[NFC] Add release notes for -Wunsafe-buffer-usage-in-libc-call

[ziqingluo-90]

-Wunsafe-buffer-usage-in-libc-call is a subgroup of -Wunsafe-buffer-usage that warns about unsafe libc function calls.

[llvmbot]

@llvm/pr-subscribers-clang

Author: Ziqing Luo (ziqingluo-90)

Changes

-Wunsafe-buffer-usage-in-libc-call is a subgroup of -Wunsafe-buffer-usage that warns about unsafe libc function calls.

---

Full diff: https://github.com/llvm/llvm-project/pull/126975.diff

1 Files Affected:

• (modified) clang/docs/ReleaseNotes.rst (+3)

diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 6344c4b36e357..0e1cacaa76a35 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -135,6 +135,9 @@ Improvements to Clang's diagnostics
 - Fixed a bug where Clang's Analysis did not correctly model the destructor behavior of ``union`` members (#GH119415).
 - A statement attribute applied to a ``case`` label no longer suppresses
   'bypassing variable initialization' diagnostics (#84072).
+- The ``-Wunsafe-buffer-usage`` warning has been updated to warn
+  about unsafe libc function calls.  Those new warnings are emitted
+  under the subgroup ``-Wunsafe-buffer-usage-in-libc-call``.
 
 Improvements to Clang's time-trace
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