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Reserves lower 2 Gb (32-bit app) or 4 Gb (64-bit app) of address space.
Unit
ELowLevel
Syntax
Code (Delphi)
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procedure ReserveLowerMemory;
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Remarks
This function reserves lower part of address space. This would cause memory allocations to get memory from higher addresses, thus helping you to catch bugs in your code (like Integer-Pointer conversion, using signed Integers, etc).
This function does not allocate any memory. Address space is simply reserved. Therefore, your application will not allocate any additional memory when using this function. However, the available address space will be decreased, so your code may run out of memory.
We recommend to always call this function in all 64-bit applications, as it has plenty free address space.
Warning
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Do not call this function in a 32-bit app without marking your app as "large address awared". Otherwise your application will have no memory to run!
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Caution!
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Please note that your 32-bit large address awared application will have just 1 Gb (when run on 32-bit system) or 2 Gb (when run on 64-bit system) of memory after calling this function.
For this reason - we recommend to call this function for 32-bit apps only when debugging, not in production.
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Build date: 2025-04-11
Last edited: 2025-04-10
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