Revert "fuzzing: Add supportsErrorInjection option to DawnWireServerFuzzer"
This reverts commit f58f69f66bacefb0aaf78e91b462b5db97cea391.
Reason for revert: This breaks the MSVC build because the whitebox end2end tests try to both import and export the error injector symbols from libdawn_native
Original change's description:
> fuzzing: Add supportsErrorInjection option to DawnWireServerFuzzer
>
> This option will be used by backends that support error injection so
> that errors can be injected into a "clean" corpus to generate a seed
> corpus with good examples of injected error conditions.
>
> Bug: dawn:295
> Change-Id: I837acdde6dd4274adb56edf8e4307427f8d6333b
> Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/14681
> Reviewed-by: Corentin Wallez <cwallez@chromium.org>
> Commit-Queue: Austin Eng <enga@chromium.org>
TBR=cwallez@chromium.org,kainino@chromium.org,enga@chromium.org
Change-Id: I14a15fcd094d431cbb8a29d5642a4a7fe6a11f4c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: dawn:295
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/14741
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>
diff --git a/docs/fuzzing.md b/docs/fuzzing.md
index 8c7b7ba..bd7cc61 100644
--- a/docs/fuzzing.md
+++ b/docs/fuzzing.md
@@ -4,23 +4,17 @@
The `dawn_wire_server_and_frontend_fuzzer` sets up Dawn using the Null backend, and passes inputs to the wire server. This fuzzes the `dawn_wire` deserialization, as well as Dawn's frontend validation.
-## `dawn_wire_server_and_vulkan_backend_fuzzer`
-
-The `dawn_wire_server_and_vulkan_backend_fuzzer` is like `dawn_wire_server_and_frontend_fuzzer` but it runs using a Vulkan CPU backend such as Swiftshader. This fuzzer supports error injection by using the first bytes of the fuzzing input as a Vulkan call index for which to mock a failure.
-
## Updating the Seed Corpus
Using a seed corpus significantly improves the efficiency of fuzzing. Dawn's fuzzers use interesting testcases discovered in previous fuzzing runs to seed future runs. Fuzzing can be further improved by using Dawn tests as a example of API usage which allows the fuzzer to quickly discover and use new API entrypoints and usage patterns.
-The script [update_fuzzer_seed_corpus.sh](../scripts/update_fuzzer_seed_corpus.sh) can be used to capture a trace while running Dawn tests, and upload it to the existing fuzzer seed corpus. It does the following steps:
-1. Builds the provided test and fuzzer targets.
-2. Runs the provided test target with `--use-wire --wire-trace-dir=tmp_dir1 [additional_test_args]` to dump traces of the tests.
-3. Generates one variant of each trace for every possible error index, by running the fuzzer target with `--injected-error-testcase-dir=tmp_dir2 ...`.
-4. Minimizes all testcases by running the fuzzer target with `-merge=1 tmp_dir3 tmp_dir1 tmp_dir2`.
+The script [update_fuzzer_seed_corpus.sh](../scripts/update_fuzzer_seed_corpus.sh) can be used to capture a trace while running Dawn tests, and upload it to the existing fuzzzer seed corpus.
To run the script:
-1. You must be in a Chromium checkout using the GN arg `use_libfuzzer=true`
-2. Run `./third_party/dawn/scripts/update_fuzzer_seed_corpus.sh <out_dir> <fuzzer> <test> [additional_test_args]`.
+1. Make sure gcloud is installed: https://g3doc.corp.google.com/cloud/sdk/g3doc/index.md?cl=head
+2. Login with @google.com credentials: `gcloud auth login`
+3. You must be in a Chromium checkout using the GN arg `use_libfuzzer=true`
+4. Run `./third_party/dawn/scripts/update_fuzzer_seed_corpus.sh <out_dir> <fuzzer> <test>`.
