Added cppcheck workflow

.github/workflows/cppcheck.yml

@@ -0,0 +1,26 @@
+name: C/C++ CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  cppcheck-ubuntu:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Install cppcheck
+      run: sudo apt update && sudo apt install cppcheck
+
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      with:
+        submodules: true
+
+    - name: Run cppcheck
+      run: |
+        cd cppcheck
+        ./run.sh

cppcheck/run.sh

@@ -1,3 +1,7 @@
 #!/bin/bash
 cppcheck ../src -DZMQ_STATIC --platform=unix64 --std=c++14 --enable=all --inconclusive --inline-suppr --template="{file}:{line}:{id}{inconclusive: INCONCLUSIVE} {message}" -I ../src/ -I ../external/src/ -I ../external/src/cryptonote/ -I ../external/src/libuv/ -I ../external/src/cppzmq/ -I ../external/src/libzmq/ -I ../external/src/llhttp/ -I ../external/src/randomx/src/ --suppressions-list=suppressions.txt --output-file=errors_full.txt
-grep -v 'external' errors_full.txt > errors_filtered.txt
+grep -v 'external' errors_full.txt | grep -v 'unmatchedSuppression' > errors_filtered.txt
+if [ -s errors_filtered.txt ]; then
+	cat errors_filtered.txt
+	exit 1
+fi

src/crypto.cpp

@@ -75,6 +75,7 @@ static FORCEINLINE bool less32(const uint8_t* k0, const uint8_t* k1)
 	return false;
 }
 
+// cppcheck-suppress constParameter
 void generate_keys(hash& pub, hash& sec)
 {
 	// l = 2^252 + 27742317777372353535851937790883648493.
@@ -152,6 +153,7 @@ static FORCEINLINE void derivation_to_scalar(const hash& derivation, size_t outp
 	hash_to_scalar(begin, end - begin, res);
 }
 
+// cppcheck-suppress constParameter
 bool derive_public_key(const hash& derivation, size_t output_index, const hash& base, hash& derived_key)
 {
 	uint8_t scalar[HASH_SIZE];

src/log.cpp

@@ -240,6 +240,7 @@ static Worker worker;
 
 #endif // P2POOL_LOG_DISABLE
 
+// cppcheck-suppress uninitMemberVar
 NOINLINE Writer::Writer(Severity severity) : Stream(m_stackBuf)
 {
 	m_buf[0] = static_cast<char>(severity);

src/p2pool_api.cpp

@@ -129,6 +129,7 @@ void p2pool_api::dump_to_file()
 	}
 
 	for (auto& it : data) {
+		// cppcheck-suppress uninitvar
 		DumpFileWork* work = new DumpFileWork{ {}, {}, {}, it.first, std::move(it.second) };
 		work->open_req.data = work;
 		work->write_req.data = work;

src/pow_hash.cpp

@@ -164,6 +164,7 @@ void RandomX_Hasher::set_seed(const hash& seed)
 	}
 
 	{
+		// cppcheck-suppress unreadVariable
 		ON_SCOPE_LEAVE([this]() { uv_rwlock_wrunlock(&m_cacheLock); });
 
 		if (m_stopped.load()) {
@@ -296,6 +297,7 @@ bool RandomX_Hasher::calculate(const void* data, size_t size, const hash& seed,
 {
 	// First try to use the dataset if it's ready
 	if (uv_rwlock_tryrdlock(&m_datasetLock) == 0) {
+		// cppcheck-suppress unreadVariable
 		ON_SCOPE_LEAVE([this]() { uv_rwlock_rdunlock(&m_datasetLock); });
 
 		if (m_stopped.load()) {