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https://github.com/jart/cosmopolitan.git
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97b7116953
After going through the MODE=dbg and MODE=zero build modes, a bunch of little issues were identified, which have been addressed. Fixing those issues created even more troubles for the project, because it improved our ability to detect latent problems which are getting fixed so fast.
100 lines
4.1 KiB
C
100 lines
4.1 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 2023 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/calls/calls.h"
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#include "libc/calls/ucontext.h"
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#include "libc/limits.h"
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#include "libc/mem/gc.internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/runtime/stack.h"
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#include "libc/runtime/symbols.internal.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/testlib/subprocess.h"
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#include "libc/testlib/testlib.h"
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#include "libc/thread/thread.h"
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#include "libc/x/x.h"
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#include "third_party/libcxx/math.h"
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bool gotsome;
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ucontext_t uc, goback;
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char testlib_enable_tmp_setup_teardown;
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void check_args(long x0, long x1, long x2, long x3, long x4, long x5, double f0,
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double f1, double f2, double f3, double f4, double f5) {
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EXPECT_EQ(LONG_MIN + 100, x0);
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EXPECT_EQ(LONG_MIN + 101, x1);
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EXPECT_EQ(LONG_MIN + 102, x2);
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EXPECT_EQ(LONG_MIN + 103, x3);
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EXPECT_EQ(LONG_MIN + 104, x4);
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EXPECT_EQ(LONG_MIN + 105, x5);
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EXPECT_TRUE(20. == f0);
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EXPECT_TRUE(21. == f1);
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EXPECT_TRUE(22. == f2);
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EXPECT_TRUE(23. == f3);
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EXPECT_TRUE(24. == f4);
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EXPECT_TRUE(25. == f5);
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gotsome = true;
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}
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TEST(makecontext, args) {
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char stack[1024];
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__interruptible = false;
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getcontext(&uc);
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uc.uc_link = &goback;
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uc.uc_stack.ss_sp = stack;
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uc.uc_stack.ss_size = sizeof(stack);
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makecontext(&uc, check_args, 12, 20., 21., 22., LONG_MIN + 100,
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LONG_MIN + 101, LONG_MIN + 102, LONG_MIN + 103, LONG_MIN + 104,
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LONG_MIN + 105, 23., 24., 25.);
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swapcontext(&goback, &uc);
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EXPECT_TRUE(gotsome);
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}
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noasan noubsan void itsatrap(int x, int y) {
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*(int *)(intptr_t)x = scalbn(x, y);
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}
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TEST(makecontext, crash) {
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SPAWN(fork);
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getcontext(&uc);
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uc.uc_link = 0;
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uc.uc_stack.ss_sp = NewCosmoStack();
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uc.uc_stack.ss_size = GetStackSize();
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makecontext(&uc, exit, 1, 42);
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setcontext(&uc);
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EXITS(42);
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}
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TEST(makecontext, backtrace) {
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SPAWN(fork);
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ASSERT_SYS(0, 0, close(2));
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ASSERT_SYS(0, 2, creat("log", 0644));
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getcontext(&uc);
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uc.uc_link = 0;
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uc.uc_stack.ss_sp = NewCosmoStack();
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uc.uc_stack.ss_size = GetStackSize();
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makecontext(&uc, itsatrap, 2, 123, 456);
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setcontext(&uc);
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EXITS(128 + SIGSEGV);
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if (!GetSymbolTable()) return;
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char *log = gc(xslurp("log", 0));
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EXPECT_NE(0, strstr(log, "itsatrap"));
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EXPECT_NE(0, strstr(log, "runcontext"));
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EXPECT_NE(0, strstr(log, "makecontext_backtrace"));
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}
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