Remove obsolete __stack_chk_fail_local.

Clang doesn't use this.

Bug: N/A
Test: x86 emulator builds and boots
Change-Id: I2865c0d568a644f61f34bdea539daff5224896bc

libc/arch-common/bionic/crtbegin.c

@@ -69,6 +69,3 @@ __asm__(PRE "movq %rsp,%rdi; andq $~0xf,%rsp; callq _start_main" POST);
 #include "__dso_handle.h"
 #include "atexit.h"
 #include "pthread_atfork.h"
-#ifdef __i386__
-# include "../../arch-x86/bionic/__stack_chk_fail_local.h"
-#endif

libc/arch-common/bionic/crtbegin_so.c

@@ -57,6 +57,3 @@ void __on_dlclose() {
 # include "atexit.h"
 #endif
 #include "pthread_atfork.h"
-#ifdef __i386__
-# include "../../arch-x86/bionic/__stack_chk_fail_local.h"
-#endif

libc/arch-x86/bionic/__stack_chk_fail_local.h

@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2012 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-
-/*
-   __stack_chk_fail routine is runtime part of stack protector compiler
-   feature. It's implemented in libc and represents die routine when stack
-   corruption is detected.
-
-   Calls are generated by compiler and injected into user functions when
-   -fstack-protector* options are used.
-
-   __stack_chk_fail_local is wrapper for __stack_chk_fail. Compiler generates
-   wrapper calls instead for PIC code only and only on IA32 for optimization
-   purpose (see gcc/config/i386/i386.c). Wrapper body is always included into
-   executable or library. This is the idea of optimization.
-
-   Glibc is doing this via libc_nonshared.a which is linked automatically
-   everytime with libc.so. In bionic we have to bring it within crtfiles
-   because libc.so is real library and not a link script like libc.so at glibc.
-
-   For x86_64 or non-PIC code compiler always generates __stack_chk_fail calls.
-*/
-
-#ifdef __i386__
-extern void __stack_chk_fail();
-
-__LIBC_HIDDEN__ void __stack_chk_fail_local() {
-  __stack_chk_fail();
-}
-#endif

linker/arch/x86/begin.c

@@ -48,9 +48,3 @@ __LIBC_HIDDEN__ void _start() {
 
   /* Unreachable */
 }
-
-/* Since linker has its own version of crtbegin (this file) it should have */
-/* own version of __stack_chk_fail_local for the case when it's built with */
-/* stack protector feature */
-
-#include "arch-x86/bionic/__stack_chk_fail_local.h"