- Example: `./third_party/dawn/scripts/update_fuzzer_seed_corpus.sh out/fuzz dawn_wire_server_and_vulkan_backend_fuzzer dawn_end2end_tests --gtest_filter=*Vulkan`
-3. The script will print instructions for testing, and then uploading new inputs. Please, only upload inputs after testing the fuzzer with new inputs, and verifying there is a meaningful change in coverage. Uploading requires [gcloud](https://g3doc.corp.google.com/cloud/sdk/g3doc/index.md?cl=head) to be logged in with @google.com credentials: `gcloud auth login`.
+ Example: `./third_party/dawn/scripts/update_fuzzer_seed_corpus.sh out/fuzz dawn_wire_server_and_frontend_fuzzer dawn_end2end_tests`
+5. The script will print instructions for testing, and then uploading new inputs. Please, only upload inputs after testing the fuzzer with new inputs, and verifying there is a meaningful change in coverage.
diff --git a/scripts/update_fuzzer_seed_corpus.sh b/scripts/update_fuzzer_seed_corpus.sh
index 966c1d6..8438d6a 100755
--- a/scripts/update_fuzzer_seed_corpus.sh
+++ b/scripts/update_fuzzer_seed_corpus.sh
@@ -20,39 +20,29 @@
# Exit if anything fails
set -e
-if [ "$#" -lt 3 ]; then
+if [ "$#" -ne 3 ]; then
cat << EOF
Usage:
- $0 <out_dir> <fuzzer_name> <test_name> [additional_test_args...]
+ $0 <out_dir> <fuzzer_name> <test_name>
Example:
- $0 out/fuzz dawn_wire_server_and_vulkan_backend_fuzzer dawn_end2end_tests --gtest_filter=*Vulkan
+ $0 out/fuzz dawn_wire_server_and_frontend_fuzzer dawn_end2end_tests
EOF
exit 1
fi
-all_args=("$@")
out_dir=$1
fuzzer_name=$2
test_name=$3
-additional_test_args=("${all_args[@]:3}")
testcase_dir="/tmp/testcases/${fuzzer_name}/"
-injected_error_testcase_dir="/tmp/testcases/${fuzzer_name}_injected/"
minimized_testcase_dir="/tmp/testcases/${fuzzer_name}_minimized/"
-# Print commands so it's clear what is being executed
-set -x
-
# Make a directory for temporarily storing testcases
mkdir -p "$testcase_dir"
-# Make an empty directory for temporarily storing testcases with injected errors
-rm -rf "$injected_error_testcase_dir"
-mkdir -p "$injected_error_testcase_dir"
-
# Make an empty directory for temporarily storing minimized testcases
rm -rf "$minimized_testcase_dir"
mkdir -p "$minimized_testcase_dir"
@@ -64,16 +54,10 @@
test_binary="${out_dir}/${test_name}"
# Run the test binary
-$test_binary --use-wire --wire-trace-dir="$testcase_dir" $additional_test_args
+$test_binary --use-wire --wire-trace-dir="$testcase_dir"
-# Run the fuzzer over the testcases to inject errors
-$fuzzer_binary --injected-error-testcase-dir="$injected_error_testcase_dir" -runs=0 "$testcase_dir"
-
-# Run the fuzzer to minimize the testcases + injected errors
-$fuzzer_binary -merge=1 "$minimized_testcase_dir" "$injected_error_testcase_dir" "$testcase_dir"
-
-# Turn off command printing
-set +x
+# Run the fuzzer to minimize the corpus
+$fuzzer_binary -merge=1 "$minimized_testcase_dir" "$testcase_dir"
if [ -z "$(ls -A $minimized_testcase_dir)" ]; then
cat << EOF
diff --git a/src/dawn_native/ErrorInjector.cpp b/src/dawn_native/ErrorInjector.cpp
index 836ef1e..d821028 100644
--- a/src/dawn_native/ErrorInjector.cpp
+++ b/src/dawn_native/ErrorInjector.cpp
@@ -15,7 +15,6 @@
#include "dawn_native/ErrorInjector.h"
#include "common/Assert.h"
