[libc-commits] [libc] [libc] Update size_t and ssize_t definitions to use __SIZE_TYPE__ and __PTRDIFF_TYPE__ respectively. (PR #143921)

[via libc-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libc

Author: None (lntue)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/143921.diff


2 Files Affected:

- (modified) libc/include/llvm-libc-types/size_t.h (+1-6) 
- (modified) libc/include/llvm-libc-types/ssize_t.h (+1-1) 


``````````diff
diff --git a/libc/include/llvm-libc-types/size_t.h b/libc/include/llvm-libc-types/size_t.h
index 3b31b0820f237..26ae68abe0ee7 100644
--- a/libc/include/llvm-libc-types/size_t.h
+++ b/libc/include/llvm-libc-types/size_t.h
@@ -9,11 +9,6 @@
 #ifndef LLVM_LIBC_TYPES_SIZE_T_H
 #define LLVM_LIBC_TYPES_SIZE_T_H
 
-// Since __need_size_t is defined, we get the definition of size_t from the
-// standalone C header stddef.h. Also, because __need_size_t is defined,
-// including stddef.h will pull only the type size_t and nothing else.
-#define __need_size_t
-#include <stddef.h>
-#undef __need_size_t
+typedef __SIZE_TYPE__ size_t;
 
 #endif // LLVM_LIBC_TYPES_SIZE_T_H
diff --git a/libc/include/llvm-libc-types/ssize_t.h b/libc/include/llvm-libc-types/ssize_t.h
index 41e4b6d2c500a..8f579e2749bac 100644
--- a/libc/include/llvm-libc-types/ssize_t.h
+++ b/libc/include/llvm-libc-types/ssize_t.h
@@ -9,6 +9,6 @@
 #ifndef LLVM_LIBC_TYPES_SSIZE_T_H
 #define LLVM_LIBC_TYPES_SSIZE_T_H
 
-typedef __INT64_TYPE__ ssize_t;
+typedef __PTRDIFF_TYPE__ ssize_t;
 
 #endif // LLVM_LIBC_TYPES_SSIZE_T_H

``````````

</details>


https://github.com/llvm/llvm-project/pull/143921