Bump g++ minimum supported version to 10

Also, enable -Werror=maybe-uninitialized in
ci/test/00_setup_env_native_qt5.sh

ci/test/00_setup_env_native_qt5.sh

@@ -8,14 +8,13 @@ export LC_ALL=C.UTF-8
 
 export CONTAINER_NAME=ci_native_qt5
 export CI_IMAGE_NAME_TAG="docker.io/debian:bullseye"
-# Use minimum supported python3.9 and gcc-9, see doc/dependencies.md
-export PACKAGES="gcc-9 g++-9 python3-zmq qtbase5-dev qttools5-dev-tools libdbus-1-dev libharfbuzz-dev"
-export DEP_OPTS="NO_QT=1 NO_UPNP=1 NO_NATPMP=1 DEBUG=1 ALLOW_HOST_PACKAGES=1 CC=gcc-9 CXX=g++-9"
+# Use minimum supported python3.9 and gcc-10, see doc/dependencies.md
+export PACKAGES="gcc-10 g++-10 python3-zmq qtbase5-dev qttools5-dev-tools libdbus-1-dev libharfbuzz-dev"
+export DEP_OPTS="NO_QT=1 NO_UPNP=1 NO_NATPMP=1 DEBUG=1 ALLOW_HOST_PACKAGES=1 CC=gcc-10 CXX=g++-10"
 export TEST_RUNNER_EXTRA="--previous-releases --coverage --extended --exclude feature_dbcrash"  # Run extended tests so that coverage does not fail, but exclude the very slow dbcrash
 export RUN_UNIT_TESTS_SEQUENTIAL="true"
 export RUN_UNIT_TESTS="false"
 export GOAL="install"
-export NO_WERROR=1  # -Werror=maybe-uninitialized
 export DOWNLOAD_PREVIOUS_RELEASES="true"
 export BITCOIN_CONFIG="--enable-zmq --with-libs=no --with-gui=qt5 --enable-reduce-exports --enable-debug \
 CFLAGS=\"-g0 -O2 -funsigned-char\" CPPFLAGS='-DBOOST_MULTI_INDEX_ENABLE_SAFE_MODE' CXXFLAGS=\"-g0 -O2 -funsigned-char\""

doc/dependencies.md

@@ -9,7 +9,7 @@ You can find installation instructions in the `build-*.md` file for your platfor
 | [Autoconf](https://www.gnu.org/software/autoconf/) | [2.69](https://github.com/bitcoin/bitcoin/pull/17769) |
 | [Automake](https://www.gnu.org/software/automake/) | [1.13](https://github.com/bitcoin/bitcoin/pull/18290) |
 | [Clang](https://clang.llvm.org) | [13.0](https://github.com/bitcoin/bitcoin/pull/28210) |
-| [GCC](https://gcc.gnu.org) | [9.1](https://github.com/bitcoin/bitcoin/pull/27662) |
+| [GCC](https://gcc.gnu.org) | [10.1](https://github.com/bitcoin/bitcoin/pull/28348) |
 | [Python](https://www.python.org) (scripts, tests) | [3.9](https://github.com/bitcoin/bitcoin/pull/28211) |
 | [systemtap](https://sourceware.org/systemtap/) ([tracing](tracing.md))| N/A |
 

src/util/hasher.h

@@ -45,7 +45,7 @@ public:
      * a slight performance penalty (around 1.6%), but this is compensated by
      * memory savings of about 9% which allow for a larger dbcache setting.
      *
-     * @see https://gcc.gnu.org/onlinedocs/gcc-9.2.0/libstdc++/manual/manual/unordered_associative.html
+     * @see https://gcc.gnu.org/onlinedocs/gcc-13.2.0/libstdc++/manual/manual/unordered_associative.html
      */
     size_t operator()(const COutPoint& id) const noexcept {
         return SipHashUint256Extra(k0, k1, id.hash, id.n);