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fatal error C1060: compiler is out of heap space (again)

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  • I IgKh

    @Sprezzatura That's not what I asked. I didn't ask which file the error message points to, but rather during the compilation of which of your project files does the error happen? In C++ each project source file is compiled separately as a different compilation unit, re-parsing the header files (unless using pch).

    Just post the entire build output if you don't know.

    SprezzaturaS Offline
    SprezzaturaS Offline
    Sprezzatura
    wrote on last edited by Sprezzatura
    #7

    @IgKh Sorry, it looks like the error arises when compiling the first 21 .CPP files. Then the next 7 .CPP don't have the error. Then I see:

    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG065.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG013.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG034.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG_IOPL.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG021.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG028.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG030.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG031.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG059.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG078.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG093.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG093B.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG093C.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG096.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG096W.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG106.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG121.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG125.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG129.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile.Debug [debug\PG131.obj] Error 2
    jom: C:\Progeny\CC_Qt\build\Desktop_Qt_6_9_0_MSVC2022_64bit-Debug\Makefile [debug] Error 2
    

    Here's a typical error message:

    PG065.CPP
    C:\Qt\6.9.0\msvc2022_64\include\QtCore/qabstracteventdispatcher.h(18): fatal error C1060: compiler is out of heap space
    	cl -c -nologo -Zc:wchar_t -FS -std:c++17 -Zc:__cplusplus -permissive- /Zm2000 -Zi -MDd -utf-8 -W0 /Fddebug\CC9.vc.pdb -DUNICODE -D_UNICODE -DWIN32 -D_ENABLE_EXTENDED_ALIGNED_STORAGE -DWIN64 -DCC_MATE -DQT_WIDGETS_LIB -DQT_HELP_LIB -DQT_PRINTSUPPORT_LIB -DQT_UITOOLS_LIB -DS4STAND_ALONE -DVERSION_MAJOR=9 -DVERSION_MINOR=0 -DVERSION_BUILD=7 -D_CRT_SECURE_NO_WARNINGS -DWIN32 -DS4WIN32 -D_MBCS -DS4FOX -DQT_QML_DEBUG -DQT_HELP_LIB -DQT_UITOOLS_LIB -DQT_OPENGLWIDGETS_LIB -DQT_PRINTSUPPORT_LIB -DQT_WIDGETS_LIB -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_SQL_LIB -DQT_NETWORK_LIB -DQT_XML_LIB -DQT_CORE_LIB -Fodebug\PG_IOPL.obj C:\---\sandbox\CodeBase6\PG_IOPL.CPP
    
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    0
    • hskoglundH Offline
      hskoglundH Offline
      hskoglund
      wrote on last edited by
      #8

      If you compile in release mode, do you still get the same compiler error?
      (Also, when compiling in debug mode, try removing that -FS option.)

      SprezzaturaS 1 Reply Last reply
      0
      • SprezzaturaS Sprezzatura

        @Christian-Ehrlicher I am using a 64-bit compiler. Compiling for 64-bit executable.

        Christian EhrlicherC Offline
        Christian EhrlicherC Offline
        Christian Ehrlicher
        Lifetime Qt Champion
        wrote on last edited by
        #9

        @Sprezzatura said in fatal error C1060: compiler is out of heap space (again):

        I am using a 64-bit compiler. Compiling for 64-bit executable.

        Then you will not get this error.
        What does 'where cl' prints out?

        Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
        Visit the Qt Academy at https://academy.qt.io/catalog

        SprezzaturaS 3 Replies Last reply
        1
        • hskoglundH hskoglund

          If you compile in release mode, do you still get the same compiler error?
          (Also, when compiling in debug mode, try removing that -FS option.)

          SprezzaturaS Offline
          SprezzaturaS Offline
          Sprezzatura
          wrote on last edited by
          #10

          @hskoglund I get the same errors in Release mode.

          The "/FS" is generated by Qt, not sure how to suppress it.
          "/FS-"?

