X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/0f74f7850de124626d556442d22d143d85457816..17982e08d71bcb5b1d02d068ae1e6cc1903d6015:/lib/stdio.in.h diff --git a/lib/stdio.in.h b/lib/stdio.in.h index 473c84ce3e..9b313656c5 100644 --- a/lib/stdio.in.h +++ b/lib/stdio.in.h @@ -1,6 +1,6 @@ /* A GNU-like . - Copyright (C) 2004, 2007-2011 Free Software Foundation, Inc. + Copyright (C) 2004, 2007-2016 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -13,8 +13,7 @@ GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software Foundation, - Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + along with this program; if not, see . */ #if __GNUC__ >= 3 @PRAGMA_SYSTEM_HEADER@ @@ -53,7 +52,8 @@ #include /* Get off_t and ssize_t. Needed on many systems, including glibc 2.8 - and eglibc 2.11.2. */ + and eglibc 2.11.2. + May also define off_t to a 64-bit type on native Windows. */ #include /* The __attribute__ feature is available in gcc versions 2.5 and later. @@ -84,8 +84,13 @@ except that it indicates to GCC that the supported format string directives are the ones of the system printf(), rather than the ones standardized by ISO C99 and POSIX. */ -#define _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM(formatstring_parameter, first_argument) \ +#if GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU +# define _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM(formatstring_parameter, first_argument) \ + _GL_ATTRIBUTE_FORMAT_PRINTF (formatstring_parameter, first_argument) +#else +# define _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM(formatstring_parameter, first_argument) \ _GL_ATTRIBUTE_FORMAT ((__printf__, formatstring_parameter, first_argument)) +#endif /* _GL_ATTRIBUTE_FORMAT_SCANF indicates to GCC that the function takes a format string and arguments, @@ -124,6 +129,15 @@ #define _GL_STDIO_STRINGIZE(token) #token #define _GL_STDIO_MACROEXPAND_AND_STRINGIZE(token) _GL_STDIO_STRINGIZE(token) +/* When also using extern inline, suppress the use of static inline in + standard headers of problematic Apple configurations, as Libc at + least through Libc-825.26 (2013-04-09) mishandles it; see, e.g., + . + Perhaps Apple will fix this some day. */ +#if (defined _GL_EXTERN_INLINE_IN_USE && defined __APPLE__ \ + && defined __GNUC__ && defined __STDC__) +# undef putc_unlocked +#endif #if @GNULIB_DPRINTF@ # if @REPLACE_DPRINTF@ @@ -170,6 +184,26 @@ _GL_WARN_ON_USE (fclose, "fclose is not always POSIX compliant - " "use gnulib module fclose for portable POSIX compliance"); #endif +#if @GNULIB_FDOPEN@ +# if @REPLACE_FDOPEN@ +# if !(defined __cplusplus && defined GNULIB_NAMESPACE) +# undef fdopen +# define fdopen rpl_fdopen +# endif +_GL_FUNCDECL_RPL (fdopen, FILE *, (int fd, const char *mode) + _GL_ARG_NONNULL ((2))); +_GL_CXXALIAS_RPL (fdopen, FILE *, (int fd, const char *mode)); +# else +_GL_CXXALIAS_SYS (fdopen, FILE *, (int fd, const char *mode)); +# endif +_GL_CXXALIASWARN (fdopen); +#elif defined GNULIB_POSIXCHECK +# undef fdopen +/* Assume fdopen is always declared. */ +_GL_WARN_ON_USE (fdopen, "fdopen on native Windows platforms is not POSIX compliant - " + "use gnulib module fdopen for portability"); +#endif + #if @GNULIB_FFLUSH@ /* Flush all pending data on STREAM according to POSIX rules. Both output and seekable input streams are supported. @@ -239,7 +273,7 @@ _GL_CXXALIASWARN (fopen); #elif defined GNULIB_POSIXCHECK # undef fopen /* Assume fopen is always declared. */ -_GL_WARN_ON_USE (fopen, "fopen on Win32 platforms is not POSIX compatible - " +_GL_WARN_ON_USE (fopen, "fopen on native Windows platforms is not POSIX compliant - " "use gnulib module fopen for portability"); #endif @@ -367,7 +401,7 @@ _GL_CXXALIASWARN (freopen); # undef freopen /* Assume freopen is always declared. */ _GL_WARN_ON_USE (freopen, - "freopen on Win32 platforms is not POSIX compatible - " + "freopen on native Windows platforms is not POSIX compliant - " "use gnulib module freopen for portability"); #endif @@ -555,21 +589,27 @@ _GL_CXXALIAS_RPL (fwrite, size_t, _GL_CXXALIAS_SYS (fwrite, size_t, (const void *ptr, size_t s, size_t n, FILE *stream)); -/* Work around glibc bug 11959 +/* Work around bug 11959 when fortifying glibc 2.4 through 2.15 , which sometimes causes an unwanted diagnostic for fwrite calls. - This affects only function declaration attributes, so it's not - needed for C++. */ -# if !defined __cplusplus && 0 < __USE_FORTIFY_LEVEL -static inline size_t _GL_ARG_NONNULL ((1, 4)) -rpl_fwrite (const void *ptr, size_t s, size_t n, FILE *stream) -{ - size_t r = fwrite (ptr, s, n, stream); - (void) r; - return r; -} + This affects only function declaration attributes under certain + versions of gcc and clang, and is not needed for C++. */ +# if (0 < __USE_FORTIFY_LEVEL \ + && __GLIBC__ == 2 && 4 <= __GLIBC_MINOR__ && __GLIBC_MINOR__ <= 15 \ + && 3 < __GNUC__ + (4 <= __GNUC_MINOR__) \ + && !defined __cplusplus) # undef fwrite +# undef fwrite_unlocked +extern size_t __REDIRECT (rpl_fwrite, + (const void *__restrict, size_t, size_t, + FILE *__restrict), + fwrite); +extern size_t __REDIRECT (rpl_fwrite_unlocked, + (const void *__restrict, size_t, size_t, + FILE *__restrict), + fwrite_unlocked); # define fwrite rpl_fwrite +# define fwrite_unlocked rpl_fwrite_unlocked # endif # endif _GL_CXXALIASWARN (fwrite); @@ -679,26 +719,14 @@ _GL_WARN_ON_USE (getline, "getline is unportable - " # endif #endif -#if @GNULIB_GETS@ -# if @REPLACE_STDIO_READ_FUNCS@ && @GNULIB_STDIO_H_NONBLOCKING@ -# if !(defined __cplusplus && defined GNULIB_NAMESPACE) -# undef gets -# define gets rpl_gets -# endif -_GL_FUNCDECL_RPL (gets, char *, (char *s) _GL_ARG_NONNULL ((1))); -_GL_CXXALIAS_RPL (gets, char *, (char *s)); -# else -_GL_CXXALIAS_SYS (gets, char *, (char *s)); -# undef gets -# endif -_GL_CXXALIASWARN (gets); /* It is very rare that the developer ever has full control of stdin, - so any use of gets warrants an unconditional warning. Assume it is - always declared, since it is required by C89. */ + so any use of gets warrants an unconditional warning; besides, C11 + removed it. */ +#undef gets +#if HAVE_RAW_DECL_GETS && !defined __cplusplus _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead"); #endif - #if @GNULIB_OBSTACK_PRINTF@ || @GNULIB_OBSTACK_PRINTF_POSIX@ struct obstack; /* Grow an obstack with formatted output. Return the number of @@ -750,6 +778,20 @@ _GL_CXXALIAS_SYS (obstack_vprintf, int, _GL_CXXALIASWARN (obstack_vprintf); #endif +#if @GNULIB_PCLOSE@ +# if !@HAVE_PCLOSE@ +_GL_FUNCDECL_SYS (pclose, int, (FILE *stream) _GL_ARG_NONNULL ((1))); +# endif +_GL_CXXALIAS_SYS (pclose, int, (FILE *stream)); +_GL_CXXALIASWARN (pclose); +#elif defined GNULIB_POSIXCHECK +# undef pclose +# if HAVE_RAW_DECL_PCLOSE +_GL_WARN_ON_USE (pclose, "pclose is unportable - " + "use gnulib module pclose for more portability"); +# endif +#endif + #if @GNULIB_PERROR@ /* Print a message to standard error, describing the value of ERRNO, (if STRING is not NULL and not empty) prefixed with STRING and ": ", @@ -781,6 +823,10 @@ _GL_FUNCDECL_RPL (popen, FILE *, (const char *cmd, const char *mode) _GL_ARG_NONNULL ((1, 2))); _GL_CXXALIAS_RPL (popen, FILE *, (const char *cmd, const char *mode)); # else +# if !@HAVE_POPEN@ +_GL_FUNCDECL_SYS (popen, FILE *, (const char *cmd, const char *mode) + _GL_ARG_NONNULL ((1, 2))); +# endif _GL_CXXALIAS_SYS (popen, FILE *, (const char *cmd, const char *mode)); # endif _GL_CXXALIASWARN (popen); @@ -1016,9 +1062,9 @@ _GL_WARN_ON_USE (snprintf, "snprintf is unportable - " # endif #endif -/* Some people would argue that sprintf should be handled like gets - (for example, OpenBSD issues a link warning for both functions), - since both can cause security holes due to buffer overruns. +/* Some people would argue that all sprintf uses should be warned about + (for example, OpenBSD issues a link warning for it), + since it can cause security holes due to buffer overruns. However, we believe that sprintf can be used safely, and is more efficient than snprintf in those safe cases; and as proof of our belief, we use sprintf in several gnulib modules. So this header @@ -1306,7 +1352,6 @@ _GL_WARN_ON_USE (vsprintf, "vsprintf is not always POSIX compliant - " "POSIX compliance"); #endif - #endif /* _@GUARD_PREFIX@_STDIO_H */ #endif /* _@GUARD_PREFIX@_STDIO_H */ #endif