[Bug] `UTILITY` targets with source files can interfere with cpptools `includePath` generation when Build Target is `all`

[malsyned]

Brief Issue Summary

Some UTILITY targets, such as the ones created by Doxygen.cmake, have a list of sources attached. If one of these targets happens to be placed at index [0] in the list of configurations passed to CppConfigurationProvider.updateFileGroup() by updateConfigurationData(), then provideConfigurations() for those sources will provide incomplete configurations for those sources.

This is because such a UTILITY target breaks the assumption articulated in this comment in getConfiguration():

return configurations?.values().next().value; // Any value is fine if the target doesn't match

CMake Tools Diagnostics

// With "all" selected as Build Target:
{
  "os": "linux",
  "vscodeVersion": "1.99.2",
  "cmtVersion": "1.13.0",
  "configurations": [
    {
      "folder": "/home/malsyned/work/preferred/fsg/preferred-fsg",
      "cmakeVersion": "4.0.0",
      "configured": true,
      "generator": "Unix Makefiles",
      "usesPresets": true,
      "compilers": {
        "C": "/home/malsyned/packages/LLVM-ET-Arm-19.1.5-Linux-x86_64/bin/clang",
        "CXX": "/home/malsyned/packages/LLVM-ET-Arm-19.1.5-Linux-x86_64/bin/clang++"
      }
    }
  ],
  "cpptoolsIntegration": {
    "isReady": true,
    "hasCodeModel": true,
    "activeBuildType": "Debug",
    "buildTypesSeen": [
      "Debug"
    ],
    "requests": [
      "file:///home/malsyned/work/preferred/fsg/preferred-fsg/src/main.c"
    ],
    "responses": [
      {
        "uri": "file:///home/malsyned/work/preferred/fsg/preferred-fsg/src/main.c",
        "configuration": {
          "includePath": [],
          "defines": [],
          "compilerPath": "/home/malsyned/packages/LLVM-ET-Arm-19.1.5-Linux-x86_64/bin/clang++",
          "compilerArgs": [],
          "compilerFragments": [
            "--target=arm-none-eabi"
          ]
        }
      }
    ],
    "partialMatches": [],
    "targetCount": 44,
    "executablesCount": 2,
    "librariesCount": 12,
    "targets": []
  },
  "settings": [
    {
      "communicationMode": "automatic",
      "useCMakePresets": "auto",
      "configureOnOpen": true
    }
  ]
}

// With a valid executable selected as Build Target
{
  "os": "linux",
  "vscodeVersion": "1.99.2",
  "cmtVersion": "1.13.0",
  "configurations": [
    {
      "folder": "/home/malsyned/work/preferred/fsg/preferred-fsg",
      "cmakeVersion": "4.0.0",
      "configured": true,
      "generator": "Unix Makefiles",
      "usesPresets": true,
      "compilers": {
        "C": "/home/malsyned/packages/LLVM-ET-Arm-19.1.5-Linux-x86_64/bin/clang",
        "CXX": "/home/malsyned/packages/LLVM-ET-Arm-19.1.5-Linux-x86_64/bin/clang++"
      }
    }
  ],
  "cpptoolsIntegration": {
    "isReady": true,
    "hasCodeModel": true,
    "activeBuildType": "Debug",
    "buildTypesSeen": [
      "Debug"
    ],
    "requests": [
      "file:///home/malsyned/work/preferred/fsg/preferred-fsg/src/main.c"
    ],
    "responses": [
      {
        "uri": "file:///home/malsyned/work/preferred/fsg/preferred-fsg/src/main.c",
        "configuration": {
          "includePath": [
            "/home/malsyned/work/preferred/fsg/preferred-fsg/src/app",
            "/home/malsyned/work/preferred/fsg/preferred-fsg/build/arm-debug/_deps/freertos-kernel-src/include",
            "/home/malsyned/work/preferred/fsg/preferred-fsg/src/arm/ti/rm44l520pge/openrtos",
            "/home/malsyned/work/preferred/fsg/preferred-fsg/src/arm/ti/rm44l520pge/halcogen",
            "/home/malsyned/work/preferred/fsg/preferred-fsg/src/arm/ti/rm44l520pge/halcogen/include",
            "/home/malsyned/work/preferred/fsg/preferred-fsg/build/arm-debug/src/arm/ti/rm44l520pge/openrtos/Source_Code/OpenRTOS/kernel/portable/GCC/Hercules",
            "/home/malsyned/work/preferred/fsg/preferred-fsg/src/arm",
            "/home/malsyned/work/preferred/fsg/preferred-fsg/build/arm-debug/_deps/rtt-src/RTT",
            "/home/malsyned/work/preferred/fsg/preferred-fsg/src/arm/ti/rm44l520pge"
          ],
          "defines": [
            "DEBUG"
          ],
          "compilerPath": "/home/malsyned/packages/LLVM-ET-Arm-19.1.5-Linux-x86_64/bin/clang",
          "compilerArgs": [],
          "compilerFragments": [
            "-mcpu=cortex-r4f -mfpu=vfpv3-d16 -mfloat-abi=hard -fno-strict-aliasing -fdata-sections -ffunction-sections -g",
            "-g3",
            "-fdebug-macro",
            "--target=arm-none-eabi"
          ]
        }
      }
    ],
    "partialMatches": [],
    "targetCount": 44,
    "executablesCount": 2,
    "librariesCount": 12,
    "targets": []
  },
  "settings": [
    {
      "communicationMode": "automatic",
      "useCMakePresets": "auto",
      "configureOnOpen": true
    }
  ]
}

