* sysdeps/unix/sysv/linux/libc_fatal.c: Print backtrace and memory

	map if requested.
	* debug/chk_fail.c: Request backtrace and memory map dump.

	* Versions.def: Add GLIBC_2.4 for libc.
	* debug/fgets_chk.c: New file.
	* debug/fgets_u_chk.c: New file.
	* debug/getcwd_chk.c: New file.
	* debug/getwd_chk.c: New file.
	* debug/readlink_chk.c: New file.
	* debug/read_chk.c: New file.
	* debug/pread_chk.c: New file.
	* debug/pread64_chk.c: New file.
	* debug/recv_chk.c: New file.
	* debug/recvfrom_chk.c: New file.
	* debug/Versions: Add all new functions with version GLIBC_2.4.
	* debug/Makefile (routines): Add fgets_chk, fgets_u_chk, read_chk,
	pread_chk, pread64_chk, recv_chk, recvfrom_chk, readlink_chk,
	getwd_chk, and getcwd_chk.  Plus appropriate CFLAGS definitions.
	* debug/tst-chk1.c: Add more tests.
	* libio/bits/stdio2.h: Add macros for fgets and fgets_unlocked.
	* include/stdio.h: Declare __fgets_chk and __fgets_unlocked_chk.
	* posix/unistd.h: Include <bits/unistd.h> for fortification.
	* posix/bits/unistd.h: New file.
	* posix/Makefile (headers): Add bits/unistd.h.
	* socket/sys/socket.h: Include <bits/socket2.h> for fortification.
	* socket/bits/socket2.h: New file.
	* socket/Makefile (headers): Add bits/socket2.h.

	* string/bits/string3.h: Extend memset macro to check for zero 3rd
	parameter and use __memset_zero_constant_len_parameter in that case.
	* sysdeps/generic/memset_chk.c: Add
	__memset_zero_constant_len_parameter alias and linker warning.
	* debug/Versions: Add __memset_zero_constant_len_parameter to libc
	with version GLIBC_2.4.

	* sysdeps/generic/bits/types.h: Don't unnecessarily use __extension__
	in __STD_TYPE definition.

2005-02-21  Jakub Jelinek  <jakub@redhat.com>

	* malloc/malloc.c (malloc_printerr): If MALLOC_CHECK_={5,7}, print
	the error message rather than program name.

2005-02-21  Ulrich Drepper  <drepper@redhat.com>

2 files changed, 13 insertions, 3 deletions

diff --git a/sysdeps/i386/i686/memset.S b/sysdeps/i386/i686/memset.S
index 561188ffec..0b47547141 100644
--- a/sysdeps/i386/i686/memset.S
+++ b/sysdeps/i386/i686/memset.S
@@ -1,6 +1,6 @@
 /* memset/bzero -- set memory area to CH/0
    Highly optimized version for ix86, x>=6.
-   Copyright (C) 1999, 2000, 2003 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2000, 2003, 2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
 
@@ -101,3 +101,9 @@ ENTRY (BP_SYM (memset))
 #endif
 END (BP_SYM (memset))
 libc_hidden_builtin_def (memset)
+
+#if defined PIC && !defined NOT_IN_libc && !BZERO_P
+strong_alias (__memset_chk, __memset_zero_constant_len_parameter)
+	.section .gnu.warning.__memset_zero_constant_len_parameter
+	.string "memset used with constant zero length parameter; this could be due to transposed parameters"
+#endif
diff --git a/sysdeps/i386/i686/memset_chk.S b/sysdeps/i386/i686/memset_chk.S
index d178654994..b71cf32a05 100644
--- a/sysdeps/i386/i686/memset_chk.S
+++ b/sysdeps/i386/i686/memset_chk.S
@@ -1,5 +1,5 @@
-/* Checking memset for x86-64.
-   Copyright (C) 2004 Free Software Foundation, Inc.
+/* Checking memset for i686.
+   Copyright (C) 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
@@ -32,4 +32,8 @@ ENTRY (__memset_chk)
 	jb	__chk_fail
 	jmp	memset
 END (__memset_chk)
+
+strong_alias (__memset_chk, __memset_zero_constant_len_parameter)
+	.section .gnu.warning.__memset_zero_constant_len_parameter
+	.string "memset used with constant zero length parameter; this could be due to transposed parameters"
 #endif