Force heap allocations above 4 GB

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To force heap allocations above the 4 GB limit on a 64-bit Windows system, you can use the /LARGEADDRESSAWARE linker flag when compiling your application. This flag enables the application to use the full 64-bit address space, allowing heap allocations above the default 4 GB limit.

Here's how you can enable the /LARGEADDRESSAWARE flag in various development environments:

Visual Studio:

  1. Open your project in Visual Studio.
  2. Right-click on your project in the Solution Explorer and select "Properties".
  3. In the project properties window, navigate to "Configuration Properties" > "Linker" > "System".
  4. Set the "Enable Large Addresses" property to "Yes (/LARGEADDRESSAWARE)".

GCC (MinGW):

  1. When compiling your application using GCC, add the -Wl,--large-address-aware flag to the linker command line.

CMake:

  1. In your CMakeLists.txt file, add the following line to enable the /LARGEADDRESSAWARE flag:
    bash
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /LARGEADDRESSAWARE")

By enabling the /LARGEADDRESSAWARE flag, your application will have access to the full 64-bit address space, allowing heap allocations above 4 GB. Keep in mind that this flag only works on 64-bit systems, and it should be used with caution, as it may have compatibility implications with certain libraries or dependencies.