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* configure.in: Remove test for support for subtracting local labels.

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* stdio-common/vfprintf.c: Remove test of
	HAVE_SUBTRACT_LOCAL_LABELS.
This commit is contained in:
Ulrich Drepper 2005-11-05 21:49:48 +00:00
parent ce33ee7caa
commit 4520d7aac8
4 changed files with 8 additions and 73 deletions
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4
ChangeLog
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@ -1,5 +1,9 @@
2005-11-05 Ulrich Drepper <drepper@redhat.com>
* configure.in: Remove test for support for subtracting local labels.
* stdio-common/vfprintf.c: Remove test of
HAVE_SUBTRACT_LOCAL_LABELS.
* configure.in: If init_array/fini_array support is not available,
bail out.
* config.h.in: Remove trace of optional init_array/fini_array support.

40
configure vendored
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@ -6462,46 +6462,6 @@ _ACEOF
fi
echo "$as_me:$LINENO: checking for local label subtraction" >&5
echo $ECHO_N "checking for local label subtraction... $ECHO_C" >&6
if test "${libc_cv_gcc_subtract_local_labels+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
cat > conftest.c <<EOF
#line $LINENO "configure"
int foo (int a)
{
static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 };
void *p = &&l1 + ar[a];
goto *p;
l1:
return 1;
l2:
return 2;
}
EOF
if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostdlib -nostartfiles
-o conftest conftest.c -lgcc >&5'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
libc_cv_gcc_subtract_local_labels=yes
else
libc_cv_gcc_subtract_local_labels=no
fi
rm -f conftest*
fi
echo "$as_me:$LINENO: result: $libc_cv_gcc_subtract_local_labels" >&5
echo "${ECHO_T}$libc_cv_gcc_subtract_local_labels" >&6
if test "$libc_cv_gcc_subtract_local_labels" = yes; then
cat >>confdefs.h <<\_ACEOF
#define HAVE_SUBTRACT_LOCAL_LABELS 1
_ACEOF
fi
if test "x$use__thread" != xno; then
echo "$as_me:$LINENO: checking for __thread" >&5
echo $ECHO_N "checking for __thread... $ECHO_C" >&6

29
configure.in
View File

@ -1855,35 +1855,6 @@ if test "$libc_cv_gcc_builtin_redirection" = yes ; then
AC_DEFINE(HAVE_BUILTIN_REDIRECTION)
fi
dnl Check whether the compiler supports subtraction of local labels.
AC_CACHE_CHECK(for local label subtraction, libc_cv_gcc_subtract_local_labels,
[cat > conftest.c <<EOF
changequote(,)dnl
#line $LINENO "configure"
int foo (int a)
{
static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 };
void *p = &&l1 + ar[a];
goto *p;
l1:
return 1;
l2:
return 2;
}
changequote([,])dnl
EOF
dnl No \ in command here because it ends up inside ''.
if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostdlib -nostartfiles
-o conftest conftest.c -lgcc >&AS_MESSAGE_LOG_FD]); then
libc_cv_gcc_subtract_local_labels=yes
else
libc_cv_gcc_subtract_local_labels=no
fi
rm -f conftest*])
if test "$libc_cv_gcc_subtract_local_labels" = yes; then
AC_DEFINE(HAVE_SUBTRACT_LOCAL_LABELS)
fi
dnl Check whether the compiler supports the __thread keyword.
if test "x$use__thread" != xno; then
AC_CACHE_CHECK([for __thread], libc_cv_gcc___thread,

8
stdio-common/vfprintf.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1991-2002, 2003, 2004 Free Software Foundation, Inc.
/* Copyright (C) 1991-2002, 2003, 2004, 2005 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
@ -257,7 +257,7 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
#define NOT_IN_JUMP_RANGE(Ch) ((Ch) < L_(' ') || (Ch) > L_('z'))
#define CHAR_CLASS(Ch) (jump_table[(INT_T) (Ch) - L_(' ')])
#if defined HAVE_SUBTRACT_LOCAL_LABELS && defined SHARED
#ifdef SHARED
/* 'int' is enough and it saves some space on 64 bit systems. */
# define JUMP_TABLE_TYPE const int
# define JUMP(ChExpr, table) \
@ -1283,7 +1283,7 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
/* Process whole format string. */
do
{
#if defined HAVE_SUBTRACT_LOCAL_LABELS && defined SHARED
#ifdef SHARED
# define REF(Name) &&do_##Name - &&do_form_unknown
#else
# define REF(Name) &&do_##Name
@ -1726,7 +1726,7 @@ do_positional:
for (; (size_t) nspecs_done < nspecs; ++nspecs_done)
{
#undef REF
#if defined HAVE_SUBTRACT_LOCAL_LABELS && defined SHARED
#ifdef SHARED
# define REF(Name) &&do2_##Name - &&do_form_unknown
#else
# define REF(Name) &&do2_##Name