Debug Log

[main] Configuring project: preferred-fsg 
[main] Saving open files before configure/build
[driver] Removing /home/malsyned/work/preferred/fsg/preferred-fsg/build/arm-debug/CMakeCache.txt
[driver] Removing /home/malsyned/work/preferred/fsg/preferred-fsg/build/arm-debug/CMakeFiles
[driver] Start configure 
[driver] Running pre-configure checks and steps
[cmakefileapi-driver] Configuring using preset
[cmakefileapi-driver] Invoking CMake /usr/bin/cmake with arguments ["-DARM_CPU=cortex-r4f","-DARM_FPU=vfpv3-d16","-DARM_FLOAT_ABI=hard","-DCMAKE_EXPORT_COMPILE_COMMANDS=1","-DCPPUTEST_TESTS_DETAILED=1","-DCMAKE_BUILD_TYPE=Debug","-DCMAKE_TOOLCHAIN_FILE=cmake/llvm-et-arm.cmake","-S","/home/malsyned/work/preferred/fsg/preferred-fsg","-B","/home/malsyned/work/preferred/fsg/preferred-fsg/build/arm-debug"]
[proc] Executing command: /usr/bin/cmake -DARM_CPU=cortex-r4f -DARM_FPU=vfpv3-d16 -DARM_FLOAT_ABI=hard -DCMAKE_EXPORT_COMPILE_COMMANDS=1 -DCPPUTEST_TESTS_DETAILED=1 -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=cmake/llvm-et-arm.cmake -S /home/malsyned/work/preferred/fsg/preferred-fsg -B /home/malsyned/work/preferred/fsg/preferred-fsg/build/arm-debug
[proc]   with environment: {"CASROOT":"/usr","CHROME_DESKTOP":"code.desktop","CINNAMON_VERSION":"6.4.9","CMT_DEVRUN":"1","CSF_DrawPluginDefaults":"/usr/share/opencascade/resources/DrawResources","CSF_EXCEPTION_PROMPT":"1","CSF_IGESDefaults":"/usr/share/opencascade/resources/XSTEPResource","CSF_LANGUAGE":"us","CSF_MDTVTexturesDirectory":"/usr/share/opencascade/resources/Textures","CSF_MIGRATION_TYPES":"/usr/share/opencascade/resources/StdResource/MigrationSheet.txt","CSF_OCCTResourcePath":"/usr/share/opencascade/resources","CSF_PluginDefaults":"/usr/share/opencascade/resources/StdResource","CSF_SHMessage":"/usr/share/opencascade/resources/SHMessage","CSF_STEPDefaults":"/usr/share/opencascade/resources/XSTEPResource","CSF_ShadersDirectory":"/usr/share/opencascade/resources/Shaders","CSF_StandardDefaults":"/usr/share/opencascade/resources/StdResource","CSF_StandardLiteDefaults":"/usr/share/opencascade/resources/StdResource","CSF_TObjDefaults":"/usr/share/opencascade/resources/StdResource","CSF_TObjMessage":"/usr/share/opencascade/resources/TObj","CSF_XCAFDefaults":"/usr/share/opencascade/resources/StdResource","CSF_XSMessage":"/usr/share/opencascade/resources/XSMessage","CSF_XmlOcafResource":"/usr/share/opencascade/resources/XmlOcafResource","DBUS_SESSION_BUS_ADDRESS":"unix:path=/run/user/1000/bus","DEBUGINFOD_URLS":"https://debuginfod.archlinux.org ","DESKTOP_SESSION":"cinnamon","DISPLAY":":0","DRAWDEFAULT":"/usr/share/opencascade/resources/DrawResources/DrawDefault","DRAWHOME":"/usr/share/opencascade/resources/DrawResources","EDITOR":"/usr/bin/nano","ELECTRON_NO_ATTACH_CONSOLE":"1","GDK_BACKEND":"x11","GDMSESSION":"cinnamon","GIO_LAUNCHED_DESKTOP_FILE":"/usr/share/applications/code.desktop","GIO_LAUNCHED_DESKTOP_FILE_PID":"14652","GJS_DEBUG_OUTPUT":"stderr","GJS_DEBUG_TOPICS":"JS ERROR;JS