[clang] Added support for `__has_feature(bounds_safety)` macro evaluation (PR #182994)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Abhijeet (abhijeetsharma200)

<details>
<summary>Changes</summary>

Fixes #<!-- -->182948

---
Full diff: https://github.com/llvm/llvm-project/pull/182994.diff


2 Files Affected:

- (modified) clang/include/clang/Basic/Features.def (+1) 
- (added) clang/test/Preprocessor/bounds-safety-feature.c (+10) 


``````````diff
diff --git a/clang/include/clang/Basic/Features.def b/clang/include/clang/Basic/Features.def
index ea5198a079254..18875db812075 100644
--- a/clang/include/clang/Basic/Features.def
+++ b/clang/include/clang/Basic/Features.def
@@ -324,6 +324,7 @@ FEATURE(shadow_call_stack,
 FEATURE(tls, PP.getTargetInfo().isTLSSupported())
 FEATURE(underlying_type, LangOpts.CPlusPlus)
 FEATURE(experimental_library, LangOpts.ExperimentalLibrary)
+FEATURE(bounds_safety, LangOpts.BoundsSafety)
 
 // C11 features supported by other languages as extensions.
 EXTENSION(c_alignas, true)
diff --git a/clang/test/Preprocessor/bounds-safety-feature.c b/clang/test/Preprocessor/bounds-safety-feature.c
new file mode 100644
index 0000000000000..dd84d043a17f5
--- /dev/null
+++ b/clang/test/Preprocessor/bounds-safety-feature.c
@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 -E %s -fexperimental-bounds-safety | FileCheck %s --check-prefix=ENABLED
+// RUN: %clang_cc1 -E %s                             | FileCheck %s --check-prefix=DISABLED
+
+#if __has_feature(bounds_safety)
+// ENABLED: has_bounds_safety
+void has_bounds_safety() {}
+#else
+// DISABLED: no_bounds_safety
+void no_bounds_safety() {}
+#endif

``````````

</details>


https://github.com/llvm/llvm-project/pull/182994