          1 Reply Last reply
          0
          • Christian EhrlicherC Christian Ehrlicher

            @Sprezzatura said in fatal error C1060: compiler is out of heap space (again):

            I am using a 64-bit compiler. Compiling for 64-bit executable.

            Then you will not get this error.
            What does 'where cl' prints out?

            SprezzaturaS Offline
            SprezzaturaS Offline
            Sprezzatura
            wrote on last edited by Sprezzatura
            #11

            @Christian-Ehrlicher Not sure where to enter "where cl". The Terminal Window returns:

            INFO: Could not find files for the given pattern(s)
            

            The compiler I am using, according to the "Manake Kits" section, is:

            Microsoft Visual C++ Compiler 17.12.35527.113 (amd64)

            Not (x86), not (amd64_x86), not (x86_amd64), nor anything containing "arm".

            To reiterate, it compiles successfully under Qt 5.15 + VS 2019.

            BTW thank you for your help and patience :o)

            1 Reply Last reply
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            • Christian EhrlicherC Christian Ehrlicher

              @Sprezzatura said in fatal error C1060: compiler is out of heap space (again):

              I am using a 64-bit compiler. Compiling for 64-bit executable.

              Then you will not get this error.
              What does 'where cl' prints out?

              SprezzaturaS Offline
              SprezzaturaS Offline
              Sprezzatura
              wrote on last edited by
              #12

              @Christian-Ehrlicher Here's the output from "vswhere":

              instanceId: 1b580a97
              installDate: 12 Apr 2025 9:53:45 AM
              installationName: VisualStudio/15.9.78+36631.12
              installationPath: C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional
              installationVersion: 15.9.36631.12
              productId: Microsoft.VisualStudio.Product.Professional
              productPath: C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\IDE\devenv.exe
              state: 7
              isComplete: 0
              isLaunchable: 1
              isPrerelease: 0
              isRebootRequired: 0
              displayName: Visual Studio Professional 2017
              description: Professional developer tools and services for small teams
              channelId: VisualStudio.15.Release
              channelUri: https://aka.ms/vs/15/release/channel
              enginePath: C:\Program Files (x86)\Microsoft Visual Studio\Installer\resources\app\ServiceHub\Services\Microsoft.VisualStudio.Setup.Service
              installChannelUri: https://aka.ms/vs/15/release/0e24fba09_-593026118/channel
              installedChannelId: VisualStudio.15.Release
              installedChannelUri: https://aka.ms/vs/15/release/channel
              releaseNotes: https://go.microsoft.com/fwlink/?LinkId=660692#15.9.78
              resolvedInstallationPath: C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional
              thirdPartyNotices: https://go.microsoft.com/fwlink/?LinkId=660708
              updateDate: 2026-01-07T12:09:16.4473894Z
              catalog_buildBranch: d15.9
              catalog_buildVersion: 15.9.36631.12
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              catalog_localBuild: build-lab
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              catalog_productPatchVersion: 78
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              properties_includeRecommended: 0
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              instanceId: 6e3ad4c1
              installDate: 15 Dec 2024 11:42:02 AM
              installationName: VisualStudio/16.11.42+35425.106
              installationPath: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
              installationVersion: 16.11.35425.106
              productId: Microsoft.VisualStudio.Product.Community
              productPath: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\devenv.exe
              state: 4294967295
              isComplete: 1
              isLaunchable: 1
              isPrerelease: 0
              isRebootRequired: 0
              displayName: Visual Studio Community 2019
              description: Powerful IDE, free for students, open-source contributors, and individuals
              channelId: VisualStudio.16.Release
              channelUri: https://aka.ms/vs/16/release/channel
              enginePath: C:\Program Files (x86)\Microsoft Visual Studio\Installer\resources\app\ServiceHub\Services\Microsoft.VisualStudio.Setup.Service
              installedChannelId: VisualStudio.16.Release
              installedChannelUri: https://aka.ms/vs/16/release/channel
              releaseNotes: https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.11#16.11.42
              resolvedInstallationPath: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
              thirdPartyNotices: https://go.microsoft.com/fwlink/?LinkId=660909
              updateDate: 2024-12-15T15:42:02.8085868Z
              catalog_buildBranch: d16.11
              catalog_buildVersion: 16.11.35425.106
              catalog_id: VisualStudio/16.11.42+35425.106
              catalog_localBuild: build-lab
              catalog_manifestName: VisualStudio
              catalog_manifestType: installer
              catalog_productDisplayVersion: 16.11.42
              catalog_productLine: Dev16
              catalog_productLineVersion: 2019
              catalog_productMilestone: RTW
              catalog_productMilestoneIsPreRelease: False
              catalog_productName: Visual Studio
              catalog_productPatchVersion: 42
              catalog_productPreReleaseMilestoneSuffix: 1.0
              catalog_productSemanticVersion: 16.11.42+35425.106
              catalog_requiredEngineVersion: 2.11.72.18200
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              properties_includeRecommended: 0
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              properties_setupEngineFilePath: C:\Program Files (x86)\Microsoft Visual Studio\Installer\setup.exe
              
