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  1. Qt
  2. QTBUG-116102

[Win] If Qt is built with ASAN then end-user applications must also be built with ASAN

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: P2: Important P2: Important
    • None
    • 6.6
    • Build System
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      I have a MSVC build of Qt with address sanitizer enabled. Upon building an application using this build of Qt with QMake I am faced with these linker errors:

      Qt6EntryPointd.lib(qtentrypoint_win.cpp.obj) : error LNK2019: unresolved external symbol __asan_report_load4 referenced in function "int __cdecl qtEntryPoint(void)" (?qtEntryPoint@@YAHXZ)
Qt6EntryPointd.lib(qtentrypoint_win.cpp.obj) : error LNK2019: unresolved external symbol __asan_report_load8 referenced in function "int __cdecl qtEntryPoint(void)" (?qtEntryPoint@@YAHXZ)
Qt6EntryPointd.lib(qtentrypoint_win.cpp.obj) : error LNK2019: unresolved external symbol __asan_report_store4 referenced in function "int __cdecl qtEntryPoint(void)" (?qtEntryPoint@@YAHXZ)
Qt6EntryPointd.lib(qtentrypoint_win.cpp.obj) : error LNK2019: unresolved external symbol __asan_report_store8 referenced in function "int __cdecl qtEntryPoint(void)" (?qtEntryPoint@@YAHXZ)
Qt6EntryPointd.lib(qtentrypoint_win.cpp.obj) : error LNK2019: unresolved external symbol __asan_set_shadow_00 referenced in function "int __cdecl qtEntryPoint(void)" (?qtEntryPoint@@YAHXZ)
Qt6EntryPointd.lib(qtentrypoint_win.cpp.obj) : error LNK2019: unresolved external symbol __asan_shadow_memory_dynamic_address referenced in function "int __cdecl qtEntryPoint(void)" (?qtEntryPoint@@YAHXZ)
VCASAND.lib(vcasan.obj) : error LNK2019: unresolved external symbol __asan_get_report_description referenced in function "void __cdecl __vcasan::ReportCallback(char const *)" (?ReportCallback@__vcasan@@YAXPEBD@Z)
VCASAND.lib(vcasan.obj) : error LNK2019: unresolved external symbol __asan_set_error_report_callback referenced in function "public: __cdecl __vcasan::VSErrorReportingInit::VSErrorReportingInit(void)" (??0VSErrorReportingInit@__vcasan@@QEAA@XZ)

      The solution is to add -fsanitize to the command line.

      QMAKE_CFLAGS   += -fsanitize=address
QMAKE_CXXFLAGS += -fsanitize=address

      But optimally the application would either inherit this, or the entry point lib would not be compiled with these symbols.

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            qtbuildsystem Qt Build System Team
            manordheim Mårten Nordheim
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