c++ - Virtual Alloc failing with code 87 - Invalid parameter -

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following code working on pcs, while on other giving error 87 - invalid parameter, can wrong?

filesize = dwdllsize; buffer = virtualalloc ( null, filesize, mem_commit | mem_reserve, page_readwrite );  if ( !buffer ) {     qmessagebox::warning(null,qstring("virtualalloc failed!"),qstring::number(getlasterror()));     return -1; }

i'm checking size 0, , file not bigger ~200kb.


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