diff options
Diffstat (limited to 'lgl/stdio_.h')
| -rw-r--r-- | lgl/stdio_.h | 44 |
1 files changed, 37 insertions, 7 deletions
diff --git a/lgl/stdio_.h b/lgl/stdio_.h index 2c33e489a4..a3c6081e36 100644 --- a/lgl/stdio_.h +++ b/lgl/stdio_.h @@ -28,17 +28,18 @@ #else /* Normal invocation convention. */ +#ifndef _GL_STDIO_H + +/* The include_next requires a split double-inclusion guard. */ #if @HAVE_INCLUDE_NEXT@ # include_next <stdio.h> +#else +# include @ABSOLUTE_STDIO_H@ #endif #ifndef _GL_STDIO_H #define _GL_STDIO_H -#if ! @HAVE_INCLUDE_NEXT@ -# include @ABSOLUTE_STDIO_H@ -#endif - #include <stdarg.h> #include <stddef.h> @@ -232,7 +233,19 @@ extern int fseeko (FILE *fp, off_t offset, int whence); fseeko (f, o, w)) #endif -#if defined GNULIB_POSIXCHECK +#if @GNULIB_FSEEK@ && @REPLACE_FSEEK@ +extern int rpl_fseek (FILE *fp, long offset, int whence); +# undef fseek +# if defined GNULIB_POSIXCHECK +# define fseek(f,o,w) \ + (GL_LINK_WARNING ("fseek cannot handle files larger than 4 GB " \ + "on 32-bit platforms - " \ + "use fseeko function for handling of large files"), \ + rpl_fseek (f, o, w)) +# else +# define fseek rpl_fseek +# endif +#elif defined GNULIB_POSIXCHECK # ifndef fseek # define fseek(f,o,w) \ (GL_LINK_WARNING ("fseek cannot handle files larger than 4 GB " \ @@ -256,7 +269,19 @@ extern off_t ftello (FILE *fp); ftello (f)) #endif -#if defined GNULIB_POSIXCHECK +#if @GNULIB_FTELL@ && @REPLACE_FTELL@ +extern long rpl_ftell (FILE *fp); +# undef ftell +# if GNULIB_POSIXCHECK +# define ftell(f) \ + (GL_LINK_WARNING ("ftell cannot handle files larger than 4 GB " \ + "on 32-bit platforms - " \ + "use ftello function for handling of large files"), \ + rpl_ftell (f)) +# else +# define ftell rpl_ftell +# endif +#elif defined GNULIB_POSIXCHECK # ifndef ftell # define ftell(f) \ (GL_LINK_WARNING ("ftell cannot handle files larger than 4 GB " \ @@ -270,7 +295,11 @@ extern off_t ftello (FILE *fp); # if @REPLACE_FFLUSH@ # define fflush rpl_fflush /* Flush all pending data on STREAM according to POSIX rules. Both - output and seekable input streams are supported. */ + output and seekable input streams are supported. + Note! LOSS OF DATA can occur if fflush is applied on an input stream + that is _not_seekable_ or on an update stream that is _not_seekable_ + and in which the most recent operation was input. Seekability can + be tested with lseek(fileno(fp),0,SEEK_CUR). */ extern int fflush (FILE *gl_stream); # endif #elif defined GNULIB_POSIXCHECK @@ -287,4 +316,5 @@ extern off_t ftello (FILE *fp); #endif #endif /* _GL_STDIO_H */ +#endif /* _GL_STDIO_H */ #endif |