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MDEV-23491: __bss_start breaks compilation of various platforms

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Remove __bss_start & Co, because systen call "write" check buffer address and return EFAULT if it is wrong.
This commit is contained in:
Oleksandr Byelkin
2020-08-16 22:14:59 +02:00
parent 5796021174
commit ece0b0623c
3 changed files with 84 additions and 107 deletions
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67
unittest/mysys/stacktrace-t.c Normal file
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/* Copyright (c) 2020, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
#include <my_global.h>
#include <my_sys.h>
#include <stdio.h>
#include <my_stacktrace.h>
#include <tap.h>
char b_bss[10];
void test_my_safe_print_str()
{
char b_stack[10];
char *b_heap= strdup("LEGAL");
memcpy(b_stack, "LEGAL", 6);
memcpy(b_bss, "LEGAL", 6);
#ifndef __SANITIZE_ADDRESS__
fprintf(stderr, "\n===== stack =====\n");
my_safe_print_str(b_stack, 65535);
fprintf(stderr, "\n===== heap =====\n");
my_safe_print_str(b_heap, 65535);
fprintf(stderr, "\n===== BSS =====\n");
my_safe_print_str(b_bss, 65535);
fprintf(stderr, "\n===== data =====\n");
my_safe_print_str("LEGAL", 65535);
fprintf(stderr, "\n===== Above is a junk, but it is expected. =====\n");
#endif /*__SANITIZE_ADDRESS__*/
fprintf(stderr, "\n===== Nornal length test =====\n");
my_safe_print_str("LEGAL", 5);
fprintf(stderr, "\n===== NULL =====\n");
my_safe_print_str(0, 5);
#ifndef __SANITIZE_ADDRESS__
fprintf(stderr, "\n===== (const char*) 1 =====\n");
my_safe_print_str((const char*)1, 5);
#endif /*__SANITIZE_ADDRESS__*/
free(b_heap);
ok(1, "test_my_safe_print_str");
}
int main(int argc __attribute__((unused)), char **argv)
{
MY_INIT(argv[0]);
plan(1);
test_my_safe_print_str();
my_end(0);
return exit_status();
}