              instanceId: a3aac630
              installDate: 03 Jul 2024 6:57:14 PM
              installationName: VisualStudio/17.13.6+35931.197
              installationPath: C:\Program Files\Microsoft Visual Studio\2022\Community
              installationVersion: 17.13.35931.197
              productId: Microsoft.VisualStudio.Product.Community
              productPath: C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\devenv.exe
              state: 4294967295
              isComplete: 1
              isLaunchable: 1
              isPrerelease: 0
              isRebootRequired: 0
              displayName: Visual Studio Community 2022
              description: Powerful IDE, free for students, open-source contributors, and individuals
              channelId: VisualStudio.17.Release
              channelUri: https://aka.ms/vs/17/release/channel
              enginePath: C:\Program Files (x86)\Microsoft Visual Studio\Installer\resources\app\ServiceHub\Services\Microsoft.VisualStudio.Setup.Service
              installedChannelId: VisualStudio.17.Release
              installedChannelUri: https://aka.ms/vs/17/release/channel
              releaseNotes: https://docs.microsoft.com/en-us/visualstudio/releases/2022/release-notes-v17.13#17.13.6
              resolvedInstallationPath: C:\Program Files\Microsoft Visual Studio\2022\Community
              thirdPartyNotices: https://go.microsoft.com/fwlink/?LinkId=661288
              updateDate: 2025-04-10T19:20:01.9041268Z
              catalog_buildBranch: d17.13
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              properties_setupEngineFilePath: C:\Program Files (x86)\Microsoft Visual Studio\Installer\setup.exe
              
              instanceId: bd038e2e
              installDate: 12 Apr 2025 11:50:29 AM
              installationName: VisualStudio/15.9.78+36631.12
              installationPath: C:\Program Files (x86)\Microsoft Visual Studio\2017\Community
              installationVersion: 15.9.36631.12
              productId: Microsoft.VisualStudio.Product.Community
              productPath: C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\devenv.exe
              state: 4294967295
              isComplete: 1
              isLaunchable: 1
              isPrerelease: 0
              isRebootRequired: 0
              displayName: Visual Studio Community 2017
              description: Free, fully-featured IDE for students, open-source and individual developers
              channelId: VisualStudio.15.Release
              channelUri: https://aka.ms/vs/15/release/channel
              enginePath: C:\Program Files (x86)\Microsoft Visual Studio\Installer\resources\app\ServiceHub\Services\Microsoft.VisualStudio.Setup.Service
              installedChannelId: VisualStudio.15.Release
              installedChannelUri: https://aka.ms/vs/15/release/channel
              releaseNotes: https://go.microsoft.com/fwlink/?LinkId=660692#15.9.78
              resolvedInstallationPath: C:\Program Files (x86)\Microsoft Visual Studio\2017\Community
              thirdPartyNotices: https://go.microsoft.com/fwlink/?LinkId=660708
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              catalog_productName: Visual Studio
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              catalog_requiredEngineVersion: 1.18.1063.29791
              properties_appLocalWPF: false
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              properties_channelManifestId: VisualStudio.15.Release/15.9.78+36631.12
              properties_includeRecommended: 0
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              properties_setupEngineFilePath: C:\Program Files (x86)\Microsoft Visual Studio\Installer\setup.exe
              
              1 Reply Last reply
              0
              • Christian EhrlicherC Christian Ehrlicher

                @Sprezzatura said in fatal error C1060: compiler is out of heap space (again):

                I am using a 64-bit compiler. Compiling for 64-bit executable.

