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authorZack Weinberg <zackw@panix.com>2018-02-07 19:21:54 -0500
committerZack Weinberg <zackw@panix.com>2018-02-21 14:13:21 -0500
commit177aad3ff637b32550aec8080314d76a189f7a03 (patch)
tree723dccbc1ca410f26efa1f49c741f0c188057a49
parent9964a14579e5eef925aaa82facc4980f627802fe (diff)
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Remove legacy configuration knobs from libio.
This patch eliminates the "compatibility defines" _IO_UNIFIED_JUMPTABLES (always defined to 1, used in a number of #ifs which are therefore always false), _STDIO_USES_IOSTREAM (unused), __HAVE_COLUMN (unused), _IO_BE (replaced with __glibc_unlikely), and yet another redundant definition of EOF. Installed stripped libraries are unchanged by this patch. * libio/libio.h (_IO_UNIFIED_JUMPTABLES, _STDIO_USES_IOSTREAM) (__HAVE_COLUMN, _IO_BE): Don't define. (_IO_peekc_unlocked, _IO_getwc_unlocked, _IO_putwc_unlocked) (_IO_fwide_maybe_incompatible): Use __glibc_unlikely. * libio/libioP.h (EOF): Don't define. * libio/iofdopen.c, libio/iofopen.c, libio/iopopen.c * libio/iovdprintf.c, libio/oldiofdopen.c, libio/oldiofopen.c * libio/oldiopopen.c, debug/vdprintf_chk.c: Remove #if block testing _IO_UNIFIED_JUMPTABLES.
-rw-r--r--ChangeLog10
-rw-r--r--debug/vdprintf_chk.c3
-rw-r--r--libio/iofdopen.c3
-rw-r--r--libio/iofopen.c3
-rw-r--r--libio/iopopen.c3
-rw-r--r--libio/iovdprintf.c3
-rw-r--r--libio/libio.h36
-rw-r--r--libio/libioP.h4
-rw-r--r--libio/oldiofdopen.c3
-rw-r--r--libio/oldiofopen.c3
-rw-r--r--libio/oldiopopen.c3
11 files changed, 24 insertions, 50 deletions
diff --git a/ChangeLog b/ChangeLog
index 916a6fd..f35b6e4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,15 @@
2018-02-21 Zack Weinberg <zackw@panix.com>
+ * libio/libio.h (_IO_UNIFIED_JUMPTABLES, _STDIO_USES_IOSTREAM)
+ (__HAVE_COLUMN, _IO_BE): Don't define.
+ (_IO_peekc_unlocked, _IO_getwc_unlocked, _IO_putwc_unlocked)
+ (_IO_fwide_maybe_incompatible): Use __glibc_unlikely.
+ * libio/libioP.h (EOF): Don't define.
+ * libio/iofdopen.c, libio/iofopen.c, libio/iopopen.c
+ * libio/iovdprintf.c, libio/oldiofdopen.c, libio/oldiofopen.c
+ * libio/oldiopopen.c, debug/vdprintf_chk.c: Remove #if block
+ testing _IO_UNIFIED_JUMPTABLES.
+
* libio/libio.h (_IO_FILE): Delete; all uses changed to FILE.
(_IO_fpos_t): Delete; all uses changed to __fpos_t.
(_IO_fpos64_t): Delete; all uses changed to __fpos64_t.