LOG","GNOME_DESKTOP_SESSION_ID":"this-is-deprecated","GTK2_RC_FILES":"/home/malsyned/.gtkrc-2.0","GTK3_MODULES":"xapp-gtk3-module","GTK_MODULES":"canberra-gtk-module","HG":"/usr/bin/hg","HOME":"/home/malsyned","LANG":"en_US.UTF-8","LC_ADDRESS":"en_US.UTF-8","LC_IDENTIFICATION":"en_US.UTF-8","LC_MEASUREMENT":"en_US.UTF-8","LC_MONETARY":"en_US.UTF-8","LC_NAME":"en_US.UTF-8","LC_NUMERIC":"en_US.UTF-8","LC_PAPER":"en_US.UTF-8","LC_TELEPHONE":"en_US.UTF-8","LC_TIME":"en_US.UTF-8","LESSOPEN":"|/usr/bin/lesspipe.sh %s","LIBVA_DRIVER_NAME":"nvidia","LLVM_ET_ARM_PATH":"/home/malsyned/packages/LLVM-ET-Arm-19.1.5-Linux-x86_64","LOGNAME":"malsyned","MAIL":"/var/spool/mail/malsyned","MMGT_CLEAR":"1","MOTD_SHOWN":"pam","NO_AT_BRIDGE":"1","ORIGINAL_XDG_CURRENT_DESKTOP":"X-Cinnamon","PATH":"/home/malsyned/.local/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/lib/jvm/default/bin:/opt/microchip/xc16/v2.10/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl:/var/lib/snapd/snap/bin","PWD":"/home/malsyned","PYTHONSTARTUP":"/home/malsyned/.pythonrc","QT_QPA_PLATFORMTHEME":"qt5ct","SAL_USE_VCLPLUGIN":"gtk","SESSION_MANAGER":"local/malsyned:@/tmp/.ICE-unix/3848,unix/malsyned:/tmp/.ICE-unix/3848","SHELL":"/bin/bash","SHLVL":"1","USER":"malsyned","VSCODE_CLI":"1","VSCODE_CRASH_REPORTER_PROCESS_TYPE":"extensionHost","VSCODE_CWD":"/home/malsyned","VSCODE_ESM_ENTRYPOINT":"vs/workbench/api/node/extensionHostProcess","VSCODE_HANDLES_UNCAUGHT_ERRORS":"true","VSCODE_IPC_HOOK":"/run/user/1000/vscode-f2c9b164-1.99-main.sock","VSCODE_NLS_CONFIG":"{\"userLocale\":\"en-us\",\"osLocale\":\"en-us\",\"resolvedLanguage\":\"en\",\"defaultMessagesFile\":\"/opt/visual-studio-code/resources/app/out/nls.messages.json\",\"locale\":\"en-us\",\"availableLanguages\":{}}","VSCODE_PID":"14670","XAUTHORITY":"/home/malsyned/.Xauthority","XC16_TOOLCHAIN_ROOT":"/opt/microchip/xc16/v2.10","XDG_CURRENT_DESKTOP":"X-Cinnamon","XDG_DATA_DIRS":"/home/malsyned/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share:/usr/share:/var/lib/snapd/desktop","XDG_GREETER_DATA_DIR":"/var/lib/lightdm-data/malsyned","XDG_RUNTIME_DIR":"/run/user/1000","XDG_SEAT":"seat0","XDG_SEAT_PATH":"/org/freedesktop/DisplayManager/Seat0","XDG_SESSION_CLASS":"user","XDG_SESSION_DESKTOP":"cinnamon","XDG_SESSION_ID":"2","XDG_SESSION_PATH":"/org/freedesktop/DisplayManager/Session0","XDG_SESSION_TYPE":"x11","XDG_VTNR":"7","_":"/opt/visual-studio-code/bin/../code","ELECTRON_RUN_AS_NODE":"1","VSCODE_L10N_BUNDLE_LOCATION":"","VSCODE_DOTNET_INSTALL_TOOL_ORIGINAL_HOME":"/home/malsyned","APPLICATION_INSIGHTS_NO_DIAGNOSTIC_CHANNEL":"1","APPLICATIONINSIGHTS_CONFIGURATION_CONTENT":"{}"}
[cmake] -- The C compiler identification is Clang 19.1.5
[cmake] -- The CXX compiler identification is Clang 19.1.5
[cmake] -- The ASM compiler identification is Clang with GNU-like command-line
[cmake] -- Found assembler: /home/malsyned/packages/LLVM-ET-Arm-19.1.5-Linux-x86_64/bin/clang
[cmake] -- Detecting C compiler ABI info
[cmake] -- Detecting C compiler ABI info - done
[cmake] -- Check for working C compiler: /home/malsyned/packages/LLVM-ET-Arm-19.1.5-Linux-x86_64/bin/clang - skipped
[cmake] -- Detecting C compile features
[cmake] -- Detecting C compile features - done
[cmake] -- Detecting CXX compiler ABI info
[cmake] -- Detecting CXX compiler ABI info - done
