[llvm-branch-commits] [clang] release/18.x: [Headers] Don't declare unreachable() from stddef.h in C++ (#86748) (PR #87696)
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Thu Apr 4 13:13:29 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
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Author: None (llvmbot)
<details>
<summary>Changes</summary>
Backport df69a305253f1d1b4a4066055a07101a4cc03e55
Requested by: @<!-- -->ian-twilightcoder
---
Full diff: https://github.com/llvm/llvm-project/pull/87696.diff
1 Files Affected:
- (modified) clang/lib/Headers/__stddef_unreachable.h (+4)
``````````diff
diff --git a/clang/lib/Headers/__stddef_unreachable.h b/clang/lib/Headers/__stddef_unreachable.h
index 518580c92d3f5d..61df43e9732f8a 100644
--- a/clang/lib/Headers/__stddef_unreachable.h
+++ b/clang/lib/Headers/__stddef_unreachable.h
@@ -7,6 +7,8 @@
*===-----------------------------------------------------------------------===
*/
+#ifndef __cplusplus
+
/*
* When -fbuiltin-headers-in-system-modules is set this is a non-modular header
* and needs to behave as if it was textual.
@@ -15,3 +17,5 @@
(__has_feature(modules) && !__building_module(_Builtin_stddef))
#define unreachable() __builtin_unreachable()
#endif
+
+#endif
``````````
</details>
https://github.com/llvm/llvm-project/pull/87696
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