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diff lib/fflush.c @ 12255:83ddd76ac091

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fflush, freadseek: use fseeko, not fseek Follow our own advice: fseek is not safe to use on large files. * lib/fflush.c (clear_ungetc_buffer_preserving_position) (clear_ungetc_buffer): Avoid potential problems on large files. * lib/freadseek.c (freadseek): Likewise. * modules/freadseek (Depends-on): Add fseeko. * modules/fseek (configure.ac): Set a witness. * tests/test-fflush.c (main): Use fseeko. * tests/test-fpurge.c (fseek): Disable link warning. * tests/test-freadable.c (fseek): Likewise. * tests/test-freading.c (fseek): Likewise. * tests/test-fseeko.c (fseek): Likewise. * tests/test-ftell.c (fseek): Likewise. * tests/test-ftello.c (fseek): Likewise. * tests/test-fwritable.c (fseek): Likewise. * tests/test-fwriting.c (fseek): Likewise. Signed-off-by: Eric Blake <ebb9@byu.net>
author Eric Blake <ebb9@byu.net>
date Sat, 07 Nov 2009 16:03:38 -0700 (2009-11-07)
parents ecb384fccb5b
children cc0faab513a7
line wrap: on
line diff
--- a/lib/fflush.c
+++ b/lib/fflush.c
@@ -39,7 +39,7 @@
 {
   if (fp->_flags & _IO_IN_BACKUP)
     /* _IO_free_backup_area is a bit complicated.  Simply call fseek.  */
-    fseek (fp, 0, SEEK_CUR);
+    fseeko (fp, 0, SEEK_CUR);
 }
 
 #else
@@ -63,7 +63,7 @@
 # elif defined _IOERR               /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw */
   /* Nothing to do.  */
 # else                              /* other implementations */
-  fseek (fp, 0, SEEK_CUR);
+  fseeko (fp, 0, SEEK_CUR);
 # endif
 }