-#include "dawn_native/DawnNative.h"
namespace dawn_native {
diff --git a/src/dawn_native/ErrorInjector.h b/src/dawn_native/ErrorInjector.h
index 4d7d2b8..7fe3581 100644
--- a/src/dawn_native/ErrorInjector.h
+++ b/src/dawn_native/ErrorInjector.h
@@ -26,7 +26,12 @@
bool injected;
};
+ void EnableErrorInjector();
+ void DisableErrorInjector();
+ void ClearErrorInjector();
+
bool ErrorInjectorEnabled();
+ uint64_t AcquireErrorInjectorCallCount();
bool ShouldInjectError();
@@ -43,6 +48,8 @@
return MaybeInjectError(errorTypes...);
}
+ void InjectErrorAt(uint64_t index);
+
} // namespace dawn_native
#if defined(DAWN_ENABLE_ERROR_INJECTION)
diff --git a/src/fuzzers/DawnSPIRVCrossGLSLFastFuzzer.cpp b/src/fuzzers/DawnSPIRVCrossGLSLFastFuzzer.cpp
index 7a658e0..b3468eb 100644
--- a/src/fuzzers/DawnSPIRVCrossGLSLFastFuzzer.cpp
+++ b/src/fuzzers/DawnSPIRVCrossGLSLFastFuzzer.cpp
@@ -45,10 +45,6 @@
} // namespace
-extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv) {
- return 0;
-}
-
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
return DawnSPIRVCrossFuzzer::Run(data, size, GLSLFastFuzzTask);
}
diff --git a/src/fuzzers/DawnSPIRVCrossHLSLFastFuzzer.cpp b/src/fuzzers/DawnSPIRVCrossHLSLFastFuzzer.cpp
index e404be2..0566179 100644
--- a/src/fuzzers/DawnSPIRVCrossHLSLFastFuzzer.cpp
+++ b/src/fuzzers/DawnSPIRVCrossHLSLFastFuzzer.cpp
@@ -51,10 +51,6 @@
} // namespace
-extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv) {
- return 0;
-}
-
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
return DawnSPIRVCrossFuzzer::Run(data, size, FuzzTask);
}
diff --git a/src/fuzzers/DawnSPIRVCrossMSLFastFuzzer.cpp b/src/fuzzers/DawnSPIRVCrossMSLFastFuzzer.cpp
index e4ff964..5c4e689 100644
--- a/src/fuzzers/DawnSPIRVCrossMSLFastFuzzer.cpp
+++ b/src/fuzzers/DawnSPIRVCrossMSLFastFuzzer.cpp
@@ -44,10 +44,6 @@
} // namespace
-extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv) {
- return 0;
-}
-
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
return DawnSPIRVCrossFuzzer::Run(data, size, FuzzTask);
}
diff --git a/src/fuzzers/DawnSPVCglslFastFuzzer.cpp b/src/fuzzers/DawnSPVCglslFastFuzzer.cpp
index 6fbaf82..9a67c3c 100644
--- a/src/fuzzers/DawnSPVCglslFastFuzzer.cpp
+++ b/src/fuzzers/DawnSPVCglslFastFuzzer.cpp
@@ -18,10 +18,6 @@
#include "spvc/spvc.hpp"
-extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv) {
- return 0;
-}
-
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
shaderc_spvc::Context context;
if (!context.IsValid()) {
diff --git a/src/fuzzers/DawnSPVChlslFastFuzzer.cpp b/src/fuzzers/DawnSPVChlslFastFuzzer.cpp
index 540ac65..f59bd2c 100644
--- a/src/fuzzers/DawnSPVChlslFastFuzzer.cpp
+++ b/src/fuzzers/DawnSPVChlslFastFuzzer.cpp
@@ -18,10 +18,6 @@
#include "spvc/spvc.hpp"
-extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv) {
- return 0;
-}
-
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
shaderc_spvc::Context context;
if (!context.IsValid()) {
diff --git a/src/fuzzers/DawnSPVCmslFastFuzzer.cpp b/src/fuzzers/DawnSPVCmslFastFuzzer.cpp
index 70cb21e..331d924 100644
--- a/src/fuzzers/DawnSPVCmslFastFuzzer.cpp
+++ b/src/fuzzers/DawnSPVCmslFastFuzzer.cpp
@@ -18,10 +18,6 @@
#include "spvc/spvc.hpp"
-extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv) {
- return 0;
-}
-
