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* malloc/malloc.c (munmap_chunk): Add sanity checks.

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* sysdeps/pthread/configure: Fix comment.
This commit is contained in:
Ulrich Drepper 2005-11-06 17:08:48 +00:00
parent d0b2cbf837
commit 8e635611c9
6 changed files with 31 additions and 37 deletions
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6
ChangeLog
View file

@ -1,3 +1,9 @@
2005-11-06 Ulrich Drepper <drepper@redhat.com>
* malloc/malloc.c (munmap_chunk): Add sanity checks.
* sysdeps/pthread/configure: Fix comment.
2005-11-05 Ulrich Drepper <drepper@redhat.com>
* configure.in: Remove gnu_as definition and everything using it.

33
configure vendored
View file

@ -313,7 +313,7 @@ ac_includes_default="\
# include <unistd.h>
#endif"
ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS with_fp with_cvs enable_check_abi oldest_abi bindnow force_install all_warnings build build_cpu build_vendor build_os host host_cpu host_vendor host_os subdirs add_ons base_machine sysnames INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LN_S CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC OBJEXT BUILD_CC cross_compiling CPP CXX CXXFLAGS ac_ct_CXX AR OBJDUMP RANLIB ac_ct_RANLIB MIG AS LD PWD_P MAKE MSGFMT MAKEINFO SED AUTOCONF SYSINCLUDES libc_cv_gcc_static_libgcc BASH libc_cv_have_bash2 KSH libc_cv_have_ksh AWK PERL INSTALL_INFO BISON VERSIONING libc_cv_asm_protected_directive libc_cv_cc_with_libunwind libc_cv_z_nodelete libc_cv_z_nodlopen libc_cv_z_initfirst libc_cv_z_relro libc_cv_Bgroup libc_cv_libgcc_s_suffix libc_cv_as_needed ASFLAGS_config libc_cv_z_combreloc libc_cv_z_execstack libc_cv_fpie fno_unit_at_a_time libc_cv_ssp libc_cv_have_initfini no_whole_archive exceptions LIBGD have_libaudit have_selinux EGREP sizeof_long_double libc_cv_gcc_unwind_find_fde uname_sysname uname_release uname_version old_glibc_headers libc_cv_slibdir libc_cv_localedir libc_cv_sysconfdir libc_cv_rootsbindir libc_cv_forced_unwind use_ldconfig ldd_rewrite_script gnu_ld gnu_as elf xcoff static shared pic_default profile omitfp bounded static_nss nopic_initfini DEFINES mach_interface_list VERSION RELEASE LIBOBJS LTLIBOBJS'
ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS with_fp with_cvs enable_check_abi oldest_abi bindnow force_install all_warnings build build_cpu build_vendor build_os host host_cpu host_vendor host_os subdirs add_ons base_machine sysnames INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LN_S CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC OBJEXT BUILD_CC cross_compiling CPP CXX CXXFLAGS ac_ct_CXX AR OBJDUMP RANLIB ac_ct_RANLIB MIG AS LD PWD_P MAKE MSGFMT MAKEINFO SED AUTOCONF SYSINCLUDES libc_cv_gcc_static_libgcc BASH libc_cv_have_bash2 KSH libc_cv_have_ksh AWK PERL INSTALL_INFO BISON VERSIONING libc_cv_asm_protected_directive libc_cv_cc_with_libunwind libc_cv_z_nodelete libc_cv_z_nodlopen libc_cv_z_initfirst libc_cv_z_relro libc_cv_Bgroup libc_cv_libgcc_s_suffix libc_cv_as_needed ASFLAGS_config libc_cv_z_combreloc libc_cv_z_execstack libc_cv_fpie fno_unit_at_a_time libc_cv_ssp libc_cv_have_initfini no_whole_archive exceptions LIBGD have_libaudit have_selinux EGREP sizeof_long_double libc_cv_gcc_unwind_find_fde uname_sysname uname_release uname_version old_glibc_headers libc_cv_slibdir libc_cv_localedir libc_cv_sysconfdir libc_cv_rootsbindir libc_cv_forced_unwind use_ldconfig ldd_rewrite_script elf xcoff static shared pic_default profile omitfp bounded static_nss nopic_initfini DEFINES mach_interface_list VERSION RELEASE LIBOBJS LTLIBOBJS'
ac_subst_files=''
# Initialize some variables set by options.
@ -1793,11 +1793,6 @@ config_os="`echo $config_os | sed 's/^unknown-//'`"
# Some configurations imply other options.
case "$host_os" in
gnu* | linux* | bsd4.4* | netbsd* | freebsd*)
# These systems always use GNU tools.
gnu_ld=yes gnu_as=yes ;;
esac
case "$host_os" in
# i586-linuxaout is mangled into i586-pc-linux-gnuaout
linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*)
;;
@ -5360,7 +5355,7 @@ _ACEOF
fi
if test $libc_cv_visibility_attribute = yes -a $gnu_ld = yes; then
if test $libc_cv_visibility_attribute = yes; then
echo "$as_me:$LINENO: checking whether to put _rtld_local into .sdata section" >&5
echo $ECHO_N "checking whether to put _rtld_local into .sdata section... $ECHO_C" >&6
if test "${libc_cv_have_sdata_section+set}" = set; then
@ -5895,7 +5890,7 @@ _ACEOF
fi
fi
if test $elf = yes -a $gnu_ld = yes; then
if test $elf = yes; then
echo "$as_me:$LINENO: checking whether cc puts quotes around section names" >&5
echo $ECHO_N "checking whether cc puts quotes around section names... $ECHO_C" >&6
if test "${libc_cv_have_section_quotes+set}" = set; then
@ -7638,18 +7633,6 @@ fi
if test $gnu_ld = yes; then
cat >>confdefs.h <<\_ACEOF
#define HAVE_GNU_LD 1
_ACEOF
fi
if test $gnu_as = yes; then
cat >>confdefs.h <<\_ACEOF
#define HAVE_GNU_AS 1
_ACEOF
fi
if test $elf = yes; then
cat >>confdefs.h <<\_ACEOF
#define HAVE_ELF 1
@ -7666,13 +7649,7 @@ fi
if test $shared = default; then
if test $gnu_ld = yes; then
shared=$elf
else
# For now we do not assume shared libs are available. In future more
# tests might become available.
shared=no
fi
shared=$elf
fi
if test x"$libc_cv_idn" = xyes; then
@ -8446,8 +8423,6 @@ s,@libc_cv_rootsbindir@,$libc_cv_rootsbindir,;t t
s,@libc_cv_forced_unwind@,$libc_cv_forced_unwind,;t t
s,@use_ldconfig@,$use_ldconfig,;t t
s,@ldd_rewrite_script@,$ldd_rewrite_script,;t t
s,@gnu_ld@,$gnu_ld,;t t
s,@gnu_as@,$gnu_as,;t t
s,@elf@,$elf,;t t
s,@xcoff@,$xcoff,;t t
s,@static@,$static,;t t

