diff options
Diffstat (limited to 'string/string.h')
| -rw-r--r-- | string/string.h | 200 |
1 files changed, 20 insertions, 180 deletions
diff --git a/string/string.h b/string/string.h index 1f3e348834..150cfd8b13 100644 --- a/string/string.h +++ b/string/string.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1991-2016 Free Software Foundation, Inc. +/* Copyright (C) 1991-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -22,7 +22,8 @@ #ifndef _STRING_H #define _STRING_H 1 -#include <features.h> +#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION +#include <bits/libc-header-start.h> __BEGIN_DECLS @@ -37,7 +38,6 @@ __BEGIN_DECLS #endif -__BEGIN_NAMESPACE_STD /* Copy N bytes of SRC to DEST. */ extern void *memcpy (void *__restrict __dest, const void *__restrict __src, size_t __n) __THROW __nonnull ((1, 2)); @@ -45,7 +45,6 @@ extern void *memcpy (void *__restrict __dest, const void *__restrict __src, correct behavior for overlapping strings. */ extern void *memmove (void *__dest, const void *__src, size_t __n) __THROW __nonnull ((1, 2)); -__END_NAMESPACE_STD /* Copy no more than N bytes of SRC to DEST, stopping when C is found. Return the position in DEST one byte past where C was copied, @@ -57,7 +56,6 @@ extern void *memccpy (void *__restrict __dest, const void *__restrict __src, #endif /* Misc || X/Open. */ -__BEGIN_NAMESPACE_STD /* Set N bytes of S to C. */ extern void *memset (void *__s, int __c, size_t __n) __THROW __nonnull ((1)); @@ -92,7 +90,6 @@ memchr (const void *__s, int __c, size_t __n) __THROW extern void *memchr (const void *__s, int __c, size_t __n) __THROW __attribute_pure__ __nonnull ((1)); #endif -__END_NAMESPACE_STD #ifdef __USE_GNU /* Search in S for C. This is similar to `memchr' but there is no @@ -120,7 +117,6 @@ extern void *memrchr (const void *__s, int __c, size_t __n) #endif -__BEGIN_NAMESPACE_STD /* Copy SRC to DEST. */ extern char *strcpy (char *__restrict __dest, const char *__restrict __src) __THROW __nonnull ((1, 2)); @@ -150,23 +146,22 @@ extern int strcoll (const char *__s1, const char *__s2) extern size_t strxfrm (char *__restrict __dest, const char *__restrict __src, size_t __n) __THROW __nonnull ((2)); -__END_NAMESPACE_STD #ifdef __USE_XOPEN2K8 -/* The following functions are equivalent to the both above but they - take the locale they use for the collation as an extra argument. - This is not standardsized but something like will come. */ -# include <xlocale.h> +/* POSIX.1-2008 extended locale interface (see locale.h). */ +# include <bits/types/locale_t.h> -/* Compare the collated forms of S1 and S2 using rules from L. */ -extern int strcoll_l (const char *__s1, const char *__s2, __locale_t __l) +/* Compare the collated forms of S1 and S2, using sorting rules from L. */ +extern int strcoll_l (const char *__s1, const char *__s2, locale_t __l) __THROW __attribute_pure__ __nonnull ((1, 2, 3)); -/* Put a transformation of SRC into no more than N bytes of DEST. */ +/* Put a transformation of SRC into no more than N bytes of DEST, + using sorting rules from L. */ extern size_t strxfrm_l (char *__dest, const char *__src, size_t __n, - __locale_t __l) __THROW __nonnull ((2, 4)); + locale_t __l) __THROW __nonnull ((2, 4)); #endif -#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8 +#if (defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8 \ + || __GLIBC_USE (LIB_EXT2)) /* Duplicate S, returning an identical malloc'd string. */ extern char *strdup (const char *__s) __THROW __attribute_malloc__ __nonnull ((1)); @@ -175,7 +170,7 @@ extern char *strdup (const char *__s) /* Return a malloc'd copy of at most N bytes of STRING. The resultant string is terminated even if no null terminator appears before STRING[N]. */ -#if defined __USE_XOPEN2K8 +#if defined __USE_XOPEN2K8 || __GLIBC_USE (LIB_EXT2) extern char *strndup (const char *__string, size_t __n) __THROW __attribute_malloc__ __nonnull ((1)); #endif @@ -203,7 +198,6 @@ extern char *strndup (const char *__string, size_t __n) })) #endif -__BEGIN_NAMESPACE_STD /* Find the first occurrence of C in S. */ #ifdef __CORRECT_ISO_CPP_STRING_H_PROTO extern "C++" @@ -258,7 +252,6 @@ strrchr (const char *__s, int __c) __THROW extern char *strrchr (const char *__s, int __c) __THROW __attribute_pure__ __nonnull ((1)); #endif -__END_NAMESPACE_STD #ifdef __USE_GNU /* This function is similar to `strchr'. But it returns a pointer to @@ -274,7 +267,6 @@ extern char *strchrnul (const char *__s, int __c) # endif #endif -__BEGIN_NAMESPACE_STD /* Return the length of the initial segment of S which consists entirely of characters not in REJECT. */ extern size_t strcspn (const char *__s, const char *__reject) @@ -342,7 +334,6 @@ extern char *strstr (const char *__haystack, const char *__needle) /* Divide S into tokens separated by characters in DELIM. */ extern char *strtok (char *__restrict __s, const char *__restrict __delim) __THROW __nonnull ((2)); -__END_NAMESPACE_STD /* Divide S into tokens separated by characters in DELIM. Information passed between calls are stored in SAVE_PTR. */ @@ -389,11 +380,9 @@ extern void *mempcpy (void *__restrict __dest, #endif -__BEGIN_NAMESPACE_STD /* Return the length of S. */ extern size_t strlen (const char *__s) __THROW __attribute_pure__ __nonnull ((1)); -__END_NAMESPACE_STD #ifdef __USE_XOPEN2K8 /* Find the length of STRING, but scan at most MAXLEN characters. @@ -403,10 +392,8 @@ extern size_t strnlen (const char *__string, size_t __maxlen) #endif -__BEGIN_NAMESPACE_STD /* Return a string describing the meaning of the `errno' code in ERRNUM. */ extern char *strerror (int __errnum) __THROW; -__END_NAMESPACE_STD #ifdef __USE_XOPEN2K /* Reentrant version of `strerror'. There are 2 flavors of `strerror_r', GNU which returns the string @@ -437,116 +424,16 @@ extern char *strerror_r (int __errnum, char *__buf, size_t __buflen) #ifdef __USE_XOPEN2K8 /* Translate error number to string according to the locale L. */ -extern char *strerror_l (int __errnum, __locale_t __l) __THROW; +extern char *strerror_l (int __errnum, locale_t __l) __THROW; #endif - -/* We define this function always since `bzero' is sometimes needed when - the namespace rules does not allow this. */ -extern void __bzero (void *__s, size_t __n) __THROW __nonnull ((1)); - #ifdef __USE_MISC -/* Copy N bytes of SRC to DEST (like memmove, but args reversed). */ -extern void bcopy (const void *__src, void *__dest, size_t __n) - __THROW __nonnull ((1, 2)); - -/* Set N bytes of S to 0. */ -extern void bzero (void *__s, size_t __n) __THROW __nonnull ((1)); - -/* Compare N bytes of S1 and S2 (same as memcmp). */ -extern int bcmp (const void *__s1, const void *__s2, size_t __n) - __THROW __attribute_pure__ __nonnull ((1, 2)); - -/* Find the first occurrence of C in S (same as strchr). */ -# ifdef __CORRECT_ISO_CPP_STRING_H_PROTO -extern "C++" -{ -extern char *index (char *__s, int __c) - __THROW __asm ("index") __attribute_pure__ __nonnull ((1)); -extern const char *index (const char *__s, int __c) - __THROW __asm ("index") __attribute_pure__ __nonnull ((1)); +# include <strings.h> -# if defined __OPTIMIZE__ && !defined __CORRECT_ISO_CPP_STRINGS_H_PROTO -__extern_always_inline char * -index (char *__s, int __c) __THROW -{ - return __builtin_index (__s, __c); -} +/* Set N bytes of S to 0. The compiler will not delete a call to this + function, even if S is dead after the call. */ +extern void explicit_bzero (void *__s, size_t __n) __THROW __nonnull ((1)); -__extern_always_inline const char * -index (const char *__s, int __c) __THROW -{ - return __builtin_index (__s, __c); -} -# endif -} -# else -extern char *index (const char *__s, int __c) - __THROW __attribute_pure__ __nonnull ((1)); -# endif - -/* Find the last occurrence of C in S (same as strrchr). */ -# ifdef __CORRECT_ISO_CPP_STRING_H_PROTO -extern "C++" -{ -extern char *rindex (char *__s, int __c) - __THROW __asm ("rindex") __attribute_pure__ __nonnull ((1)); -extern const char *rindex (const char *__s, int __c) - __THROW __asm ("rindex") __attribute_pure__ __nonnull ((1)); - -# if defined __OPTIMIZE__ && !defined __CORRECT_ISO_CPP_STRINGS_H_PROTO -__extern_always_inline char * -rindex (char *__s, int __c) __THROW -{ - return __builtin_rindex (__s, __c); -} - -__extern_always_inline const char * -rindex (const char *__s, int __c) __THROW -{ - return __builtin_rindex (__s, __c); -} -#endif -} -# else -extern char *rindex (const char *__s, int __c) - __THROW __attribute_pure__ __nonnull ((1)); -# endif - -/* Return the position of the first bit set in I, or 0 if none are set. - The least-significant bit is position 1, the most-significant 32. */ -extern int ffs (int __i) __THROW __attribute__ ((__const__)); - -/* The following two functions are non-standard but necessary for non-32 bit - platforms. */ -# ifdef __USE_GNU -extern int ffsl (long int __l) __THROW __attribute__ ((__const__)); -__extension__ extern int ffsll (long long int __ll) - __THROW __attribute__ ((__const__)); -# endif - -/* Compare S1 and S2, ignoring case. */ -extern int strcasecmp (const char *__s1, const char *__s2) - __THROW __attribute_pure__ __nonnull ((1, 2)); - -/* Compare no more than N chars of S1 and S2, ignoring case. */ -extern int strncasecmp (const char *__s1, const char *__s2, size_t __n) - __THROW __attribute_pure__ __nonnull ((1, 2)); -#endif /* Use misc. */ - -#ifdef __USE_GNU -/* Again versions of a few functions which use the given locale instead - of the global one. */ -extern int strcasecmp_l (const char *__s1, const char *__s2, - __locale_t __loc) - __THROW __attribute_pure__ __nonnull ((1, 2, 3)); - -extern int strncasecmp_l (const char *__s1, const char *__s2, - size_t __n, __locale_t __loc) - __THROW __attribute_pure__ __nonnull ((1, 2, 4)); -#endif - -#ifdef __USE_MISC /* Return the next DELIM-delimited token from *STRINGP, terminating it with a '\0', and update *STRINGP to point past it. */ extern char *strsep (char **__restrict __stringp, @@ -601,57 +488,10 @@ extern char *basename (const char *__filename) __THROW __nonnull ((1)); # endif #endif - -#if defined __GNUC__ && __GNUC__ >= 2 -# if defined __OPTIMIZE__ && !defined __OPTIMIZE_SIZE__ \ - && !defined __NO_INLINE__ && !defined __cplusplus -/* When using GNU CC we provide some optimized versions of selected - functions from this header. There are two kinds of optimizations: - - - machine-dependent optimizations, most probably using inline - assembler code; these might be quite expensive since the code - size can increase significantly. - These optimizations are not used unless the symbol - __USE_STRING_INLINES - is defined before including this header. - - - machine-independent optimizations which do not increase the - code size significantly and which optimize mainly situations - where one or more arguments are compile-time constants. - These optimizations are used always when the compiler is - taught to optimize. - - One can inhibit all optimizations by defining __NO_STRING_INLINES. */ - -/* Get the machine-dependent optimizations (if any). */ -# include <bits/string.h> - -/* These are generic optimizations which do not add too much inline code. */ -# include <bits/string2.h> -# endif - +#if __GNUC_PREREQ (3,4) # if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function /* Functions with security checks. */ -# include <bits/string3.h> -# endif -#endif - -#if defined __USE_GNU && defined __OPTIMIZE__ \ - && defined __extern_always_inline && __GNUC_PREREQ (3,2) -# if !defined _FORCE_INLINES && !defined _HAVE_STRING_ARCH_mempcpy - -#undef mempcpy -#undef __mempcpy -#define mempcpy(dest, src, n) __mempcpy_inline (dest, src, n) -#define __mempcpy(dest, src, n) __mempcpy_inline (dest, src, n) - -__extern_always_inline void * -__mempcpy_inline (void *__restrict __dest, - const void *__restrict __src, size_t __n) -{ - return (char *) memcpy (__dest, __src, __n) + __n; -} - +# include <bits/string_fortified.h> # endif #endif |