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
shaderc_spvc::Context context;
if (!context.IsValid()) {
diff --git a/src/fuzzers/DawnWireServerAndFrontendFuzzer.cpp b/src/fuzzers/DawnWireServerAndFrontendFuzzer.cpp
index 66de766..7911738 100644
--- a/src/fuzzers/DawnWireServerAndFrontendFuzzer.cpp
+++ b/src/fuzzers/DawnWireServerAndFrontendFuzzer.cpp
@@ -17,28 +17,21 @@
#include "common/Assert.h"
#include "dawn_native/DawnNative.h"
-extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv) {
- return DawnWireServerFuzzer::Initialize(argc, argv);
-}
-
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
- return DawnWireServerFuzzer::Run(
- data, size,
- [](dawn_native::Instance* instance) {
- instance->DiscoverDefaultAdapters();
+ return DawnWireServerFuzzer::Run(data, size, [](dawn_native::Instance* instance) {
+ instance->DiscoverDefaultAdapters();
- std::vector<dawn_native::Adapter> adapters = instance->GetAdapters();
+ std::vector<dawn_native::Adapter> adapters = instance->GetAdapters();
- wgpu::Device nullDevice;
- for (dawn_native::Adapter adapter : adapters) {
- if (adapter.GetBackendType() == dawn_native::BackendType::Null) {
- nullDevice = wgpu::Device::Acquire(adapter.CreateDevice());
- break;
- }
+ wgpu::Device nullDevice;
+ for (dawn_native::Adapter adapter : adapters) {
+ if (adapter.GetBackendType() == dawn_native::BackendType::Null) {
+ nullDevice = wgpu::Device::Acquire(adapter.CreateDevice());
+ break;
}
+ }
- ASSERT(nullDevice.Get() != nullptr);
- return nullDevice;
- },
- false /* supportsErrorInjection */);
+ ASSERT(nullDevice.Get() != nullptr);
+ return nullDevice;
+ });
}
diff --git a/src/fuzzers/DawnWireServerAndVulkanBackendFuzzer.cpp b/src/fuzzers/DawnWireServerAndVulkanBackendFuzzer.cpp
index 266b756..ce39917 100644
--- a/src/fuzzers/DawnWireServerAndVulkanBackendFuzzer.cpp
+++ b/src/fuzzers/DawnWireServerAndVulkanBackendFuzzer.cpp
@@ -14,29 +14,25 @@
#include "DawnWireServerFuzzer.h"
+#include "common/Assert.h"
#include "dawn_native/DawnNative.h"
-extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv) {
- return DawnWireServerFuzzer::Initialize(argc, argv);
-}
-
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
- return DawnWireServerFuzzer::Run(
- data, size,
- [](dawn_native::Instance* instance) {
- instance->DiscoverDefaultAdapters();
+ return DawnWireServerFuzzer::Run(data, size, [](dawn_native::Instance* instance) {
+ instance->DiscoverDefaultAdapters();
- std::vector<dawn_native::Adapter> adapters = instance->GetAdapters();
+ std::vector<dawn_native::Adapter> adapters = instance->GetAdapters();
- wgpu::Device device;
- for (dawn_native::Adapter adapter : adapters) {
- if (adapter.GetBackendType() == dawn_native::BackendType::Vulkan &&
- adapter.GetDeviceType() == dawn_native::DeviceType::CPU) {
- device = wgpu::Device::Acquire(adapter.CreateDevice());
- break;
- }
+ wgpu::Device device;
+ for (dawn_native::Adapter adapter : adapters) {
+ if (adapter.GetBackendType() == dawn_native::BackendType::Vulkan &&
+ adapter.GetDeviceType() == dawn_native::DeviceType::CPU) {
+ device = wgpu::Device::Acquire(adapter.CreateDevice());
+ break;
}
- return device;
- },
- true /* supportsErrorInjection */);
+ }
+
+ ASSERT(device.Get() != nullptr);
+ return device;
