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glibc/include/malloc.h

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Update. * stdio-common/itowa-digits.c (_itowa_lower_digits): Define as hidden. (_itowa_upper_digits): Likewise. * libio/stdio.c (_IO_stdin, _IO_stdout, _IO_stderr): Define as hidden. * libio/libio.h [_LIBC] (_IO_stdin, _IO_stdout, _IO_stderr): Declare as hidden. * libio/libioP.h: Declare _IO_file_jumps_mmap, _IO_wfile_jumps, _IO_wfile_jumps_mmap, _IO_proc_jumps, _IO_old_proc_jumps, _IO_str_jumps, _IO_wstr_jumps, _IO_file_jumps_internal, _IO_wfile_jumps_internal, and _IO_list_all_internal as hidden. * gmon/gmon.c (__bb_head): Define as hidden. * gmon/bb_exit_func.c (__bb_head): Declare as hidden. * argp/argp-parse.c (_argp_hang): Define as static. * include/libc-symbols.h (_INTVARDEF): Adjust for visibility handling in latest compilers. * inet/in6_addr.c (in6addr_any): Use INTVARDEF not INTDEF to define alias. * libio/fileops.c (_IO_file_jumps): Likewise. * libio/stdfiles.c (_IO_list_all): Likewise. * libio/wfileops.c (_IO_wfile_jumps): Likewise. * malloc/malloc.h: Move __libc_malloc_initialized declaration to include/malloc.h. * include/malloc.h: Add __libc_malloc_initialized declaration here. Mark variable hidden. * malloc/malloc.c: Include <malloc.h> not "malloc.h". * elf/dl-open.c (__libc_argc): Declare as hidden. (__libc_argv): Likewise. * sysdeps/generic/wordexp.c (__libc_argc): Declare as hidden. (__libc_argv): Likewise. * sysdeps/mach/hurd/i386/init-first.c: Define __libc_argc and __libc_argv as hidden. * sysdeps/mach/hurd/mips/init-first.c: Likewise. * sysdeps/mach/hurd/powerpc/init-first.c: Likewise. * sysdeps/unix/sysv/aix/init-first.c: Likewise. * sysdeps/unix/sysv/linux/init-first.c: Likewise.
2002-03-13 10:17:12 +08:00
#ifndef _MALLOC_H
ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486] Exporting functions and relying on symbol interposition from libc.so makes the choice of implementation dependent on DT_NEEDED order, which is not what some compiler drivers expect. This commit replaces one magic mechanism (symbol interposition) with another one (preprocessor-/compiler-based redirection). This makes the hand-over from the minimal malloc to the full malloc more explicit. Removing the ABI symbols is backwards-compatible because libc.so is always in scope, and the dynamic loader will find the malloc-related symbols there since commit f0b2132b35248c1f4a80f62a2c38cddcc802aa8c ("ld.so: Support moving versioned symbols between sonames [BZ #24741]"). Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-02-09 02:58:43 +08:00
update from main archive 970125 Sun Jan 26 05:41:42 1997 Ulrich Drepper <drepper@cygnus.com> * version.h (VERSION): Bump to 2.0. (RELEASE): Now it's "experimental". * Makefile (subdirs): Change $(malloc) to malloc. We have only one malloc implementation again. * malloc/*: Remove from GNU libc. * new-malloc/* Move to malloc/. * config.make.in (defines): Remove @USE_NEW_MALLOC@. * configure.in: Remove --enable-new-malloc option and check for malloc implementation choice. * malloc.h: We don't need to check for the implementation to use anymore. Simply include malloc/malloc.h. * malloc/Makefile (subdir): Change to malloc. * sysdeps/unix/sysv/linux/configure.in: Don't set malloc