mirror of
https://github.com/jart/cosmopolitan.git
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4e56d89dcd
- Get ASAN working on Windows. - Deleting directories and then recreating them with the same name in a short period of time appears to be a no-no on Windows. - There's no reason to call FlushFileBuffers on close() for pipes, and it's harmful since it might block indefinitely for no good reason.
99 lines
3.9 KiB
C
99 lines
3.9 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/assert.h"
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#include "libc/bits/bits.h"
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#include "libc/bits/weaken.h"
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#include "libc/dce.h"
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#include "libc/log/log.h"
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#include "libc/macros.h"
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#include "libc/mem/alloca.h"
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#include "libc/nt/runtime.h"
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#include "libc/sysv/consts/nr.h"
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static noasan size_t __assert_strlen(const char *s) {
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size_t i = 0;
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while (s[i]) ++i;
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return i;
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}
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static noasan char *__assert_stpcpy(char *d, const char *s) {
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size_t i;
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for (i = 0;; ++i) {
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if (!(d[i] = s[i])) {
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return d + i;
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}
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}
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}
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static textsyscall noasan wontreturn void __assert_exit(int rc) {
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if (!IsWindows()) {
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asm volatile("syscall"
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: /* no outputs */
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: "a"(__NR_exit_group), "D"(rc)
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: "memory");
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unreachable;
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} else {
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ExitProcess(rc);
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}
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}
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static textsyscall noasan ssize_t __assert_write(const void *data,
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size_t size) {
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ssize_t rc;
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uint32_t wrote;
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if (!IsWindows()) {
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asm volatile("syscall"
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: "=a"(rc)
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: "0"(__NR_write), "D"(2), "S"(data), "d"(size)
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: "rcx", "r11", "memory");
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return rc;
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} else {
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if (WriteFile(GetStdHandle(kNtStdErrorHandle), data, size, &wrote, 0)) {
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return wrote;
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} else {
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return -1;
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}
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}
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}
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/**
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* Handles failure of assert() macro.
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*/
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relegated wontreturn noasan void __assert_fail(const char *expr,
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const char *file, int line) {
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static bool once;
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char *msg, *p, linebuf[16];
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unsigned i, exprlen, filelen;
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if (cmpxchg(&once, false, true)) {
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exprlen = expr ? __assert_strlen(expr) : 0;
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filelen = file ? __assert_strlen(file) : 0;
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p = msg = alloca(MIN(512, exprlen + filelen + 64));
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p = __assert_stpcpy(p, file);
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p = __assert_stpcpy(p, ":");
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if (line < 1) line = 1;
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for (i = 0; line; line /= 10) linebuf[i++] = '0' + line % 10;
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while (i) *p++ = linebuf[--i];
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p = __assert_stpcpy(p, ":");
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p = __assert_stpcpy(p, expr);
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p = __assert_stpcpy(p, "\r\n");
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__assert_write(msg, p - msg);
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if (weaken(__die)) weaken(__die)();
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}
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__assert_exit(23);
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}
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