[release/18.x][backport][libc++abi] Use __has_feature check to enable usage of thread_local for exception storage #132241
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…or exception storage (llvm#97591) Previously, we'd use HAS_THREAD_LOCAL which was never defined. Hence, we'd basically never use the code path where we use thread_local. Fixes llvm#78207
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@llvm/pr-subscribers-libcxxabi Author: Bushev Dmitry (dybv-sc) ChangesThis is a backport of original commit #97591 to 18.x release. Full diff: https://github.com/llvm/llvm-project/pull/132241.diff 1 Files Affected:
diff --git a/libcxxabi/src/cxa_exception_storage.cpp b/libcxxabi/src/cxa_exception_storage.cpp
index 3a3233a1b9272..83408c904e1f7 100644
--- a/libcxxabi/src/cxa_exception_storage.cpp
+++ b/libcxxabi/src/cxa_exception_storage.cpp
@@ -24,7 +24,7 @@ extern "C" {
} // extern "C"
} // namespace __cxxabiv1
-#elif defined(HAS_THREAD_LOCAL)
+#elif __has_feature(cxx_thread_local)
namespace __cxxabiv1 {
namespace {
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The LLVM 18 release has been done for a long time, we're working on LLVM 20 now. |
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(I'm going to tentatively close this since as I said we're not cherry-picking stuff back to LLVM 18 anymore, please reopen for more discussion) |
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This is a backport of original commit #97591 to 18.x release.