+ });
}
diff --git a/src/fuzzers/DawnWireServerFuzzer.cpp b/src/fuzzers/DawnWireServerFuzzer.cpp
index 522e281..f7a19f1 100644
--- a/src/fuzzers/DawnWireServerFuzzer.cpp
+++ b/src/fuzzers/DawnWireServerFuzzer.cpp
@@ -15,14 +15,11 @@
#include "DawnWireServerFuzzer.h"
#include "common/Assert.h"
-#include "common/Log.h"
-#include "common/SystemUtils.h"
#include "dawn/dawn_proc.h"
#include "dawn/webgpu_cpp.h"
#include "dawn_native/DawnNative.h"
#include "dawn_wire/WireServer.h"
-#include <fstream>
#include <vector>
namespace {
@@ -45,9 +42,6 @@
WGPUProcDeviceCreateSwapChain sOriginalDeviceCreateSwapChain = nullptr;
- std::string sInjectedErrorTestcaseOutDir;
- uint64_t sOutputFileNumber = 0;
-
WGPUSwapChain ErrorDeviceCreateSwapChain(WGPUDevice device, const WGPUSwapChainDescriptor*) {
WGPUSwapChainDescriptor desc;
desc.nextInChain = nullptr;
@@ -59,61 +53,7 @@
} // namespace
-int DawnWireServerFuzzer::Initialize(int* argc, char*** argv) {
- ASSERT(argc != nullptr && argv != nullptr);
-
- // The first argument (the fuzzer binary) always stays the same.
- int argcOut = 1;
-
- for (int i = 1; i < *argc; ++i) {
- constexpr const char kInjectedErrorTestcaseDirArg[] = "--injected-error-testcase-dir=";
- if (strstr((*argv)[i], kInjectedErrorTestcaseDirArg) == (*argv)[i]) {
- sInjectedErrorTestcaseOutDir = (*argv)[i] + strlen(kInjectedErrorTestcaseDirArg);
- const char* sep = GetPathSeparator();
- if (sInjectedErrorTestcaseOutDir.back() != *sep) {
- sInjectedErrorTestcaseOutDir += sep;
- }
- // Log so that it's clear the fuzzer found the argument.
- dawn::InfoLog() << "Generating injected errors, output dir is: \""
- << sInjectedErrorTestcaseOutDir << "\"";
- continue;
- }
-
- // Move any unconsumed arguments to the next slot in the output array.
- (*argv)[argcOut++] = (*argv)[i];
- }
-
- // Write the argument count
- *argc = argcOut;
-
- return 0;
-}
-
-int DawnWireServerFuzzer::Run(const uint8_t* data,
- size_t size,
- MakeDeviceFn MakeDevice,
- bool supportsErrorInjection) {
- bool didInjectError = false;
-
- if (supportsErrorInjection) {
- dawn_native::EnableErrorInjector();
-
- // Clear the error injector since it has the previous run's call counts.
- dawn_native::ClearErrorInjector();
-
- // If we're outputing testcases with injected errors, we run the fuzzer on the original
- // input data, and prepend injected errors to it. In the case, where we're NOT outputing,
- // we use the first bytes as the injected error index.
- if (sInjectedErrorTestcaseOutDir.empty() && size >= sizeof(uint64_t)) {
- // Otherwise, use the first bytes as the injected error index.
- dawn_native::InjectErrorAt(*reinterpret_cast<const uint64_t*>(data));
- didInjectError = true;
-
- data += sizeof(uint64_t);
- size -= sizeof(uint64_t);
- }
- }
-
+int DawnWireServerFuzzer::Run(const uint8_t* data, size_t size, MakeDeviceFn MakeDevice) {
DawnProcTable procs = dawn_native::GetProcs();
// Swapchains receive a pointer to an implementation. The fuzzer will pass garbage in so we
@@ -127,11 +67,7 @@
std::unique_ptr<dawn_native::Instance> instance = std::make_unique<dawn_native::Instance>();
wgpu::Device device = MakeDevice(instance.get());
- if (!device) {
- // We should only ever fail device creation if an error was injected.
