diff --git a/.github/workflows/wide_decimal.yml b/.github/workflows/wide_decimal.yml
index 3321e625..6255febd 100644
--- a/.github/workflows/wide_decimal.yml
+++ b/.github/workflows/wide_decimal.yml
@@ -66,7 +66,7 @@ jobs:
         with:
           fetch-depth: '0'
       - name: update-tools
-        run: sudo apt install clang clang-tidy
+        run: sudo apt install clang-tidy
       - name: clone-submods-bootstrap-headers-boost-develop
         run: |
           git clone -b develop --depth 1 https://github.com/boostorg/boost.git ../boost-root
@@ -610,6 +610,8 @@ jobs:
           mkdir bin
           echo ${{ steps.upcase_my_example.outputs.uppercase }}
           echo 'compile examples/${{ matrix.example }}.cpp with:'
+          echo 'query arm-none-eabi-g++ version'
+          arm-none-eabi-g++ -v
           echo 'arm-none-eabi-g++ -x c++ -std=${{ matrix.standard }} -Os -Werror -Wall -Wextra -Wpedantic -Wpedantic -Wmain -Wconversion -Wsign-conversion -Wunused-parameter -Wuninitialized -Wmissing-declarations -Wshadow -Wunreachable-code -Wswitch-default -Wswitch-enum -Wcast-align -Wmissing-include-dirs -Winit-self -Wfloat-equal -Wdouble-promotion -Wno-psabi -mcpu=cortex-m4 -mtune=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -ffast-math -mno-unaligned-access -mno-long-calls -finline-functions -finline-limit=32 -g -gdwarf-2 -fno-exceptions -ffunction-sections -fdata-sections -fno-rtti -fno-use-cxa-atexit -fno-exceptions -fno-threadsafe-statics -fno-enforce-eh-specs -ftemplate-depth=32 -Wzero-as-null-pointer-constant -I. -DWIDE_DECIMAL_STANDALONE_${{ steps.upcase_my_example.outputs.uppercase }} examples/${{ matrix.example }}.cpp -Wl,--gc-sections -Wl,-Map,./bin/${{ matrix.example }}.map --specs=nano.specs --specs=nosys.specs -o bin/${{ matrix.example }}.elf'
           arm-none-eabi-g++ -x c++ -std=${{ matrix.standard }} -Os -Werror -Wall -Wextra -Wpedantic -Wpedantic -Wmain -Wconversion -Wsign-conversion -Wunused-parameter -Wuninitialized -Wmissing-declarations -Wshadow -Wunreachable-code -Wswitch-default -Wswitch-enum -Wcast-align -Wmissing-include-dirs -Winit-self -Wfloat-equal -Wdouble-promotion -Wno-psabi -mcpu=cortex-m4 -mtune=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -ffast-math -mno-unaligned-access -mno-long-calls -finline-functions -finline-limit=32 -g -gdwarf-2 -fno-exceptions -ffunction-sections -fdata-sections -fno-rtti -fno-use-cxa-atexit -fno-exceptions -fno-threadsafe-statics -fno-enforce-eh-specs -ftemplate-depth=32 -Wzero-as-null-pointer-constant -I. -DWIDE_DECIMAL_STANDALONE_${{ steps.upcase_my_example.outputs.uppercase }} examples/${{ matrix.example }}.cpp -Wl,--gc-sections -Wl,-Map,./bin/${{ matrix.example }}.map --specs=nano.specs --specs=nosys.specs -o bin/${{ matrix.example }}.elf
           echo
@@ -648,6 +650,8 @@ jobs:
         run: |
           mkdir bin
           echo ${{ steps.upcase_my_example.outputs.uppercase }}
+          echo 'query avr-gcc version'
+          avr-g++ -v
           echo 'compile examples/${{ matrix.example }}.cpp with:'
           echo 'avr-g++ -x c++ -std=${{ matrix.standard }} -Os -Werror -Wall -Wextra -Wpedantic -Wpedantic -Wmain -Wconversion -Wsign-conversion -Wunused-parameter -Wuninitialized -Wmissing-declarations -Wshadow -Wunreachable-code -Wswitch-default -Wswitch-enum -Wcast-align -Wmissing-include-dirs -Winit-self -Wfloat-equal -Wdouble-promotion -mmcu=atmega328p -mrelax -finline-functions -finline-limit=32 -fsigned-char -g -gdwarf-2 -fno-exceptions -ffunction-sections -fdata-sections -fno-rtti -fno-use-cxa-atexit -fno-exceptions -fno-threadsafe-statics -fno-enforce-eh-specs -ftemplate-depth=32 -Wzero-as-null-pointer-constant -I. -I../real-time-cpp-root/ref_app/src -I../real-time-cpp-root/ref_app/src/util/STL -DWIDE_DECIMAL_STANDALONE_${{ steps.upcase_my_example.outputs.uppercase }} examples/${{ matrix.example }}.cpp util/stdcpp/stdcpp_patch.cpp -Wl,--gc-sections -Wl,-Map,./bin/${{ matrix.example }}.map -o bin/${{ matrix.example }}.elf'
           avr-g++ -x c++ -std=${{ matrix.standard }} -Os -Werror -Wall -Wextra -Wpedantic -Wpedantic -Wmain -Wconversion -Wsign-conversion -Wunused-parameter -Wuninitialized -Wmissing-declarations -Wshadow -Wunreachable-code -Wswitch-default -Wswitch-enum -Wcast-align -Wmissing-include-dirs -Winit-self -Wfloat-equal -Wdouble-promotion -mmcu=atmega328p -mrelax -finline-functions -finline-limit=32 -fsigned-char -g -gdwarf-2 -fno-exceptions -ffunction-sections -fdata-sections -fno-rtti -fno-use-cxa-atexit -fno-exceptions -fno-threadsafe-statics -fno-enforce-eh-specs -ftemplate-depth=32 -Wzero-as-null-pointer-constant -I. -I../real-time-cpp-root/ref_app/src -I../real-time-cpp-root/ref_app/src/util/STL -DWIDE_DECIMAL_STANDALONE_${{ steps.upcase_my_example.outputs.uppercase }} examples/${{ matrix.example }}.cpp util/stdcpp/stdcpp_patch.cpp -Wl,--gc-sections -Wl,-Map,./bin/${{ matrix.example }}.map -o bin/${{ matrix.example }}.elf