                Then you will not get this error.
                What does 'where cl' prints out?

                SprezzaturaS Offline
                SprezzaturaS Offline
                Sprezzatura
                wrote on last edited by
                #13
                This post is deleted!
                1 Reply Last reply
                0
                • Christian EhrlicherC Offline
                  Christian EhrlicherC Offline
                  Christian Ehrlicher
                  Lifetime Qt Champion
                  wrote on last edited by
                  #14

                  Sorry I meant where cl.exe

                  Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                  Visit the Qt Academy at https://academy.qt.io/catalog

                  SprezzaturaS 2 Replies Last reply
                  0
                  • Christian EhrlicherC Christian Ehrlicher

                    Sorry I meant where cl.exe

                    SprezzaturaS Offline
                    SprezzaturaS Offline
                    Sprezzatura
                    wrote on last edited by
                    #15

                    @Christian-Ehrlicher

                    where cl.exe
                    INFO: Could not find files for the given pattern(s).
                    
                    1 Reply Last reply
                    0
                    • Christian EhrlicherC Christian Ehrlicher

                      Sorry I meant where cl.exe

                      SprezzaturaS Offline
                      SprezzaturaS Offline
                      Sprezzatura
                      wrote on last edited by
                      #16

                      @Christian-Ehrlicher I've found the culprit. If I include the following in the .PRO file:

                      QMAKE_CFLAGS += -Zc:__cplusplus
                      QMAKE_CFLAGS += -permissive-
                      

                      It compiles successfully with Qt 5.15
                      However, when I include this to the .PRO file:

                      QMAKE_CFLAGS += -std:c++17
                      QMAKE_CFLAGS += -Zc:__cplusplus
                      QMAKE_CFLAGS += -permissive-
                      

                      even Qt 5.15 fails with the "Out of Heap Space" error.
                      If I remove this line and try to compile with Qt 6.9, I get:

                      QMAKE_CFLAGS += -std:c++17

                      "Qt requires a C++17 compiler, and a suitable value for __cplusplus. On MSVC, you must pass the /Zc:__cplusplus option to the compiler"
                      

                      Why would this option cause the Out of Heap Space error? Are there other options I need to add?

                      1 Reply Last reply
                      0
                      • Christian EhrlicherC Offline
                        Christian EhrlicherC Offline
                        Christian Ehrlicher
                        Lifetime Qt Champion
                        wrote on last edited by Christian Ehrlicher
                        #17

                        You have to call it in the console where you build you Qt... you are using a 32bit compiler.

                        λ where cl
                        C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.44.35207\bin\Hostx64\x64\cl.exe
                        

                        Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                        Visit the Qt Academy at https://academy.qt.io/catalog

                        SprezzaturaS 1 Reply Last reply
                        0
                        • Christian EhrlicherC Christian Ehrlicher

                          You have to call it in the console where you build you Qt... you are using a 32bit compiler.

                          λ where cl
                          C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.44.35207\bin\Hostx64\x64\cl.exe
                          
                          SprezzaturaS Offline
                          SprezzaturaS Offline
                          Sprezzatura
                          wrote on last edited by Sprezzatura
                          #18

                          @Christian-Ehrlicher
                          [1] Here's what is displayed in the Compile Output window when I delete the "-nologo" option:

                          Microsoft (R) C/C++ Optimizing Compiler Version 19.43.34810 for x64
                          Copyright (C) Microsoft Corporation.  All rights reserved.
                          

                          Note the "x64".