[cmake] -- Check for working CXX compiler: /home/malsyned/packages/LLVM-ET-Arm-19.1.5-Linux-x86_64/bin/clang++ - skipped
[cmake] -- Detecting CXX compile features
[cmake] -- Detecting CXX compile features - done
[cmake] -- Performing Test DEBUG_MACRO_FLAG
[cmake] -- Performing Test DEBUG_MACRO_FLAG - Success
[cmake] -- Performing Test GENERAL_REGS_ONLY_FLAG
[cmake] -- Performing Test GENERAL_REGS_ONLY_FLAG - Failed
[cmake] -- Performing Test WARN_VFP_CLOBBER_FLAG
[cmake] -- Performing Test WARN_VFP_CLOBBER_FLAG - Success
[cmake] -- Found Doxygen: /usr/bin/doxygen (found version "1.13.2") found components: doxygen dot
[cmake] -- Found Git: /usr/bin/git (found version "2.49.0")
[cmake] -- Using a custom FREERTOS_PORT.
[cmake] -- Looking for sys/types.h
[cmake] -- Looking for sys/types.h - found
[cmake] -- Looking for stdint.h
[cmake] -- Looking for stdint.h - found
[cmake] -- Looking for stddef.h
[cmake] -- Looking for stddef.h - found
[cmake] -- Check size of long long
[cmake] -- Check size of long long - done
[cmake] -- Setting CPPUTEST_PLATFORM: Gcc
[cmake] -- Looking for fopen_s
[cmake] -- Looking for fopen_s - not found
[cmake] -- Looking for kill
[cmake] -- Looking for kill - not found
[cmake] -- Looking for fork
[cmake] -- Looking for fork - not found
[cmake] -- Looking for waitpid
[cmake] -- Looking for waitpid - not found
[cmake] -- Looking for gettimeofday
[cmake] -- Looking for gettimeofday - not found
[cmake] -- Looking for pthread_mutex_lock
[cmake] -- Looking for pthread_mutex_lock - not found
[cmake] -- Looking for strdup
[cmake] -- Looking for strdup - not found
[cmake] -- Performing Test CMAKE_HAVE_LIBC_PTHREAD
[cmake] -- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
[cmake] -- Check if compiler accepts -pthread
[cmake] -- Check if compiler accepts -pthread - no
[cmake] -- Looking for pthread_create in pthreads
[cmake] -- Looking for pthread_create in pthreads - not found
[cmake] -- Looking for pthread_create in pthread
[cmake] -- Looking for pthread_create in pthread - not found
[cmake] -- Could NOT find Threads (missing: Threads_FOUND) 
[cmake] -- Configuring done (2.3s)
[cmake] -- Generating done (0.1s)
[cmake] -- Build files have been written to: /home/malsyned/work/preferred/fsg/preferred-fsg/build/arm-debug
[cmakefileapi-parser] Read reply folder: /home/malsyned/work/preferred/fsg/preferred-fsg/build/arm-debug/.cmake/api/v1/reply
[cmakefileapi-parser] Found index files: ["cache-v2-67820b73205ab44be163.json","cmakeFiles-v1-9179efbbaa19715f3a9a.json","codemodel-v2-03d8cad993f644b0a492.json","directory-.-Debug-bd45beedfb51236c4180.json","directory-_deps.cpputest-build-Debug-2001403ed54af95ad282.json","directory-_deps.cpputest-build.src-Debug-c5247a96bf30e8d9ffc4.json","directory-_deps.cpputest-build.src.CppUTest-Debug-f7e5e05e2376250fea8b.json","directory-_deps.cpputest-build.src.CppUTestExt-Debug-faf64c9264f1013c6ac0.json","directory-_deps.freertos-kernel-build-Debug-5154e9a5facf64cfd517.json","directory-_deps.freertos-kernel-build.include-Debug-d356773737b72fa6bc5a.json","directory-_deps.freertos-kernel-build.portable-Debug-b5f863bdaf8ff39bb0da.json","directory-src.app-Debug-2e167