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Better resolution for issue #11849: Ensure that free()d memory arenas are really released

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on POSIX systems supporting anonymous memory mappings.  Patch by Charles-François Natali.
This commit is contained in:
Antoine Pitrou 2011-11-26 01:11:02 +01:00
parent 61ea8a0d28
commit f0effe6379
5 changed files with 35 additions and 65 deletions
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36
configure vendored
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@ -9401,8 +9401,8 @@ for ac_func in alarm accept4 setitimer getitimer bind_textdomain_codeset chown \
getgrouplist getgroups getlogin getloadavg getpeername getpgid getpid \
getpriority getresuid getresgid getpwent getspnam getspent getsid getwd \
if_nameindex \
initgroups kill killpg lchmod lchown lockf linkat lstat lutimes memrchr \
mbrtowc mkdirat mkfifo \
initgroups kill killpg lchmod lchown lockf linkat lstat lutimes mmap \
memrchr mbrtowc mkdirat mkfifo \
mkfifoat mknod mknodat mktime mremap nice openat pathconf pause pipe2 plock poll \
posix_fallocate posix_fadvise pread \
pthread_init pthread_kill putenv pwrite readlink readlinkat readv realpath renameat \
@ -9784,34 +9784,6 @@ $as_echo "no" >&6; }
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether mallopt can set malloc mmap threshold" >&5
$as_echo_n "checking whether mallopt can set malloc mmap threshold... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <malloc.h>
int
main ()
{
mallopt(M_MMAP_THRESHOLD, 256 * 1024)
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
$as_echo "#define HAVE_MALLOPT_MMAP_THRESHOLD 1" >>confdefs.h
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for broken unsetenv" >&5
$as_echo_n "checking for broken unsetenv... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@ -14591,8 +14563,8 @@ esac
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
# Files that config.status was made for.
config_files="$ac_config_files"
config_headers="$ac_config_headers"
config_files="`echo $ac_config_files`"
config_headers="`echo $ac_config_headers`"
_ACEOF