[Imc-makerspace] Windows Vista restricts non-Win32 apps to 32MB of memory
Stewart Dickson
s-dickson at hdfgroup.org
Thu Dec 30 10:46:51 CST 2010
Microsoft's campaign against open-source software
http://www.trnicely.net/misc/vista.html#Solutions
> Executable images created for the DOS/Wintel environment, using the
> GNU GCC compilers and language standards (but not linking to the Win32
> API), are subject to failure (or performance degradation) when
> executed in Microsoft Windows Vista, because Vista arbitrarily
> restricts the memory space for the GCC executable to 32 MB (33,554,432
> bytes). Attempts to allocate more memory than this using the
> malloc(...) function (or related functions, such as calloc(...)) will
> fail. This limitation applies whether the application is executed with
> the _Run_ command, within a Command Prompt box (DOS box), or with the
> Start command. This limitation does not appear in Windows XP, Windows
> 98SE, or standalone DOS; the exact same executable, running under
> Windows XP SP2 or Win98SE, is capable of allocating several hundred
> megabytes of physical memory (if present on the machine). The
> limitation appears to apply to any compiler, linker, or executable not
> conforming to Microsoft's proprietary Win32 API.
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