test: Add PVS studio docker run.

Can't run this on github, yet. I'll add the license key later and run it
as post-submit.

other/docker/pvs/pvs.Dockerfile

@@ -0,0 +1,56 @@
+FROM ubuntu:22.04
+
+RUN apt-get update && \
+ DEBIAN_FRONTEND="noninteractive" apt-get install -y --no-install-recommends \
+ ca-certificates \
+ cmake \
+ curl \
+ gcc \
+ g++ \
+ libconfig-dev \
+ libopus-dev \
+ libsodium-dev \
+ libvpx-dev \
+ ninja-build \
+ strace \
+ && apt-get clean \
+ && rm -rf /var/lib/apt/lists/*
+
+RUN curl -o pvs-studio.deb https://cdn.pvs-studio.com/pvs-studio-7.29.79138.387-amd64.deb \
+ && dpkg -i pvs-studio.deb \
+ && rm pvs-studio.deb
+ARG LICENSE_USER="[email protected]" LICENSE_KEY=""
+RUN pvs-studio-analyzer credentials "$LICENSE_USER" "$LICENSE_KEY"
+
+WORKDIR /work/c-toxcore
+COPY . /work/c-toxcore/
+
+RUN cmake . -B_build -GNinja -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DENABLE_SHARED=OFF
+
+# MISRA
+RUN echo 'analysis-mode=32' > pvs.cfg
+RUN pvs-studio-analyzer analyze --cfg pvs.cfg -f _build/compile_commands.json -j"$(nproc)" -o misra.log
+
+# General Analysis
+RUN echo 'analysis-mode=0' > pvs.cfg
+RUN pvs-studio-analyzer analyze --cfg pvs.cfg -f _build/compile_commands.json -j"$(nproc)" -o pvs.log
+
+# Show MISRA errors
+RUN plog-converter \
+  -E "other;testing;toxav;third_party" \
+  -d "V2501,V2511,V2514,V2516,V2519,V2520,V2537,V2547,V2568,V2571,V2572,V2575,V2578,V2594,V2611,V2614,V2620" \
+  -a "MISRA:1,2" \
+  -t "tasklist" \
+  -o "misra.tasks" \
+  "misra.log"
+RUN cat misra.tasks
+
+# Show MISRA errors
+RUN plog-converter \
+  -E "other;testing;toxav;third_party" \
+  -d "V501,V547,V641,V802,V1037,V1042,V1051,V1086" \
+  -a "GA:1,2,3;OP:1,2,3" \
+  -t "tasklist" \
+  -o "pvs.tasks" \
+  "pvs.log"
+RUN cat pvs.tasks

other/docker/pvs/pvs.Dockerfile.dockerignore

@@ -0,0 +1,23 @@
+# ===== common =====
+# Ignore everything ...
+**/*
+# ... except sources
+!**/*.[ch]
+!**/*.cc
+!**/*.hh
+!CHANGELOG.md
+!LICENSE
+!README.md
+!auto_tests/data/*
+!other/bootstrap_daemon/bash-completion/**
+!other/bootstrap_daemon/tox-bootstrapd.*
+!other/proxy/*.mod
+!other/proxy/*.sum
+!other/proxy/*.go
+# ... and CMake build files (used by most builds).
+!**/CMakeLists.txt
+!.github/scripts/flags*.sh
+!cmake/*.cmake
+!other/pkgconfig/*
+!other/rpm/*
+!so.version

other/docker/pvs/run

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+DOCKERFLAGS=("--build-arg" "LICENSE_KEY=$(echo -n "$(cat $HOME/.pvs-license)")")
+. "$(cd "$(dirname "${BASH_SOURCE[0]}")/../sources" && pwd)/run.sh"

toxcore/crypto_core_test_util.cc

@@ -13,7 +13,7 @@ Random_Funcs const Random_Class::vtable = {
 
 Random_Class::~Random_Class() = default;
 
-void Test_Random::random_bytes(void *obj, uint8_t *bytes, size_t length)
+void Test_Random::random_bytes(void *obj, uint8_t bytes[], size_t length)
 {
     std::generate(bytes, &bytes[length], std::ref(lcg));
 }
@@ -35,7 +35,7 @@ std::ostream &operator<<(std::ostream &out, PublicKey const &pk)
 {
     out << '"';
     for (uint8_t byte : pk) {
-        out << std::setw(2) << std::setfill('0') << std::hex << uint32_t(byte);
+        out << std::setw(2) << std::setfill('0') << std::hex << static_cast<uint32_t>(byte);
     }
     out << '"';
     return out;

toxcore/test_util.hh

@@ -37,7 +37,7 @@ template <typename T, std::size_t N>
 std::array<T, N> to_array(T const (&arr)[N])
 {
     std::array<T, N> stdarr;
-    std::copy(arr, arr + N, stdarr.begin());
+    std::copy(arr, &arr[N], stdarr.begin());
     return stdarr;
 }