[libcxx-commits] [libcxx] [libc++] Remove libc++'s own inttypes.h (PR #193716)
Nikolas Klauser via libcxx-commits
libcxx-commits at lists.llvm.org
Thu Apr 23 04:22:29 PDT 2026
https://github.com/philnik777 created https://github.com/llvm/llvm-project/pull/193716
None
>From 763cb8545363a69911acb1b40b7a373a5a452e6f Mon Sep 17 00:00:00 2001
From: Nikolas Klauser <nikolasklauser at berlin.de>
Date: Thu, 23 Apr 2026 13:22:06 +0200
Subject: [PATCH] [libc++] Remove libc++'s own inttypes.h
---
libcxx/include/CMakeLists.txt | 1 -
libcxx/include/cinttypes | 10 +-
libcxx/include/inttypes.h | 268 -----------------------------
libcxx/include/module.modulemap.in | 4 -
4 files changed, 2 insertions(+), 281 deletions(-)
delete mode 100644 libcxx/include/inttypes.h
diff --git a/libcxx/include/CMakeLists.txt b/libcxx/include/CMakeLists.txt
index 95d822ee8c0b3..8e799bde6cefb 100644
--- a/libcxx/include/CMakeLists.txt
+++ b/libcxx/include/CMakeLists.txt
@@ -1043,7 +1043,6 @@ set(files
functional
future
initializer_list
- inttypes.h
iomanip
ios
iosfwd
diff --git a/libcxx/include/cinttypes b/libcxx/include/cinttypes
index 4c7e2c5a5bf38..2933fd8f7edcf 100644
--- a/libcxx/include/cinttypes
+++ b/libcxx/include/cinttypes
@@ -244,14 +244,8 @@ uintmax_t wcstoumax(const wchar_t* restrict nptr, wchar_t** restrict endptr, int
// [cinttypes.syn]
# include <cstdint>
-# include <inttypes.h>
-
-# ifndef _LIBCPP_INTTYPES_H
-# error <cinttypes> tried including <inttypes.h> but didn't find libc++'s <inttypes.h> header. \
- This usually means that your header search paths are not configured properly. \
- The header search paths should contain the C++ Standard Library headers before \
- any C Standard Library, and you are probably using compiler flags that make that \
- not be the case.
+# if __has_include(<inttypes.h>)
+# include <inttypes.h>
# endif
# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/inttypes.h b/libcxx/include/inttypes.h
deleted file mode 100644
index cd487a8408275..0000000000000
--- a/libcxx/include/inttypes.h
+++ /dev/null
@@ -1,268 +0,0 @@
-// -*- C++ -*-
-//===----------------------------------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_INTTYPES_H
-// AIX system headers need inttypes.h to be re-enterable while _STD_TYPES_T
-// is defined until an inclusion of it without _STD_TYPES_T occurs, in which
-// case the header guard macro is defined.
-#if !defined(_AIX) || !defined(_STD_TYPES_T)
-# define _LIBCPP_INTTYPES_H
-#endif // _STD_TYPES_T
-
-/*
- inttypes.h synopsis
-
-This entire header is C99 / C++0X
-
-#include <stdint.h> // <cinttypes> includes <cstdint>
-
-Macros:
-
- PRId8
- PRId16
- PRId32
- PRId64
-
- PRIdLEAST8
- PRIdLEAST16
- PRIdLEAST32
- PRIdLEAST64
-
- PRIdFAST8
- PRIdFAST16
- PRIdFAST32
- PRIdFAST64
-
- PRIdMAX
- PRIdPTR
-
- PRIi8
- PRIi16
- PRIi32
- PRIi64
-
- PRIiLEAST8
- PRIiLEAST16
- PRIiLEAST32
- PRIiLEAST64
-
- PRIiFAST8
- PRIiFAST16
- PRIiFAST32
- PRIiFAST64
-
- PRIiMAX
- PRIiPTR
-
- PRIo8
- PRIo16
- PRIo32
- PRIo64
-
- PRIoLEAST8
- PRIoLEAST16
- PRIoLEAST32
- PRIoLEAST64