                          [2] My .PRO file contains:

                          contains(QT_ARCH, i386) {
                              message("32-bit" $$QT_ARCH $$QT_VERSION)
                          }
                          contains(QT_ARCH, x86_64) {
                              message("64-bit" $$QT_ARCH $$QT_VERSION)
                          }
                          

                          This is displayed in the Compile Output window:

                          Project MESSAGE: 64-bit x86_64 6.9.0
                          

                          [3] I tried creating a new Kit and adding a 32-bit compiler. Qt flat out rejected it.

                          [4] What does the "λ" lambda mean in your example?
                          When you say "the console where you build your Qt", do you mean the Terminal window in Qt Creator?
                          When I do that, I get:

                          >where cl
                          INFO: Could not find files for the given pattern(s).
                          

                          I'm using Windows.

                          Christian EhrlicherC 1 Reply Last reply
                          0
                          • SprezzaturaS Sprezzatura

                            @Christian-Ehrlicher
                            [1] Here's what is displayed in the Compile Output window when I delete the "-nologo" option:

                            Microsoft (R) C/C++ Optimizing Compiler Version 19.43.34810 for x64
                            Copyright (C) Microsoft Corporation.  All rights reserved.
                            

                            Note the "x64".

                            [2] My .PRO file contains:

                            contains(QT_ARCH, i386) {
                                message("32-bit" $$QT_ARCH $$QT_VERSION)
                            }
                            contains(QT_ARCH, x86_64) {
                                message("64-bit" $$QT_ARCH $$QT_VERSION)
                            }
                            

                            This is displayed in the Compile Output window:

                            Project MESSAGE: 64-bit x86_64 6.9.0
                            

                            [3] I tried creating a new Kit and adding a 32-bit compiler. Qt flat out rejected it.

                            [4] What does the "λ" lambda mean in your example?
                            When you say "the console where you build your Qt", do you mean the Terminal window in Qt Creator?
                            When I do that, I get:

                            >where cl
                            INFO: Could not find files for the given pattern(s).
                            

                            I'm using Windows.

                            Christian EhrlicherC Offline
                            Christian EhrlicherC Offline
                            Christian Ehrlicher
                            Lifetime Qt Champion
                            wrote on last edited by
                            #19

                            @Sprezzatura said in fatal error C1060: compiler is out of heap space (again):

                            where cl
                            INFO: Could not find files for the given pattern(s).

                            Again: execute this on the command line where you also compiled your Qt. Execatly where you did 'cl -nologo'
                            You are using a 32bit compiler which creates 64 bit executables. Or you have very low ram on your system which I doubt.

                            Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                            Visit the Qt Academy at https://academy.qt.io/catalog

                            SprezzaturaS 2 Replies Last reply
                            0
                            • hskoglundH Offline
                              hskoglundH Offline
                              hskoglund
                              wrote on last edited by
                              #20

                              In my VS2002 installation there are 4 different cl.exe versions:
                              c:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.43.34808\bin\Hostx86\x86\cl.exe
                              c:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.43.34808\bin\Hostx86\x64\cl.exe
                              c:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.43.34808\bin\Hostx64\x86\cl.exe
                              c:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.43.34808\bin\Hostx64\x64\cl.exe

                              Two of them (the ..\Hostx86\x64\cl.exe and the ..\Hostx64\x64\cl.exe will show the same output:
                              "Microsoft (R) C/C++ Optimizing Compiler Version 19.43.34810 for x64" and both will compile and build 64 bit ..exe files for Qt6.

                              So you have a 50% chance of running the correct compiler, i.e. the cl.exe in the subdirectory ..\Hostx64\x64

                              1 Reply Last reply
                              3
                              • Christian EhrlicherC Christian Ehrlicher

                                @Sprezzatura said in fatal error C1060: compiler is out of heap space (again):

                                where cl
                                INFO: Could not find files for the given pattern(s).

                                Again: execute this on the command line where you also compiled your Qt. Execatly where you did 'cl -nologo'
                                You are using a 32bit compiler which creates 64 bit executables. Or you have very low ram on your system which I doubt.