anymore. * Makefile: Add special goal to call generate only-MD5 based crypt library. * md5-crypt/Makefile: Likewise. * stdio-common/tstscanf.c: De-ANSI-declfy. Update copyright. (rounds): Change type to size_t to prevent warning. * wcsmbs/btowc.c: Reformat copyright. * wcsmbs/mbrlen.c: Likewise. * wcsmbs/mbsinit.c: Likewise. * wcsmbs/mbsnrtowcs.c: Likewise. * wcsmbs/mbsrtowcs.c: Likewise. * wcsmbs/wcpcpy.c: Likewise. * wcsmbs/wcpncpy.c: Likewise. * wcsmbs/wcscat.c: Likewise. * wcsmbs/wcscmp.c: Likewise. * wcsmbs/wcscoll.c: Likewise. * wcsmbs/wcscpy.c: Likewise. * wcsmbs/wcscspn.c: Likewise. * wcsmbs/wcsdup.c: Likewise. * wcsmbs/wcslen.c: Likewise. * wcsmbs/wcsncat.c: Likewise. * wcsmbs/wcsncpy.c: Likewise. * wcsmbs/wcsnrtombs.c: Likewise. * wcsmbs/wcsrtombs.c: Likewise. * wcsmbs/wcsspn.c: Likewise. * wcsmbs/wcsstr.c: Likewise. * wcsmbs/wcstod.c: Likewise. * wcsmbs/wcstof.c: Likewise. * wcsmbs/wcstok.c: Likewise. * wcsmbs/wcstol.c: Likewise. * wcsmbs/wcstold.c: Likewise. * wcsmbs/wcstoq.c: Likewise. * wcsmbs/wcstoul.c: Likewise. * wcsmbs/wcstouq.c: Likewise. * wcsmbs/wcswidth.c: Likewise. * wcsmbs/wcsxfrm.c: Likewise. * wcsmbs/wctob.c: Likewise. * wcsmbs/wcwidth.c: Likewise. * wcsmbs/wcwidth.h: Likewise. * wcsmbs/wmemchr.c: Likewise. * wcsmbs/wmemcmp.c: Likewise. * wcsmbs/wmemmove.c: Likewise. * wcsmbs/wmemset.c: Likewise. Sat Jan 25 03:34:14 1997 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/termbits.h: Protect against multiple inclusion. Reported by a sun <asun@zoology.washington.edu>. Likewise for scanf4.c * stdlib/stdlib.h: Declare reentrant function from rand48 family
1997-01-26 13:33:35 +08:00
#include <malloc/malloc.h>
Update. * stdio-common/itowa-digits.c (_itowa_lower_digits): Define as hidden. (_itowa_upper_digits): Likewise. * libio/stdio.c (_IO_stdin, _IO_stdout, _IO_stderr): Define as hidden. * libio/libio.h [_LIBC] (_IO_stdin, _IO_stdout, _IO_stderr): Declare as hidden. * libio/libioP.h: Declare _IO_file_jumps_mmap, _IO_wfile_jumps, _IO_wfile_jumps_mmap, _IO_proc_jumps, _IO_old_proc_jumps, _IO_str_jumps, _IO_wstr_jumps, _IO_file_jumps_internal, _IO_wfile_jumps_internal, and _IO_list_all_internal as hidden. * gmon/gmon.c (__bb_head): Define as hidden. * gmon/bb_exit_func.c (__bb_head): Declare as hidden. * argp/argp-parse.c (_argp_hang): Define as static. * include/libc-symbols.h (_INTVARDEF): Adjust for visibility handling in latest compilers. * inet/in6_addr.c (in6addr_any): Use INTVARDEF not INTDEF to define alias. * libio/fileops.c (_IO_file_jumps): Likewise. * libio/stdfiles.c (_IO_list_all): Likewise. * libio/wfileops.c (_IO_wfile_jumps): Likewise. * malloc/malloc.h: Move __libc_malloc_initialized declaration to include/malloc.h. * include/malloc.h: Add __libc_malloc_initialized declaration here. Mark variable hidden. * malloc/malloc.c: Include <malloc.h> not "malloc.h". * elf/dl-open.c (__libc_argc): Declare as hidden. (__libc_argv): Likewise. * sysdeps/generic/wordexp.c (__libc_argc): Declare as hidden. (__libc_argv): Likewise. * sysdeps/mach/hurd/i386/init-first.c: Define __libc_argc and __libc_argv as hidden. * sysdeps/mach/hurd/mips/init-first.c: Likewise. * sysdeps/mach/hurd/powerpc/init-first.c: Likewise. * sysdeps/unix/sysv/aix/init-first.c: Likewise. * sysdeps/unix/sysv/linux/init-first.c: Likewise.
