[clang] [-Wunsafe-buffer-usage] Introduce std::array fixits (PR #80084)

[Artem Dergachev via cfe-commits]

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@@ -61,6 +61,7 @@ void testArraySubscripts(int *p, int **pp) {
       );
 
     int a[10];          // expected-warning{{'a' is an unsafe buffer that does not perform bounds checks}}
+                        // expected-note at -1{{change type of 'a' to 'std::array' to harden it}}
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haoNoQ wrote:

We'll probably have a broader discussion about wording but before I forget: "to harden it" may be misleading because we don't know/check whether library hardening is actually turned on.

https://github.com/llvm/llvm-project/pull/80084