Fixed +- Fixed a crash when parsing invalid C++ declarations that combine `auto` with + an anonymous tag definition. (#GH210014) + ### OpenACC Specific Changes ### OpenCL Specific Changes _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