2002-03-13 10:17:12 +08:00
Installed header hygiene (BZ#20366): Test of installed headers. This adds a test to ensure that the problems fixed in the last several patches do not recur. Each directory checks the headers that it installs for two properties: first, each header must be compilable in isolation, as both C and C++, under a representative combination of language and library conformance levels; second, there is a blacklist of identifiers that may not appear in any installed header, currently consisting of the legacy BSD typedefs. (There is an exemption for the headers that define those typedefs, and for the RPC headers. It may be necessary to make this more sophisticated if we add more stuff to the blacklist in the future.) In order for this test to work correctly, every wrapper header that actually defines something must guard those definitions with #ifndef _ISOMAC. This is the existing mechanism used by the conform/ tests to tell wrapper headers not to define anything that the public header wouldn't, and not to use anything from libc-symbols.h. conform/ only cares for headers that we need to check for standards conformance, whereas this test applies to *every* header. (Headers in include/ that are either installed directly, or are internal-use-only and do *not* correspond to any installed header, are not affected.) * scripts/check-installed-headers.sh: New script. * Rules: In each directory that defines header files to be installed, run check-installed-headers.sh on them as a special test. * Makefile: Likewise for the headers installed at top level. * include/aliases.h, include/alloca.h, include/argz.h * include/arpa/nameser.h, include/arpa/nameser_compat.h * include/elf.h, include/envz.h, include/err.h * include/execinfo.h, include/fpu_control.h, include/getopt.h * include/gshadow.h, include/ifaddrs.h, include/libintl.h * include/link.h, include/malloc.h, include/mcheck.h * include/mntent.h, include/netinet/ether.h * include/nss.h, include/obstack.h, include/printf.h * include/pty.h, include/resolv.h, include/rpc/auth.h * include/rpc/auth_des.h, include/rpc/auth_unix.h * include/rpc/clnt.h, include/rpc/des_crypt.h * include/rpc/key_prot.h, include/rpc/netdb.h * include/rpc/pmap_clnt.h, include/rpc/pmap_prot.h * include/rpc/pmap_rmt.h, include/rpc/rpc.h * include/rpc/rpc_msg.h, include/rpc/svc.h * include/rpc/svc_auth.h, include/rpc/xdr.h * include/rpcsvc/nis_callback.h, include/rpcsvc/nislib.h * include/rpcsvc/yp.h, include/rpcsvc/ypclnt.h * include/rpcsvc/ypupd.h, include/shadow.h * include/stdio_ext.h, include/sys/epoll.h * include/sys/file.h, include/sys/gmon.h, include/sys/ioctl.h * include/sys/prctl.h, include/sys/profil.h * include/sys/statfs.h, include/sys/sysctl.h * include/sys/sysinfo.h, include/ttyent.h, include/utmp.h * sysdeps/arm/nacl/include/bits/setjmp.h * sysdeps/mips/include/sys/asm.h * sysdeps/unix/sysv/linux/include/sys/sysinfo.h * sysdeps/unix/sysv/linux/include/sys/timex.h * sysdeps/x86/fpu/include/bits/fenv.h: Add #ifndef _ISOMAC guard around internal declarations. Add multiple-inclusion guard if not already present.
