danmar · firewave · Jan 14, 2026 · Jul 28, 2023
diff --git a/cli/main.cpp b/cli/main.cpp
@@ -76,11 +76,6 @@
  */
 int main(int argc, char* argv[])
 {
-    // MS Visual C++ memory leak debug tracing
-#if defined(_MSC_VER) && defined(_DEBUG)
-    _CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) | _CRTDBG_LEAK_CHECK_DF);
-#endif
-
     CppCheckExecutor exec;
 
 // *INDENT-OFF*

diff --git a/cmake/compilerDefinitions.cmake b/cmake/compilerDefinitions.cmake
@@ -54,10 +54,6 @@ if(DISALLOW_PROCESS_EXECUTOR)
     add_definitions(-DDISALLOW_PROCESS_EXECUTOR)
 endif()
 
-if(MSVC AND DISABLE_CRTDBG_MAP_ALLOC)
-    add_definitions(-DDISABLE_CRTDBG_MAP_ALLOC)
-endif()
-
 if(NO_UNIX_SIGNAL_HANDLING)
     add_definitions(-DNO_UNIX_SIGNAL_HANDLING)
 endif()

diff --git a/cmake/findDependencies.cmake b/cmake/findDependencies.cmake
@@ -13,15 +13,6 @@ if(BUILD_GUI)
         message(WARNING "'Qt6Core_VERSION' is not set - using 6.0.0 as fallback")
         set(QT_VERSION "6.0.0")
     endif()
-    if(MSVC)
-        # disable Visual Studio C++ memory leak detection since it causes compiler errors with Qt 6
-        # D:\a\cppcheck\Qt\6.2.4\msvc2019_64\include\QtCore/qhash.h(179,15): warning C4003: not enough arguments for function-like macro invocation 'free' [D:\a\cppcheck\cppcheck\build\gui\cppcheck-gui.vcxproj]
-        # D:\a\cppcheck\Qt\6.2.4\msvc2019_64\include\QtCore/qhash.h(179,15): error C2059: syntax error: ',' [D:\a\cppcheck\cppcheck\build\gui\cppcheck-gui.vcxproj]
-        # this is supposed to be fixed according to the following tickets but it still happens
-        # https://bugreports.qt.io/browse/QTBUG-40575
-        # https://bugreports.qt.io/browse/QTBUG-86395
-        set(DISABLE_CRTDBG_MAP_ALLOC ON)
-    endif()
 
     if(BUILD_ONLINE_HELP)
         find_program(QHELPGENERATOR qhelpgenerator)

diff --git a/cmake/options.cmake b/cmake/options.cmake
@@ -104,7 +104,6 @@ if (NOT USE_BOOST AND USE_BOOST_INT128)
 endif()
 option(USE_LIBCXX           "Use libc++ instead of libstdc++"                               OFF)
 
-option(DISABLE_CRTDBG_MAP_ALLOC "Disable usage of Visual Studio C++ memory leak detection in Debug build" OFF)
 option(NO_UNIX_SIGNAL_HANDLING "Disable usage of Unix Signal Handling"                      OFF)
 option(NO_UNIX_BACKTRACE_SUPPORT "Disable usage of Unix Backtrace support"                  OFF)
 option(NO_WINDOWS_SEH       "Disable usage of Windows SEH"                                  OFF)

diff --git a/cmake/printInfo.cmake b/cmake/printInfo.cmake
@@ -38,7 +38,6 @@ message(STATUS)
 message(STATUS "USE_MATCHCOMPILER =     ${USE_MATCHCOMPILER}")
 message(STATUS "USE_MATCHCOMPILER_OPT = ${USE_MATCHCOMPILER_OPT}")
 message(STATUS)
-message(STATUS "DISABLE_CRTDBG_MAP_ALLOC = ${DISABLE_CRTDBG_MAP_ALLOC}")
 message(STATUS "NO_UNIX_SIGNAL_HANDLING = ${NO_UNIX_SIGNAL_HANDLING}")
 message(STATUS "NO_UNIX_BACKTRACE_SUPPORT = ${NO_UNIX_BACKTRACE_SUPPORT}")
 message(STATUS "NO_WINDOWS_SEH =        ${NO_WINDOWS_SEH}")

diff --git a/cppcheckpremium-suppressions b/cppcheckpremium-suppressions
@@ -25,9 +25,6 @@ premium-cert-str34-c
 # we intentionally pass structs
 premium-cert-dcl39-c-*
 
-# we need to declare reserved identifier _CRTDBG_MAP_ALLOC
-premium-cert-dcl51-cpp
-
 # we don't want to check the return values of fclose/sprintf/etc
 premium-cert-err33-c
 

diff --git a/gui/CMakeLists.txt b/gui/CMakeLists.txt
@@ -40,10 +40,6 @@ CheckOptions:
     if(WITH_QCHART)
         target_link_libraries(cppcheck-gui ${QT_CHARTS_LIB})
     endif()
-    if(MSVC)
-        # compilation will fail as e.g. QList::realloc would be replaced by MSVC's macro definition
-        target_compile_definitions(cppcheck-gui PRIVATE $<$<CONFIG:Debug>:DISABLE_CRTDBG_MAP_ALLOC>)
-    endif()
     if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
         if(QT_VERSION VERSION_LESS "6.4.0")
             # caused by Qt generated moc code - see https://bugreports.qt.io/browse/QTBUG-100915

diff --git a/lib/config.h b/lib/config.h
@@ -35,12 +35,6 @@
 #  define CPPCHECKLIB
 #endif
 
-// MS Visual C++ memory leak debug tracing
-#if !defined(DISABLE_CRTDBG_MAP_ALLOC) && defined(_MSC_VER) && defined(_DEBUG)
-#  define _CRTDBG_MAP_ALLOC
-#  include <crtdbg.h>
-#endif
-
 // compatibility macros
 #ifndef __has_builtin
 #define __has_builtin(x) 0

diff --git a/releasenotes.txt b/releasenotes.txt
@@ -14,6 +14,7 @@ GUI:
 -
 
 Changed interface:
+- removed CMake option "DISABLE_CRTDBG_MAP_ALLOC"
 -
 
 Infrastructure & dependencies:

diff --git a/test/main.cpp b/test/main.cpp
@@ -25,11 +25,6 @@
 
 int main(int argc, char *argv[])
 {
-    // MS Visual C++ memory leak debug tracing
-#if defined(_MSC_VER) && defined(_DEBUG)
-    _CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) | _CRTDBG_LEAK_CHECK_DF);
-#endif
-
     Preprocessor::macroChar = '$';     // While macroChar is char(1) per default outside test suite, we require it to be a human-readable character here.
     gDisableColors = true;
-Original file line number
+Diff line change
@@ Expand Up / @@ -14,6 +14,7 @@ GUI: @@
     -
     Changed interface:
+    - removed CMake option "DISABLE_CRTDBG_MAP_ALLOC"
     -
     Infrastructure & dependencies:
@@ Expand Down @@