20
malloc/malloc.c
View file

@ -3268,19 +3268,31 @@ munmap_chunk(p) mchunkptr p;
#endif
{
INTERNAL_SIZE_T size = chunksize(p);
int ret;
assert (chunk_is_mmapped(p));
#if 0
assert(! ((char*)p >= mp_.sbrk_base && (char*)p < mp_.sbrk_base + mp_.sbrked_mem));
assert((mp_.n_mmaps > 0));
#endif
assert(((p->prev_size + size) & (mp_.pagesize-1)) == 0);
uintptr_t block = (uintptr_t) p - p->prev_size;
size_t total_size = p->prev_size + size;
/* Unfortunately we have to do the compilers job by hand here. Normally
we would test BLOCK and TOTAL-SIZE separately for compliance with the
page size. But gcc does not recognize the optimization possibility
(in the moment at least) so we combine the two values into one before
the bit test. */
if (__builtin_expect (((block | total_size) & (mp_.pagesize - 1)) != 0, 0))
{
malloc_printerr (check_action, "munmap_chunk(): invalid pointer",
chunk2mem (p));
return;
}
mp_.n_mmaps--;
mp_.mmapped_mem -= (size + p->prev_size);
mp_.mmapped_mem -= total_size;
ret = munmap((char *)p - p->prev_size, size + p->prev_size);
int ret = munmap(block, total_size);
/* munmap returns non-zero on failure */
assert(ret == 0);

4
nptl/ChangeLog
View file

@ -1,3 +1,7 @@
2005-11-06 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/configure: Removed.
2005-11-05 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/ia64/pt-initfini.c: Remove trace of

3
nptl/sysdeps/unix/sysv/linux/configure vendored
View file

@ -1,3 +0,0 @@
# Local configure fragment for sysdeps/unix/sysv/linux.
DEFINES="$DEFINES -D_LIBC_REENTRANT"

2
sysdeps/pthread/configure vendored
View file

@ -1,3 +1,3 @@
# Local configure fragment for sysdeps/unix/sysv/linux.
# Local configure fragment for sysdeps/pthread.
DEFINES="$DEFINES -D_LIBC_REENTRANT"