include alloca.h if available.

On LynxOS, alloca is defined in allocal.h.  This fixes one warning that
occurs when building GDBserver for LynxOS.

gdb/gdbserver/ChangeLog:

        * configure.ac: Add configure check for alloca.
        * configure, config.in: Regenerate.
        * server.h: Include alloca.h if it exists.
        * gdbreplay.c: Include alloca.h if it exists.
This commit is contained in:
gdbadmin 2010-09-01 01:51:07 +00:00
parent 86c80b5af0
commit a1723c35ac
6 changed files with 229 additions and 1 deletions

View file

@ -1,3 +1,10 @@
2010-09-01 Joel Brobecker <brobecker@adacore.com>
* configure.ac: Add configure check for alloca.
* configure, config.in: Regenerate.
* server.h: Include alloca.h if it exists.
* gdbreplay.c: Include alloca.h if it exists.
2010-08-31 Sami Wagiaalla <swagiaal@redhat.com>
* symfile.c (reread_symbols): Use psymbol_bcache_free, and

View file

@ -1,5 +1,20 @@
/* config.in. Generated from configure.ac by autoheader. */
/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
systems. This function is required for `alloca.c' support on those systems.
*/
#undef CRAY_STACKSEG_END
/* Define to 1 if using `alloca.c'. */
#undef C_ALLOCA
/* Define to 1 if you have `alloca', as a function or macro. */
#undef HAVE_ALLOCA
/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
*/
#undef HAVE_ALLOCA_H
/* Define to 1 if you have the <arpa/inet.h> header file. */
#undef HAVE_ARPA_INET_H
@ -184,6 +199,14 @@
/* Bug reporting address */
#undef REPORT_BUGS_TO
/* If using the C implementation of alloca, define if you know the
direction of stack growth for your system; otherwise it will be
automatically deduced at runtime.
STACK_DIRECTION > 0 => grows toward higher addresses
STACK_DIRECTION < 0 => grows toward lower addresses
STACK_DIRECTION = 0 => direction of growth unknown */
#undef STACK_DIRECTION
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS

View file

@ -606,6 +606,7 @@ WARN_CFLAGS
ustinc
ustlibs
LIBOBJS
ALLOCA
INSTALL_DATA
INSTALL_SCRIPT
INSTALL_PROGRAM
@ -3796,6 +3797,196 @@ $as_echo "#define STDC_HEADERS 1" >>confdefs.h
fi
# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
# for constant arguments. Useless!
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for working alloca.h" >&5
$as_echo_n "checking for working alloca.h... " >&6; }
if test "${ac_cv_working_alloca_h+set}" = set; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <alloca.h>
int
main ()
{
char *p = (char *) alloca (2 * sizeof (int));
if (p) return 0;
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
ac_cv_working_alloca_h=yes
else
ac_cv_working_alloca_h=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_working_alloca_h" >&5
$as_echo "$ac_cv_working_alloca_h" >&6; }
if test $ac_cv_working_alloca_h = yes; then
$as_echo "#define HAVE_ALLOCA_H 1" >>confdefs.h
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for alloca" >&5
$as_echo_n "checking for alloca... " >&6; }
if test "${ac_cv_func_alloca_works+set}" = set; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#ifdef __GNUC__
# define alloca __builtin_alloca
#else
# ifdef _MSC_VER
# include <malloc.h>
# define alloca _alloca
# else
# ifdef HAVE_ALLOCA_H
# include <alloca.h>
# else
# ifdef _AIX
#pragma alloca
# else
# ifndef alloca /* predefined by HP cc +Olibcalls */
char *alloca ();
# endif
# endif
# endif
# endif
#endif
int
main ()
{
char *p = (char *) alloca (1);
if (p) return 0;
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
ac_cv_func_alloca_works=yes
else
ac_cv_func_alloca_works=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_alloca_works" >&5
$as_echo "$ac_cv_func_alloca_works" >&6; }
if test $ac_cv_func_alloca_works = yes; then
$as_echo "#define HAVE_ALLOCA 1" >>confdefs.h
else
# The SVR3 libPW and SVR4 libucb both contain incompatible functions
# that cause trouble. Some versions do not even contain alloca or
# contain a buggy version. If you still want to use their alloca,
# use ar to extract alloca.o from them instead of compiling alloca.c.
ALLOCA=\${LIBOBJDIR}alloca.$ac_objext
$as_echo "#define C_ALLOCA 1" >>confdefs.h
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether \`alloca.c' needs Cray hooks" >&5
$as_echo_n "checking whether \`alloca.c' needs Cray hooks... " >&6; }
if test "${ac_cv_os_cray+set}" = set; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#if defined CRAY && ! defined CRAY2
webecray
#else
wenotbecray
#endif
_ACEOF
if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
$EGREP "webecray" >/dev/null 2>&1; then :
ac_cv_os_cray=yes
else
ac_cv_os_cray=no
fi
rm -f conftest*
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_os_cray" >&5
$as_echo "$ac_cv_os_cray" >&6; }
if test $ac_cv_os_cray = yes; then
for ac_func in _getb67 GETB67 getb67; do
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
eval as_val=\$$as_ac_var
if test "x$as_val" = x""yes; then :
cat >>confdefs.h <<_ACEOF
#define CRAY_STACKSEG_END $ac_func
_ACEOF
break
fi
done
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking stack direction for C alloca" >&5
$as_echo_n "checking stack direction for C alloca... " >&6; }
if test "${ac_cv_c_stack_direction+set}" = set; then :
$as_echo_n "(cached) " >&6
else
if test "$cross_compiling" = yes; then :
ac_cv_c_stack_direction=0
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
$ac_includes_default
int
find_stack_direction ()
{
static char *addr = 0;
auto char dummy;
if (addr == 0)
{
addr = &dummy;
return find_stack_direction ();
}
else
return (&dummy > addr) ? 1 : -1;
}
int
main ()
{
return find_stack_direction () < 0;
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
ac_cv_c_stack_direction=1
else
ac_cv_c_stack_direction=-1
fi
rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
conftest.$ac_objext conftest.beam conftest.$ac_ext
fi
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_stack_direction" >&5
$as_echo "$ac_cv_c_stack_direction" >&6; }
cat >>confdefs.h <<_ACEOF
#define STACK_DIRECTION $ac_cv_c_stack_direction
_ACEOF
fi
for ac_header in sgtty.h termio.h termios.h sys/reg.h string.h proc_service.h sys/procfs.h thread_db.h linux/elf.h stdlib.h unistd.h errno.h fcntl.h signal.h sys/file.h malloc.h sys/ioctl.h netinet/in.h sys/socket.h netdb.h netinet/tcp.h arpa/inet.h sys/wait.h
do :
as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`

View file

@ -36,6 +36,7 @@ AC_ARG_PROGRAM
AC_HEADER_STDC
AC_FUNC_ALLOCA
AC_CHECK_HEADERS(sgtty.h termio.h termios.h sys/reg.h string.h dnl
proc_service.h sys/procfs.h thread_db.h linux/elf.h dnl
stdlib.h unistd.h dnl

View file

@ -57,10 +57,12 @@
#if HAVE_MALLOC_H
#include <malloc.h>
#endif
#if USE_WIN32API
#include <winsock2.h>
#endif
#if HAVE_ALLOCA_H
#include <alloca.h>
#endif
#ifndef HAVE_SOCKLEN_T
typedef int socklen_t;

View file

@ -38,6 +38,10 @@
#include <string.h>
#endif
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif
#if !HAVE_DECL_STRERROR
#ifndef strerror
extern char *strerror (int); /* X3.159-1989 4.11.6.2 */