diff --git a/debug/vdprintf_chk.c b/debug/vdprintf_chk.c
index c195a79..bc713b4 100644
--- a/debug/vdprintf_chk.c
+++ b/debug/vdprintf_chk.c
@@ -40,9 +40,6 @@ __vdprintf_chk (int d, int flags, const char *format, va_list arg)
_IO_no_init (&tmpfil.file, _IO_USER_LOCK, 0, &wd, &_IO_wfile_jumps);
_IO_JUMPS (&tmpfil) = &_IO_file_jumps;
_IO_new_file_init_internal (&tmpfil);
-#if !_IO_UNIFIED_JUMPTABLES
- tmpfil.vtable = NULL;
-#endif
if (_IO_file_attach (&tmpfil.file, d) == NULL)
{
_IO_un_link (&tmpfil);
diff --git a/libio/iofdopen.c b/libio/iofdopen.c
index 3961736..21a53e3 100644
--- a/libio/iofdopen.c
+++ b/libio/iofdopen.c
@@ -137,9 +137,6 @@ _IO_new_fdopen (int fd, const char *mode)
#endif
&_IO_file_jumps;
_IO_new_file_init_internal (&new_f->fp);
-#if !_IO_UNIFIED_JUMPTABLES
- new_f->fp.vtable = NULL;
-#endif
/* We only need to record the fd because _IO_file_init_internal will
have unset the offset. It is important to unset the cached
offset because the real offset in the file could change between
diff --git a/libio/iofopen.c b/libio/iofopen.c
index f17ec91..ed3e8b8 100644
--- a/libio/iofopen.c
+++ b/libio/iofopen.c
@@ -72,9 +72,6 @@ __fopen_internal (const char *filename, const char *mode, int is32)
_IO_no_init (&new_f->fp.file, 0, 0, &new_f->wd, &_IO_wfile_jumps);
_IO_JUMPS (&new_f->fp) = &_IO_file_jumps;
_IO_new_file_init_internal (&new_f->fp);
-#if !_IO_UNIFIED_JUMPTABLES
- new_f->fp.vtable = NULL;
-#endif
if (_IO_file_fopen ((FILE *) new_f, filename, mode, is32) != NULL)
return __fopen_maybe_mmap (&new_f->fp.file);
diff --git a/libio/iopopen.c b/libio/iopopen.c
index efdd0a6..2eff45b 100644
--- a/libio/iopopen.c
+++ b/libio/iopopen.c
@@ -200,9 +200,6 @@ _IO_new_popen (const char *command, const char *mode)
_IO_init_internal (fp, 0);
_IO_JUMPS (&new_f->fpx.file) = &_IO_proc_jumps;
_IO_new_file_init_internal (&new_f->fpx.file);
-#if !_IO_UNIFIED_JUMPTABLES
- new_f->fpx.file.vtable = NULL;
-#endif
if (_IO_new_proc_open (fp, command, mode) != NULL)
return (FILE *) &new_f->fpx.file;
_IO_un_link (&new_f->fpx.file);
diff --git a/libio/iovdprintf.c b/libio/iovdprintf.c
index 78df2fe..78a3a2b 100644
--- a/libio/iovdprintf.c
+++ b/libio/iovdprintf.c
@@ -40,9 +40,6 @@ _IO_vdprintf (int d, const char *format, va_list arg)
_IO_no_init (&tmpfil.file, _IO_USER_LOCK, 0, &wd, &_IO_wfile_jumps);
_IO_JUMPS (&tmpfil) = &_IO_file_jumps;
_IO_new_file_init_internal (&tmpfil);
-#if !_IO_UNIFIED_JUMPTABLES
- tmpfil.vtable = NULL;
-#endif
if (_IO_file_attach (&tmpfil.file, d) == NULL)
{
_IO_un_link (&tmpfil);
diff --git a/libio/libio.h b/libio/libio.h
index 890b825..a3c679c 100644
--- a/libio/libio.h
+++ b/libio/libio.h
@@ -61,9 +61,6 @@ typedef union
#include <shlib-compat.h>
/* compatibility defines */
-#define _STDIO_USES_IOSTREAM
-#define _IO_UNIFIED_JUMPTABLES 1
-#define __HAVE_COLUMN
#define _IO_file_flags _flags
/* open modes */
@@ -228,28 +225,23 @@ extern wint_t __wunderflow (FILE *);
extern wint_t __wuflow (FILE *);
extern wint_t __woverflow (FILE *, wint_t);
-#if __GNUC__ >= 3
-# define _IO_BE(expr, res) __builtin_expect ((expr), res)
-#else
-# define _IO_BE(expr, res) (expr)
-#endif
-
#define _IO_getc_unlocked(_fp) __getc_unlocked_body (_fp)
-#define _IO_peekc_unlocked(_fp) \
- (_IO_BE ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end, 0) \
- && __underflow (_fp) == EOF ? EOF \
- : *(unsigned char *) (_fp)->_IO_read_ptr)
+#define _IO_peekc_unlocked(_fp) \