2016-08-24 09:19:17 +08:00
# ifndef _ISOMAC
ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486] Exporting functions and relying on symbol interposition from libc.so makes the choice of implementation dependent on DT_NEEDED order, which is not what some compiler drivers expect. This commit replaces one magic mechanism (symbol interposition) with another one (preprocessor-/compiler-based redirection). This makes the hand-over from the minimal malloc to the full malloc more explicit. Removing the ABI symbols is backwards-compatible because libc.so is always in scope, and the dynamic loader will find the malloc-related symbols there since commit f0b2132b35248c1f4a80f62a2c38cddcc802aa8c ("ld.so: Support moving versioned symbols between sonames [BZ #24741]"). Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-02-09 02:58:43 +08:00
# include <rtld-malloc.h>
Update. * stdio-common/itowa-digits.c (_itowa_lower_digits): Define as hidden. (_itowa_upper_digits): Likewise. * libio/stdio.c (_IO_stdin, _IO_stdout, _IO_stderr): Define as hidden. * libio/libio.h [_LIBC] (_IO_stdin, _IO_stdout, _IO_stderr): Declare as hidden. * libio/libioP.h: Declare _IO_file_jumps_mmap, _IO_wfile_jumps, _IO_wfile_jumps_mmap, _IO_proc_jumps, _IO_old_proc_jumps, _IO_str_jumps, _IO_wstr_jumps, _IO_file_jumps_internal, _IO_wfile_jumps_internal, and _IO_list_all_internal as hidden. * gmon/gmon.c (__bb_head): Define as hidden. * gmon/bb_exit_func.c (__bb_head): Declare as hidden. * argp/argp-parse.c (_argp_hang): Define as static. * include/libc-symbols.h (_INTVARDEF): Adjust for visibility handling in latest compilers. * inet/in6_addr.c (in6addr_any): Use INTVARDEF not INTDEF to define alias. * libio/fileops.c (_IO_file_jumps): Likewise. * libio/stdfiles.c (_IO_list_all): Likewise. * libio/wfileops.c (_IO_wfile_jumps): Likewise. * malloc/malloc.h: Move __libc_malloc_initialized declaration to include/malloc.h. * include/malloc.h: Add __libc_malloc_initialized declaration here. Mark variable hidden. * malloc/malloc.c: Include <malloc.h> not "malloc.h". * elf/dl-open.c (__libc_argc): Declare as hidden. (__libc_argv): Likewise. * sysdeps/generic/wordexp.c (__libc_argc): Declare as hidden. (__libc_argv): Likewise. * sysdeps/mach/hurd/i386/init-first.c: Define __libc_argc and __libc_argv as hidden. * sysdeps/mach/hurd/mips/init-first.c: Likewise. * sysdeps/mach/hurd/powerpc/init-first.c: Likewise. * sysdeps/unix/sysv/aix/init-first.c: Likewise. * sysdeps/unix/sysv/linux/init-first.c: Likewise.
2002-03-13 10:17:12 +08:00
* include/fcntl.h: Declare __libc_creat. * sysdeps/mach/hurd/Makefile (libmachuser-link.so-no-z-defs, libhurduser-link.so-no-z-defs): New variables. * malloc/malloc.c: Revert last change. * malloc/malloc.h (_int_*): Move these decls to ... * include/malloc.h: ... here. Add attribute_hidden. (_int_valloc): Declare it too.
2003-01-13 11:42:27 +08:00
struct malloc_state;
typedef struct malloc_state *mstate;
Installed header hygiene (BZ#20366): Test of installed headers. This adds a test to ensure that the problems fixed in the last several patches do not recur. Each directory checks the headers that it installs for two properties: first, each header must be compilable in isolation, as both C and C++, under a representative combination of language and library conformance levels; second, there is a blacklist of identifiers that may not appear in any installed header, currently consisting of the legacy BSD typedefs. (There is an exemption for the headers that define those typedefs, and for the RPC headers. It may be necessary to make this more sophisticated if we add more stuff to the blacklist in the future.) In order for this test to work correctly, every wrapper header that actually defines something must guard those definitions with #ifndef _ISOMAC. This is the existing mechanism used by the conform/ tests to tell wrapper headers not to define anything that the public header wouldn't, and not to use anything from libc-symbols.h. conform/ only cares for headers that we need to check for standards conformance, whereas this test applies to *every* header. (Headers in include/ that are either installed directly, or are internal-use-only and do *not* correspond to any installed