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src/base/stack_canary_linux_unittest.cc
Avi Drissman e4622aaecc Update copyright headers in base/
The methodology used to generate this CL is documented in
https://crbug.com/1098010#c34.

An earlier version of this CL, https://crrev.com/c/3879904,
was reverted due to an issue that was resolved with
https://crrev.com/c/3881211.

No-Try: true
Bug: 1098010
Change-Id: Ibd6ffb97e66835bc299fe7b85876c3e2927b2345
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3883841
Auto-Submit: Avi Drissman <avi@chromium.org>
Owners-Override: Avi Drissman <avi@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1044747}
2022-09-08 20:36:06 +00:00

45 lines
1.5 KiB
C++

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/stack_canary_linux.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
#if defined(LIBC_GLIBC) && \
(defined(ARCH_CPU_ARM_FAMILY) || defined(ARCH_CPU_X86_FAMILY))
namespace {
__attribute__((noinline, optnone)) void ResetCanaryAndReturn() {
// Create a buffer >=8 bytes to force the stack protector on this function,
// which should work as long as -fno-stack-protector isn't passed in the
// default options. We compile this file with -fstack-protector-all, but it
// may be overridden with -fstack-protector or -fstack-protector-strong.
[[maybe_unused]] char buffer[10];
ResetStackCanaryIfPossible();
}
} // namespace
// Essentially tests that ResetStackCanaryIfPossible() changes the
// actual reference canary that is checked in the function prologue.
TEST(StackCanary, ChangingStackCanaryCrashesOnReturn) {
ASSERT_DEATH(ResetCanaryAndReturn(), "stack smashing");
}
#if !defined(NDEBUG)
// Tests that the useful debug message works--specifically that on death, it
// prints out the bug URL with useful information.
TEST(StackCanary, ChangingStackCanaryPrintsDebugMessage) {
SetStackSmashingEmitsDebugMessage();
ASSERT_DEATH(ResetCanaryAndReturn(), "crbug\\.com/1206626");
}
#endif // !defined(NDEBUG)
#endif // defined(LIBC_GLIBC) && (defined(ARCH_CPU_ARM_FAMILY) ||
// defined(ARCH_CPU_X86_FAMILY))
} // namespace base