[llvm] 9f79615 - Add clang::lifetimebound annotation to llvm::function_ref (#115019)

[via llvm-commits]

Author: Haojian Wu
Date: 2024-11-07T08:24:54+01:00
New Revision: 9f796159f28775b3f93d77e173c1fd3413c2e60e

URL: https://github.com/llvm/llvm-project/commit/9f796159f28775b3f93d77e173c1fd3413c2e60e
DIFF: https://github.com/llvm/llvm-project/commit/9f796159f28775b3f93d77e173c1fd3413c2e60e.diff

LOG: Add clang::lifetimebound annotation to llvm::function_ref (#115019)

This helps catch dangling llvm::function_ref references, see #114950,
#114949, #114808, #114789

Added: 
    

Modified: 
    llvm/include/llvm/ADT/STLFunctionalExtras.h

Removed: 
    


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diff  --git a/llvm/include/llvm/ADT/STLFunctionalExtras.h b/llvm/include/llvm/ADT/STLFunctionalExtras.h
index 6f172504b3c167..3b9d40959d7142 100644
--- a/llvm/include/llvm/ADT/STLFunctionalExtras.h
+++ b/llvm/include/llvm/ADT/STLFunctionalExtras.h
@@ -16,6 +16,7 @@
 #define LLVM_ADT_STLFUNCTIONALEXTRAS_H
 
 #include "llvm/ADT/STLForwardCompat.h"
+#include "llvm/Support/Compiler.h"
 
 #include <cstdint>
 #include <type_traits>
@@ -52,7 +53,7 @@ class function_ref<Ret(Params...)> {
 
   template <typename Callable>
   function_ref(
-      Callable &&callable,
+      Callable &&callable LLVM_LIFETIME_BOUND,
       // This is not the copy-constructor.
       std::enable_if_t<!std::is_same<remove_cvref_t<Callable>,
                                      function_ref>::value> * = nullptr,