winpty/misc/WindowsBugCrashReader.cc

28 lines
885 B
C++

// I noticed this on the ConEmu web site:
//
// https://social.msdn.microsoft.com/Forums/en-US/40c8e395-cca9-45c8-b9b8-2fbe6782ac2b/readconsoleoutput-cause-access-violation-writing-location-exception
// https://conemu.github.io/en/MicrosoftBugs.html
//
// In Windows 7, 8, and 8.1, a ReadConsoleOutputW with an out-of-bounds read
// region crashes the application. I have reproduced the problem on Windows 8
// and 8.1, but not on Windows 7.
//
#include <windows.h>
#include "TestUtil.cc"
int main() {
setWindowPos(0, 0, 1, 1);
setBufferSize(80, 25);
setWindowPos(0, 0, 80, 25);
const HANDLE conout = openConout();
static CHAR_INFO lineBuf[80];
SMALL_RECT readRegion = { 0, 999, 79, 999 };
const BOOL ret = ReadConsoleOutputW(conout, lineBuf, {80, 1}, {0, 0}, &readRegion);
ASSERT(!ret && "ReadConsoleOutputW should have failed");
return 0;
}