-
- PRIoFAST8
- PRIoFAST16
- PRIoFAST32
- PRIoFAST64
-
- PRIoMAX
- PRIoPTR
-
- PRIu8
- PRIu16
- PRIu32
- PRIu64
-
- PRIuLEAST8
- PRIuLEAST16
- PRIuLEAST32
- PRIuLEAST64
-
- PRIuFAST8
- PRIuFAST16
- PRIuFAST32
- PRIuFAST64
-
- PRIuMAX
- PRIuPTR
-
- PRIx8
- PRIx16
- PRIx32
- PRIx64
-
- PRIxLEAST8
- PRIxLEAST16
- PRIxLEAST32
- PRIxLEAST64
-
- PRIxFAST8
- PRIxFAST16
- PRIxFAST32
- PRIxFAST64
-
- PRIxMAX
- PRIxPTR
-
- PRIX8
- PRIX16
- PRIX32
- PRIX64
-
- PRIXLEAST8
- PRIXLEAST16
- PRIXLEAST32
- PRIXLEAST64
-
- PRIXFAST8
- PRIXFAST16
- PRIXFAST32
- PRIXFAST64
-
- PRIXMAX
- PRIXPTR
-
- SCNd8
- SCNd16
- SCNd32
- SCNd64
-
- SCNdLEAST8
- SCNdLEAST16
- SCNdLEAST32
- SCNdLEAST64
-
- SCNdFAST8
- SCNdFAST16
- SCNdFAST32
- SCNdFAST64
-
- SCNdMAX
- SCNdPTR
-
- SCNi8
- SCNi16
- SCNi32
- SCNi64
-
- SCNiLEAST8
- SCNiLEAST16
- SCNiLEAST32
- SCNiLEAST64
-
- SCNiFAST8
- SCNiFAST16
- SCNiFAST32
- SCNiFAST64
-
- SCNiMAX
- SCNiPTR
-
- SCNo8
- SCNo16
- SCNo32
- SCNo64
-
- SCNoLEAST8
- SCNoLEAST16
- SCNoLEAST32
- SCNoLEAST64
-
- SCNoFAST8
- SCNoFAST16
- SCNoFAST32
- SCNoFAST64
-
- SCNoMAX
- SCNoPTR
-
- SCNu8
- SCNu16
- SCNu32
- SCNu64
-
- SCNuLEAST8
- SCNuLEAST16
- SCNuLEAST32
- SCNuLEAST64
-
- SCNuFAST8
- SCNuFAST16
- SCNuFAST32
- SCNuFAST64
-
- SCNuMAX
- SCNuPTR
-
- SCNx8
- SCNx16
- SCNx32
- SCNx64
-
- SCNxLEAST8
- SCNxLEAST16
- SCNxLEAST32
- SCNxLEAST64
-
- SCNxFAST8
- SCNxFAST16
- SCNxFAST32
- SCNxFAST64
-
- SCNxMAX
- SCNxPTR
-
-Types:
-
- imaxdiv_t
-
-intmax_t imaxabs(intmax_t j);
-imaxdiv_t imaxdiv(intmax_t numer, intmax_t denom);
-intmax_t strtoimax(const char* restrict nptr, char** restrict endptr, int base);
-uintmax_t strtoumax(const char* restrict nptr, char** restrict endptr, int base);
-intmax_t wcstoimax(const wchar_t* restrict nptr, wchar_t** restrict endptr, int base);
-uintmax_t wcstoumax(const wchar_t* restrict nptr, wchar_t** restrict endptr, int base);
-
-*/
-
-#if defined(__cplusplus) && __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
-# include <__cxx03/__config>
-#else
-# include <__config>
-#endif
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-# pragma GCC system_header
-#endif
-
-/* C99 stdlib (e.g. glibc < 2.18) does not provide format macros needed
- for C++11 unless __STDC_FORMAT_MACROS is defined
-*/
-#if defined(__cplusplus) && !defined(__STDC_FORMAT_MACROS)
-# define __STDC_FORMAT_MACROS
-#endif
-
-#if __has_include_next(<inttypes.h>)
-# include_next <inttypes.h>
-#endif
-
-#ifdef __cplusplus
-
-# include <stdint.h>
-
-# undef imaxabs
-# undef imaxdiv
-
-#endif // __cplusplus
-
-#endif // _LIBCPP_INTTYPES_H
diff --git a/libcxx/include/module.modulemap.in b/libcxx/include/module.modulemap.in
index 234c230ee38d0..8ba6683b95f44 100644
--- a/libcxx/include/module.modulemap.in
+++ b/libcxx/include/module.modulemap.in
@@ -2450,10 +2450,6 @@ module std_fenv_h [system] {
header "fenv.h"
export *
}
-module std_inttypes_h [system] {
- header "inttypes.h"
- export *
-}
module std_math_h [system] {
header "math.h"
export *
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