                                SprezzaturaS Offline
                                SprezzaturaS Offline
                                Sprezzatura
                                wrote on last edited by
                                #21

                                @Christian-Ehrlicher I'm not launching this from the command line. I'm using Qt Creator, which automatically creates a stream of commands, including launching cl.exe, followed by a ton of parameters.
                                The output appears in the "Compile Output" window of the Qt Creator IDE.

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                                • Christian EhrlicherC Christian Ehrlicher

                                  @Sprezzatura said in fatal error C1060: compiler is out of heap space (again):

                                  where cl
                                  INFO: Could not find files for the given pattern(s).

                                  Again: execute this on the command line where you also compiled your Qt. Execatly where you did 'cl -nologo'
                                  You are using a 32bit compiler which creates 64 bit executables. Or you have very low ram on your system which I doubt.

                                  SprezzaturaS Offline
                                  SprezzaturaS Offline
                                  Sprezzatura
                                  wrote on last edited by Sprezzatura
                                  #22

                                  @Christian-Ehrlicher

                                  Good news! It's working!

                                  The solution was to upgrade from VS 2022 ver. 17.13, to ver. 17.14.
                                  I tried getting VS to update itself, but it locked up and wiped itself. I had to download and re-install VS 17.14.

                                  Here's the kicker: I got the suggestion from OpenAI/ChatGPT!

                                  I'm an AI skeptic, but I have to give credit where it's due.

                                  Also, ChatGPT suggested "-bigobj", but that didn't make a difference.

                                  A sincere thanks to Christian and hskoglund from a 77-year old, half-blind hack :o)

                                  Update 17 Mar 2026: The problem reoccurs every few days. Solution is to kill memory hogs until it works: Firefox, Chrome, Thunderbird, Teams, Adobe, whatever.

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                                  • SprezzaturaS Sprezzatura has marked this topic as solved on
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                                    SimonSchroeder
                                    wrote on last edited by
                                    #23

                                    Just as an aside (since I'm a little late to the party): You should turn on C++17 in the .pro file with the line

                                    CONFIG += c++17
                                    
                                    SprezzaturaS 1 Reply Last reply
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                                    • S SimonSchroeder

                                      Just as an aside (since I'm a little late to the party): You should turn on C++17 in the .pro file with the line

                                      CONFIG += c++17
                                      
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                                      Sprezzatura
                                      wrote on last edited by Sprezzatura
                                      #24

                                      @SimonSchroeder I do have that included:

                                      versionAtLeast(QT_VERSION, 6.0.0) {
                                      	CONFIG += c++17	# Fails with Qt 5.13 
                                      	QMAKE_CFLAGS += -std:c++17                 # required for Qt 6
                                      }
                                      
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                                      • SprezzaturaS Offline
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                                        Sprezzatura
                                        wrote on last edited by
                                        #25

                                        Interesting update: I got the error again, appearing at random after days of successful compilation.

                                        I terminated Firefox, the problem went away!

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                                          SimonSchroeder
                                          wrote on last edited by
                                          #26

                                          I occasionally have this problem, too. Here's what I have figured out: The task manager shows memory "in use" and "committed" memory. It's the committed memory that is of importance: Committed memory means that through allocations this amount of memory has been promised to some software, but the corresponding memory pages have not been accessed, yet (which is why memory "in use" can be lower). The reason why this memory is not available is because it was already allocated. This means that committed memory must be available at any time (because it is after allocation the program cannot figure out anymore that it would not have this memory, so it must be there). Once the committed memory is full, nothing works anymore (even when memory "in use" shows that you still have 32 GB left). This is why closing Firefox (which usually uses up a lot of memory) helped. Rebooting your computer also helps.

                                          Basically, "memory in use" is a useless metric in Windows 11. The only thing that matters is committed memory. (You can find programs that use a lot of committed memory if you select "Details" on the left pane of the task manager.)

                                          BTW, does anybody know something like a little widget for Windows 11 that shows committed memory? I would like to have an eye on this. Otherwise Windows will reboot like every other week or so because it ran out of memory (while memory "in use" still shows 32 GB left).

                                          JonBJ 1 Reply Last reply
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