================
@@ -12383,6 +12383,13 @@ def warn_unsafe_buffer_operation : Warning<
   "%select{unsafe pointer operation|unsafe pointer arithmetic|"
   "unsafe buffer access|function introduces unsafe buffer manipulation|unsafe 
invocation of span::data}0">,
   InGroup<UnsafeBufferUsage>, DefaultIgnore;
+def warn_unsafe_buffer_libc_call : Warning<
+  "function %0 introduces unsafe buffer access">,
+  InGroup<UnsafeBufferUsage>, DefaultIgnore;
+def note_unsafe_buffer_printf_call : Note<
+  "%select{| change to 'snprintf' for explicit bounds checking | buffer 
pointer and size may not match"
+          "| use 'std::string::c_str' or string literal as string pointer to 
guarantee null-termination"
----------------
ziqingluo-90 wrote:

> I can also imagine that for some functions it won't be as simple as saying 
> "pointer parameter 1, 3 and 5" as it could be interplay between pointers, 
> integer parameters and buffer content.

Not sure if I understand your concern.  Could you give an example?

https://github.com/llvm/llvm-project/pull/101583
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