- ASSERT(didInjectError);
- return 0;
- }
+ ASSERT(device);
DevNull devNull;
dawn_wire::WireServerDescriptor serverDesc = {};
@@ -151,27 +87,5 @@
device = nullptr;
instance = nullptr;
- // If we support error injection, and an output directory was provided, output copies of the
- // original testcase data, prepended with the injected error index.
- if (supportsErrorInjection && !sInjectedErrorTestcaseOutDir.empty()) {
- const uint64_t injectedCallCount = dawn_native::AcquireErrorInjectorCallCount();
-
- auto WriteTestcase = [&](uint64_t i) {
- std::ofstream outFile(
- sInjectedErrorTestcaseOutDir + "injected_error_testcase_" +
- std::to_string(sOutputFileNumber++),
- std::ios_base::out | std::ios_base::binary | std::ios_base::trunc);
- outFile.write(reinterpret_cast<const char*>(&i), sizeof(i));
- outFile.write(reinterpret_cast<const char*>(data), size);
- };
-
- for (uint64_t i = 0; i < injectedCallCount; ++i) {
- WriteTestcase(i);
- }
-
- // Also add a testcase where the injected error is so large no errors should occur.
- WriteTestcase(std::numeric_limits<uint64_t>::max());
- }
-
return 0;
}
diff --git a/src/fuzzers/DawnWireServerFuzzer.h b/src/fuzzers/DawnWireServerFuzzer.h
index c2e1767..b4c011e 100644
--- a/src/fuzzers/DawnWireServerFuzzer.h
+++ b/src/fuzzers/DawnWireServerFuzzer.h
@@ -27,8 +27,6 @@
using MakeDeviceFn = std::function<wgpu::Device(dawn_native::Instance*)>;
- int Initialize(int* argc, char*** argv);
-
- int Run(const uint8_t* data, size_t size, MakeDeviceFn MakeDevice, bool supportsErrorInjection);
+ int Run(const uint8_t* data, size_t size, MakeDeviceFn MakeDevice);
} // namespace DawnWireServerFuzzer
diff --git a/src/fuzzers/StandaloneFuzzerMain.cpp b/src/fuzzers/StandaloneFuzzerMain.cpp
index 3341199..9755e1d 100644
--- a/src/fuzzers/StandaloneFuzzerMain.cpp
+++ b/src/fuzzers/StandaloneFuzzerMain.cpp
@@ -17,17 +17,11 @@
#include <iostream>
#include <vector>
-extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv);
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);
int main(int argc, char** argv) {
- if (LLVMFuzzerInitialize(&argc, &argv)) {
- std::cerr << "Failed to initialize fuzzer target" << std::endl;
- return 1;
- }
-
if (argc != 2) {
- std::cout << "Usage: <standalone reproducer> [options] FILE" << std::endl;
+ std::cout << "Usage: <standalone reproducer> FILE" << std::endl;
return 1;
}
diff --git a/src/include/dawn_native/DawnNative.h b/src/include/dawn_native/DawnNative.h
index a7e8d6c..61fc0c0 100644
--- a/src/include/dawn_native/DawnNative.h
+++ b/src/include/dawn_native/DawnNative.h
@@ -161,14 +161,6 @@
// Backdoor to get the order of the ProcMap for testing
DAWN_NATIVE_EXPORT std::vector<const char*> GetProcMapNamesForTesting();
-
- // ErrorInjector functions used for testing only. Defined in dawn_native/ErrorInjector.cpp
- DAWN_NATIVE_EXPORT void EnableErrorInjector();
- DAWN_NATIVE_EXPORT void DisableErrorInjector();
- DAWN_NATIVE_EXPORT void ClearErrorInjector();
- DAWN_NATIVE_EXPORT uint64_t AcquireErrorInjectorCallCount();
- DAWN_NATIVE_EXPORT void InjectErrorAt(uint64_t index);
-
} // namespace dawn_native
#endif // DAWNNATIVE_DAWNNATIVE_H_
