VirtualProtect bug?
Robert Reif
reif at earthlink.net
Sat May 15 18:07:39 CDT 2004
I'm trying to write a test that checks for data overruns
using VirtualAlloc and VirtualProtect and I think
I may have found a bug. Here is the problem:
DWORD dwPageSize;
BYTE * twoPages, temp;
DWORD flOldProtect;
twoPages = VirtualAlloc(NULL, 2 * dwPageSize, MEM_RESERVE | MEM_COMMIT,
PAGE_READWRITE);
res = VirtualProtect(twoPages + dwPageSize, dwPageSize, PAGE_NOACCESS,
&flOldProtect);
temp = twoPages[dwPageSize + 1]; // should cause exception but
doesn't in wine
twoPages[dwPageSize + 1] = 0; // does cause exception
I would like to write a test to check the exception handling
but I don't know how to do a __try and __except in C.
Any ideas?
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