ed549b5f7501b6a.json","directory-src.arm-Debug-6fbaf8ae9d717803baf2.json","directory-src.arm.ti.rm44l520pge-Debug-7f28aaf7b3a60d50b60f.json","directory-src.arm.ti.rm44l520pge.halcogen-Debug-a334fd7129867a6a5bec.json","directory-src.arm.ti.rm44l520pge.openrtos-Debug-f6ae54396dbbf5693454.json","directory-tests-Debug-b01f6abb0ab61427ef3b.json","index-2025-04-15T01-59-12-0727.json","target-Continuous-Debug-e1cbd7b23bb9ed6c0b72.json","target-ContinuousBuild-Debug-f46c841649756006ad00.json","target-ContinuousConfigure-Debug-8227b390ea7a72618aac.json","target-ContinuousCoverage-Debug-ee5b3d75515c452ea995.json","target-ContinuousMemCheck-Debug-83814e786e6c436c120a.json","target-ContinuousStart-Debug-558b13874adbfd41d68c.json","target-ContinuousSubmit-Debug-b26b87c5590a7289b2d9.json","target-ContinuousTest-Debug-a06e58aded5796b63837.json","target-ContinuousUpdate-Debug-31e432bc9fb623995563.json","target-CppUTest-Debug-7b0a44eb9900033287bc.json","target-CppUTestExt-Debug-87697f85ccd5d54d8da7.json","target-Experimental-Debug-f4af877508453d517859.json","target-ExperimentalBuild-Debug-e959fd81e597253b91ef.json","target-ExperimentalConfigure-Debug-e9501939413a34e9be33.json","target-ExperimentalCoverage-Debug-df7de4a4c329ca27e594.json","target-ExperimentalMemCheck-Debug-a36468afa1f39435ccc6.json","target-ExperimentalStart-Debug-dd9f88a5f1c51246bf4e.json","target-ExperimentalSubmit-Debug-02ca7017426fe88e5131.json","target-ExperimentalTest-Debug-987fb328e465efe07914.json","target-ExperimentalUpdate-Debug-6d93f6f03ed14abb1761.json","target-Nightly-Debug-463f6e1cb9a9d6b8c641.json","target-NightlyBuild-Debug-3bef9c0b6e73eca0574b.json","target-NightlyConfigure-Debug-91d795028dd5f81f0dc1.json","target-NightlyCoverage-Debug-c9b389b4b84ac128f436.json","target-NightlyMemCheck-Debug-b65e9c1addf4070f633c.json","target-NightlyMemoryCheck-Debug-a849357c696adc22d25e.json","target-NightlyStart-Debug-45b585be59935c89fe0d.json","target-NightlySubmit-Debug-2fd9533183372570cd19.json","target-NightlyTest-Debug-9e3712890fc74af58f2f.json","target-NightlyUpdate-Debug-9c7be0b2924e45f6c0f5.json","target-app-Debug-3b7f545f7114ad367de6.json","target-doc-Debug-3d28f2d638c9d2949a87.json","target-freertos_config-Debug-d1e8d7fcf9da251fc951.json","target-freertos_kernel-Debug-9ffbf0fab4dddd8fbe2d.json","target-freertos_kernel_port-Debug-891b43989f5d69e0277a.json","target-freertos_kernel_port_headers-Debug-d1c68409f9fbb429f34a.json","target-gitdescribe-Debug-4422059a8d49f57268e0.json","target-halcogen-Debug-1060c74a922c2ae1ec9d.json","target-hercules_bsp-Debug-3f675fb98a203c7cce63.json","target-preferred-fsg-Debug-9c52a2e28b306641b439.json","target-preferred-fsg-tests-all-Debug-322493639340846e0c06.json","target-segger-rtt-Debug-a151acc331202c4a0d4c.json","target-segger-rtt-picolibc-Debug-a5e2134c4fb246ddaf1d.json","target-segger-rtt-stdstreams-Debug-47ae225c03bc44a63f53.json","toolchains-v1-852637e0fed7669a4b9f.json"]
[cache] Reading CMake cache file /home/malsyned/work/preferred/fsg/preferred-fsg/build/arm-debug/CMakeCache.txt
[cache] Parsing CMake cache string
[extension] [6171] cmake.cleanConfigure finished (returned {"result":0,"resultType":0})

