66 lines
2.6 KiB
Diff
66 lines
2.6 KiB
Diff
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From bd2e848f15c0f25231126eb10cb0ab350717dfc0 Mon Sep 17 00:00:00 2001
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From: Nikita Popov <npopov@redhat.com>
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Date: Fri, 19 Jan 2024 12:09:13 +0100
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Subject: [PATCH] [Clang] Fix build with GCC 14 on ARM
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GCC 14 defines `__arm_streaming` as a macro expanding to
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`[[arm::streaming]]`. Due to the nested macro use, this gets
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expanded prior to concatenation.
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It doesn't look like C++ has a really clean way to prevent
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macro expansion. The best I have found is to use `EMPTY ## X` where
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`EMPTY` is an empty macro argument, so this is the hack I'm
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implementing here.
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Fixes https://github.com/llvm/llvm-project/issues/78691.
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---
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clang/include/clang/Basic/TokenKinds.def | 3 ++-
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clang/include/clang/Basic/TokenKinds.h | 2 +-
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clang/utils/TableGen/ClangAttrEmitter.cpp | 2 +-
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3 files changed, 4 insertions(+), 3 deletions(-)
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diff --git a/clang/include/clang/Basic/TokenKinds.def b/clang/include/clang/Basic/TokenKinds.def
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index ef0dad0f2dcd..3add13c079f3 100644
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--- a/clang/include/clang/Basic/TokenKinds.def
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+++ b/clang/include/clang/Basic/TokenKinds.def
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@@ -752,8 +752,9 @@ KEYWORD(__builtin_available , KEYALL)
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KEYWORD(__builtin_sycl_unique_stable_name, KEYSYCL)
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// Keywords defined by Attr.td.
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+// The "EMPTY ## X" is used to prevent early macro-expansion of the keyword.
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#ifndef KEYWORD_ATTRIBUTE
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-#define KEYWORD_ATTRIBUTE(X) KEYWORD(X, KEYALL)
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+#define KEYWORD_ATTRIBUTE(X, EMPTY) KEYWORD(EMPTY ## X, KEYALL)
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#endif
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#include "clang/Basic/AttrTokenKinds.inc"
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diff --git a/clang/include/clang/Basic/TokenKinds.h b/clang/include/clang/Basic/TokenKinds.h
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index e4857405bc7f..ff117bd5afc5 100644
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--- a/clang/include/clang/Basic/TokenKinds.h
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+++ b/clang/include/clang/Basic/TokenKinds.h
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@@ -109,7 +109,7 @@ bool isPragmaAnnotation(TokenKind K);
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inline constexpr bool isRegularKeywordAttribute(TokenKind K) {
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return (false
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-#define KEYWORD_ATTRIBUTE(X) || (K == tok::kw_##X)
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+#define KEYWORD_ATTRIBUTE(X, ...) || (K == tok::kw_##X)
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#include "clang/Basic/AttrTokenKinds.inc"
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);
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}
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diff --git a/clang/utils/TableGen/ClangAttrEmitter.cpp b/clang/utils/TableGen/ClangAttrEmitter.cpp
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index b5813c6abc2b..79db17501b64 100644
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--- a/clang/utils/TableGen/ClangAttrEmitter.cpp
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+++ b/clang/utils/TableGen/ClangAttrEmitter.cpp
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@@ -3430,7 +3430,7 @@ void EmitClangAttrTokenKinds(RecordKeeper &Records, raw_ostream &OS) {
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"RegularKeyword attributes with arguments are not "
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"yet supported");
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OS << "KEYWORD_ATTRIBUTE("
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- << S.getSpellingRecord().getValueAsString("Name") << ")\n";
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+ << S.getSpellingRecord().getValueAsString("Name") << ", )\n";
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}
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OS << "#undef KEYWORD_ATTRIBUTE\n";
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}
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--
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2.43.0
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