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1e17bc1faf
Back in r240527 I added a knob to prevent thread-unsafe functions from being exposed. mblen(), mbtowc() and wctomb() were also added to this list, as the latest issue of POSIX doesn't require these functions to be thread-safe. It turns out that the only circumstance in which these functions are not thread-safe is in case they are used in combination with state-dependent character sets (e.g., Shift-JIS). According to Austin Group Bug 708, these character sets "[...] are mostly a relic of the past and which were never supported on most POSIX systems". Though in many cases the use of these functions can be prevented by using the reentrant counterparts, they are the only functions that allow you to query whether the locale's character set is state-dependent. This means that omitting these functions removes actual functionality. Let's be a bit less pedantic and drop the guards around these functions. Links: http://austingroupbugs.net/view.php?id=708 http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2037.htm Reviewed by: ericwf Differential Revision: https://reviews.llvm.org/D21436 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@290748 91177308-0d34-0410-b5e6-96231b3b80d8
163 lines
4.6 KiB
C++
163 lines
4.6 KiB
C++
// -*- C++ -*-
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//===--------------------------- cstdlib ----------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_CSTDLIB
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#define _LIBCPP_CSTDLIB
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/*
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cstdlib synopsis
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Macros:
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EXIT_FAILURE
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EXIT_SUCCESS
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MB_CUR_MAX
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NULL
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RAND_MAX
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namespace std
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{
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Types:
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size_t
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div_t
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ldiv_t
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lldiv_t // C99
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double atof (const char* nptr);
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int atoi (const char* nptr);
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long atol (const char* nptr);
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long long atoll(const char* nptr); // C99
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double strtod (const char* restrict nptr, char** restrict endptr);
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float strtof (const char* restrict nptr, char** restrict endptr); // C99
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long double strtold (const char* restrict nptr, char** restrict endptr); // C99
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long strtol (const char* restrict nptr, char** restrict endptr, int base);
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long long strtoll (const char* restrict nptr, char** restrict endptr, int base); // C99
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unsigned long strtoul (const char* restrict nptr, char** restrict endptr, int base);
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unsigned long long strtoull(const char* restrict nptr, char** restrict endptr, int base); // C99
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int rand(void);
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void srand(unsigned int seed);
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void* calloc(size_t nmemb, size_t size);
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void free(void* ptr);
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void* malloc(size_t size);
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void* realloc(void* ptr, size_t size);
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void abort(void);
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int atexit(void (*func)(void));
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void exit(int status);
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void _Exit(int status);
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char* getenv(const char* name);
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int system(const char* string);
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void* bsearch(const void* key, const void* base, size_t nmemb, size_t size,
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int (*compar)(const void *, const void *));
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void qsort(void* base, size_t nmemb, size_t size,
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int (*compar)(const void *, const void *));
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int abs( int j);
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long abs( long j);
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long long abs(long long j); // C++0X
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long labs( long j);
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long long llabs(long long j); // C99
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div_t div( int numer, int denom);
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ldiv_t div( long numer, long denom);
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lldiv_t div(long long numer, long long denom); // C++0X
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ldiv_t ldiv( long numer, long denom);
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lldiv_t lldiv(long long numer, long long denom); // C99
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int mblen(const char* s, size_t n);
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int mbtowc(wchar_t* restrict pwc, const char* restrict s, size_t n);
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int wctomb(char* s, wchar_t wchar);
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size_t mbstowcs(wchar_t* restrict pwcs, const char* restrict s, size_t n);
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size_t wcstombs(char* restrict s, const wchar_t* restrict pwcs, size_t n);
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int at_quick_exit(void (*func)(void)) // C++11
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void quick_exit(int status); // C++11
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void *aligned_alloc(size_t alignment, size_t size); // C11
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} // std
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*/
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#include <__config>
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#include <stdlib.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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#pragma GCC system_header
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#endif
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#ifdef __GNUC__
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#define _LIBCPP_UNREACHABLE() __builtin_unreachable()
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#else
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#define _LIBCPP_UNREACHABLE() _VSTD::abort()
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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using ::size_t;
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using ::div_t;
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using ::ldiv_t;
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#ifndef _LIBCPP_HAS_NO_LONG_LONG
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using ::lldiv_t;
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#endif // _LIBCPP_HAS_NO_LONG_LONG
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using ::atof;
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using ::atoi;
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using ::atol;
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#ifndef _LIBCPP_HAS_NO_LONG_LONG
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using ::atoll;
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#endif // _LIBCPP_HAS_NO_LONG_LONG
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using ::strtod;
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using ::strtof;
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using ::strtold;
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using ::strtol;
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#ifndef _LIBCPP_HAS_NO_LONG_LONG
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using ::strtoll;
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#endif // _LIBCPP_HAS_NO_LONG_LONG
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using ::strtoul;
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#ifndef _LIBCPP_HAS_NO_LONG_LONG
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using ::strtoull;
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#endif // _LIBCPP_HAS_NO_LONG_LONG
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using ::rand;
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using ::srand;
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using ::calloc;
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using ::free;
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using ::malloc;
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using ::realloc;
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using ::abort;
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using ::atexit;
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using ::exit;
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using ::_Exit;
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using ::getenv;
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using ::system;
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using ::bsearch;
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using ::qsort;
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using ::abs;
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using ::labs;
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#ifndef _LIBCPP_HAS_NO_LONG_LONG
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using ::llabs;
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#endif // _LIBCPP_HAS_NO_LONG_LONG
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using ::div;
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using ::ldiv;
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#ifndef _LIBCPP_HAS_NO_LONG_LONG
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using ::lldiv;
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#endif // _LIBCPP_HAS_NO_LONG_LONG
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using ::mblen;
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using ::mbtowc;
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using ::wctomb;
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using ::mbstowcs;
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using ::wcstombs;
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#ifdef _LIBCPP_HAS_QUICK_EXIT
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using ::at_quick_exit;
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using ::quick_exit;
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#endif
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#ifdef _LIBCPP_HAS_C11_FEATURES
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using ::aligned_alloc;
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#endif
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_CSTDLIB
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