+ (__glibc_unlikely ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end) \
+ && __underflow (_fp) == EOF \
+ ? EOF \
+ : *(unsigned char *) (_fp)->_IO_read_ptr)
#define _IO_putc_unlocked(_ch, _fp) __putc_unlocked_body (_ch, _fp)
-# define _IO_getwc_unlocked(_fp) \
- (_IO_BE ((_fp)->_wide_data == NULL \
- || ((_fp)->_wide_data->_IO_read_ptr \
- >= (_fp)->_wide_data->_IO_read_end), 0) \
+# define _IO_getwc_unlocked(_fp) \
+ (__glibc_unlikely ((_fp)->_wide_data == NULL \
+ || ((_fp)->_wide_data->_IO_read_ptr \
+ >= (_fp)->_wide_data->_IO_read_end)) \
? __wuflow (_fp) : (wint_t) *(_fp)->_wide_data->_IO_read_ptr++)
-# define _IO_putwc_unlocked(_wch, _fp) \
- (_IO_BE ((_fp)->_wide_data == NULL \
- || ((_fp)->_wide_data->_IO_write_ptr \
- >= (_fp)->_wide_data->_IO_write_end), 0) \
+# define _IO_putwc_unlocked(_wch, _fp) \
+ (__glibc_unlikely ((_fp)->_wide_data == NULL \
+ || ((_fp)->_wide_data->_IO_write_ptr \
+ >= (_fp)->_wide_data->_IO_write_end)) \
? __woverflow (_fp, _wch) \
: (wint_t) (*(_fp)->_wide_data->_IO_write_ptr++ = (_wch)))
@@ -304,7 +296,7 @@ extern int _IO_fwide (FILE *__fp, int __mode) __THROW;
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
# define _IO_fwide_maybe_incompatible \
- (__builtin_expect (&_IO_stdin_used == NULL, 0))
+ (__glibc_unlikely (&_IO_stdin_used == NULL))
extern const int _IO_stdin_used;
weak_extern (_IO_stdin_used);
#else
diff --git a/libio/libioP.h b/libio/libioP.h
index 57fd605..5064bdf 100644
--- a/libio/libioP.h
+++ b/libio/libioP.h
@@ -690,10 +690,6 @@ extern off64_t _IO_seekoff_unlocked (FILE *, off64_t, int, int)
extern off64_t _IO_seekpos_unlocked (FILE *, off64_t, int)
attribute_hidden;
-#ifndef EOF
-# define EOF (-1)
-#endif
-
#if _G_HAVE_MMAP
# include <unistd.h>
diff --git a/libio/oldiofdopen.c b/libio/oldiofdopen.c
index be670e8..17930c2 100644
--- a/libio/oldiofdopen.c
+++ b/libio/oldiofdopen.c
@@ -102,9 +102,6 @@ _IO_old_fdopen (int fd, const char *mode)
_IO_old_init (&new_f->fp.file._file, 0);
_IO_JUMPS_FILE_plus (&new_f->fp) = &_IO_old_file_jumps;
_IO_old_file_init_internal ((struct _IO_FILE_plus *) &new_f->fp);
-#if !_IO_UNIFIED_JUMPTABLES
- new_f->fp.vtable = NULL;
-#endif
if (_IO_old_file_attach (&new_f->fp.file._file, fd) == NULL)
{
_IO_un_link ((struct _IO_FILE_plus *) &new_f->fp);
diff --git a/libio/oldiofopen.c b/libio/oldiofopen.c
index f4ead0c..f0a6710 100644
--- a/libio/oldiofopen.c
+++ b/libio/oldiofopen.c
@@ -52,9 +52,6 @@ _IO_old_fopen (const char *filename, const char *mode)
_IO_old_init (&new_f->fp.file._file, 0);
_IO_JUMPS_FILE_plus (&new_f->fp) = &_IO_old_file_jumps;
_IO_old_file_init_internal ((struct _IO_FILE_plus *) &new_f->fp);
-#if !_IO_UNIFIED_JUMPTABLES
- new_f->fp.vtable = NULL;
-#endif
if (_IO_old_file_fopen ((FILE *) &new_f->fp, filename, mode) != NULL)
return (FILE *) &new_f->fp;
_IO_un_link ((struct _IO_FILE_plus *) &new_f->fp);
diff --git a/libio/oldiopopen.c b/libio/oldiopopen.c
index 42cab4e..e47965d 100644
--- a/libio/oldiopopen.c
+++ b/libio/oldiopopen.c
@@ -157,9 +157,6 @@ _IO_old_popen (const char *command, const char *mode)
_IO_old_init (fp, 0);
_IO_JUMPS_FILE_plus (&new_f->fpx.file) = &_IO_old_proc_jumps;
_IO_old_file_init_internal ((struct _IO_FILE_plus *) &new_f->fpx.file);
-#if !_IO_UNIFIED_JUMPTABLES
- new_f->fpx.file.vtable = NULL;
-#endif
if (_IO_old_proc_open (fp, command, mode) != NULL)
return fp;
_IO_un_link ((struct _IO_FILE_plus *) &new_f->fpx.file);