header, are not affected.) * scripts/check-installed-headers.sh: New script. * Rules: In each directory that defines header files to be installed, run check-installed-headers.sh on them as a special test. * Makefile: Likewise for the headers installed at top level. * include/aliases.h, include/alloca.h, include/argz.h * include/arpa/nameser.h, include/arpa/nameser_compat.h * include/elf.h, include/envz.h, include/err.h * include/execinfo.h, include/fpu_control.h, include/getopt.h * include/gshadow.h, include/ifaddrs.h, include/libintl.h * include/link.h, include/malloc.h, include/mcheck.h * include/mntent.h, include/netinet/ether.h * include/nss.h, include/obstack.h, include/printf.h * include/pty.h, include/resolv.h, include/rpc/auth.h * include/rpc/auth_des.h, include/rpc/auth_unix.h * include/rpc/clnt.h, include/rpc/des_crypt.h * include/rpc/key_prot.h, include/rpc/netdb.h * include/rpc/pmap_clnt.h, include/rpc/pmap_prot.h * include/rpc/pmap_rmt.h, include/rpc/rpc.h * include/rpc/rpc_msg.h, include/rpc/svc.h * include/rpc/svc_auth.h, include/rpc/xdr.h * include/rpcsvc/nis_callback.h, include/rpcsvc/nislib.h * include/rpcsvc/yp.h, include/rpcsvc/ypclnt.h * include/rpcsvc/ypupd.h, include/shadow.h * include/stdio_ext.h, include/sys/epoll.h * include/sys/file.h, include/sys/gmon.h, include/sys/ioctl.h * include/sys/prctl.h, include/sys/profil.h * include/sys/statfs.h, include/sys/sysctl.h * include/sys/sysinfo.h, include/ttyent.h, include/utmp.h * sysdeps/arm/nacl/include/bits/setjmp.h * sysdeps/mips/include/sys/asm.h * sysdeps/unix/sysv/linux/include/sys/sysinfo.h * sysdeps/unix/sysv/linux/include/sys/timex.h * sysdeps/x86/fpu/include/bits/fenv.h: Add #ifndef _ISOMAC guard around internal declarations. Add multiple-inclusion guard if not already present.
2016-08-24 09:19:17 +08:00
# endif /* !_ISOMAC */
malloc: Basic support for memory tagging in the malloc() family This patch adds the basic support for memory tagging. Various flavours are supported, particularly being able to turn on tagged memory at run-time: this allows the same code to be used on systems where memory tagging support is not present without neededing a separate build of glibc. Also, depending on whether the kernel supports it, the code will use mmap for the default arena if morecore does not, or cannot support tagged memory (on AArch64 it is not available). All the hooks use function pointers to allow this to work without needing ifuncs. Reviewed-by: DJ Delorie <dj@redhat.com>
2020-12-21 23:03:03 +08:00
Update. * stdio-common/itowa-digits.c (_itowa_lower_digits): Define as hidden. (_itowa_upper_digits): Likewise. * libio/stdio.c (_IO_stdin, _IO_stdout, _IO_stderr): Define as hidden. * libio/libio.h [_LIBC] (_IO_stdin, _IO_stdout, _IO_stderr): Declare as hidden. * libio/libioP.h: Declare _IO_file_jumps_mmap, _IO_wfile_jumps, _IO_wfile_jumps_mmap, _IO_proc_jumps, _IO_old_proc_jumps, _IO_str_jumps, _IO_wstr_jumps, _IO_file_jumps_internal, _IO_wfile_jumps_internal, and _IO_list_all_internal as hidden. * gmon/gmon.c (__bb_head): Define as hidden. * gmon/bb_exit_func.c (__bb_head): Declare as hidden. * argp/argp-parse.c (_argp_hang): Define as static. * include/libc-symbols.h (_INTVARDEF): Adjust for visibility handling in latest compilers. * inet/in6_addr.c (in6addr_any): Use INTVARDEF not INTDEF to define alias. * libio/fileops.c (_IO_file_jumps): Likewise. * libio/stdfiles.c (_IO_list_all): Likewise. * libio/wfileops.c (_IO_wfile_jumps): Likewise. * malloc/malloc.h: Move __libc_malloc_initialized declaration to include/malloc.h. * include/malloc.h: Add __libc_malloc_initialized declaration here. Mark variable hidden. * malloc/malloc.c: Include <malloc.h> not "malloc.h". * elf/dl-open.c (__libc_argc): Declare as hidden. (__libc_argv): Likewise. * sysdeps/generic/wordexp.c (__libc_argc): Declare as hidden. (__libc_argv): Likewise. * sysdeps/mach/hurd/i386/init-first.c: Define __libc_argc and __libc_argv as hidden. * sysdeps/mach/hurd/mips/init-first.c: Likewise. * sysdeps/mach/hurd/powerpc/init-first.c: Likewise. * sysdeps/unix/sysv/aix/init-first.c: Likewise. * sysdeps/unix/sysv/linux/init-first.c: Likewise.
2002-03-13 10:17:12 +08:00
#endif
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