Additional Information

IntelliSense fails to find header files when Build Target is all:

IntelliSense finds header files when Build Target is preferred-fsg:

CMake File API replies for a UTILITY target and an EXECUTABLE target which both have src/main.c as a source file, leading to this bug:

target-doc-Debug-3d28f2d638c9d2949a87.json

target-preferred-fsg-Debug-9c52a2e28b306641b439.json

[Evelyn-001]

Thanks for reporting this issue. Today we try to repro this issue using a simple CMake project, but we didn't repro it. IntelliSense finds header files when Build Target is all. Please see the below screenshots. For further investigation, could you please share us a demo project with clear repro steps and then attach them to this issue? We are looking forward to hearing from you. Thanks.

[malsyned]

@Evelyn-001 Thanks for taking a look at this.

Your demo project doesn't look to me like it contains any UTILITY targets (i.e. targets created with add_custom_target()), so it wouldn't manifest this bug.

The order that configurations get added to the fileGroup map is important, too. For freshly-opened projects, this is affected at least by the lexical order of the target names.

Here is a minimal example that reproduces the bug for me:
cmake-tools-4404-20250416.zip

Steps to reproduce:

• Open the project
• Select a valid toolchain if prompted
• Open main.c
• Switch the Build Target back and forth between all and zzz_target
• See red squiggles appear and disappear from #include "header.h".

Please let me know if you still can't reproduce this bug. It is sensitive to the order that files and targets get added to certain maps, and I'm not positive that lexical ordering is the only thing I have to account for to reproduce it.

[Evelyn-001]

Thanks for your reply. Today we try to repro it using your demo project. And we find that the red squiggles always appear from #include "header.h" when switched the Build Target back and forth between all and zzz_target. Please see the below video. Could you please help check it? If we miss or misunderstand anything, please let us know. Thanks.

[malsyned]

Thanks again for taking the time to work on this. Unfortunately, you are not reproducing the issue that I'm describing. My red squiggles only appear under specific conditions. See the video below, taken today with CMake Tools 1.20.53.

As you can see, the red squiggles appear and disappear for me depending on the selected Build Target. I'm not sure why yours are there all the time.

How does your .vscode/c_cpp_properties.json look? I didn't include it in my example, I figured vscode would create it correctly for you. In order to reproduce this bug, configurationProvider must be ms-vscode.cmake-tools, so that's something to check. Here's mine, for comparison:

{
    "configurations": [
        {
            "name": "Linux",
            "includePath": [
                "${workspaceFolder}/**"
            ],
            "defines": [],
            "compilerPath": "/usr/bin/clang",
            "cStandard": "c17",
            "cppStandard": "c++17",
            "intelliSenseMode": "linux-clang-x64",
            "configurationProvider": "ms-vscode.cmake-tools"
        }
    ],
    "version": 4
}

I have also reproduced this with the latest development revision from GitHub, and I believe I've found the root cause, which #4405 is meant to address.

If there's anything I can do to help you reproduce this issue, please let me know, I'm happy to help.

[Evelyn-001]

Thanks for your reply. we could repro this issue after switch the Build Target back and forth between all and zzz_target. And our development team will investigate this issue later. We will get back to you if there is any update. Thanks for your support.