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| author | Ulrich Drepper <drepper@redhat.com> | 2005-02-21 23:14:10 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2005-02-21 23:14:10 +0000 |
| commit | 553cc5f9ad5408fc7fb49a33417acc1446f0c548 (patch) | |
| tree | d4feec607359c614b579876e8035ce539dfac3b8 /string/bits | |
| parent | 53360aa17295db38e5d5e0ed16548f5f002f0fa2 (diff) | |
| download | glibc-553cc5f9ad5408fc7fb49a33417acc1446f0c548.tar glibc-553cc5f9ad5408fc7fb49a33417acc1446f0c548.tar.gz glibc-553cc5f9ad5408fc7fb49a33417acc1446f0c548.tar.bz2 glibc-553cc5f9ad5408fc7fb49a33417acc1446f0c548.zip | |
* 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>
Diffstat (limited to 'string/bits')
| -rw-r--r-- | string/bits/string3.h | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/string/bits/string3.h b/string/bits/string3.h index 87cbe35bb1..8fb66e41c8 100644 --- a/string/bits/string3.h +++ b/string/bits/string3.h @@ -1,4 +1,4 @@ -/* Copyright (C) 2004 Free Software Foundation, Inc. +/* 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 @@ -80,10 +80,19 @@ __mempcpy_ichk (void *__restrict __dest, const void *__restrict __src, #endif +/* The first two tests here help to catch a somewhat common problem + where the second and third parameter are transposed. This is + especially problematic if the intended fill value is zero. In this + case no work is done at all. We detect these problems by referring + non-existing functions. */ +extern char *__memset_zero_constant_len_parameter (void *, int, size_t, + size_t); #define memset(dest, ch, len) \ - ((__bos0 (dest) != (size_t) -1) \ - ? __builtin___memset_chk (dest, ch, len, __bos0 (dest)) \ - : __memset_ichk (dest, ch, len)) + (__builtin_constant_p (len) && (len) == 0 \ + ? __memset_zero_constant_len_parameter (dest, ch, len, 0) \ + : ((__bos0 (dest) != (size_t) -1) \ + ? __builtin___memset_chk (dest, ch, len, __bos0 (dest)) \ + : __memset_ichk (dest, ch, len))) static __inline__ void * __attribute__ ((__always_inline__)) __memset_ichk (void *__dest, int __ch, size_t __len) |