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Improve error reporting for an invalid LargeConsoleRead line.

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This commit is contained in:
Ryan Prichard 2015-11-06 02:21:36 -06:00
parent ce2d9f1b04
commit 24dd41bb79
1 changed files with 12 additions and 2 deletions
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14
agent/LargeConsoleRead.h
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@ -2,10 +2,12 @@
#define LARGE_CONSOLE_READ_H
#include <windows.h>
#include <stdlib.h>
#include <vector>
#include "SmallRect.h"
#include "../shared/DebugClient.h"
#include "../shared/WinptyAssert.h"
class Win32Console;
@ -15,16 +17,24 @@ public:
LargeConsoleReadBuffer();
const SmallRect &rect() const { return m_rect; }
const CHAR_INFO *lineData(int line) const {
ASSERT(line >= m_rect.Top && line <= m_rect.Bottom);
validateLineNumber(line);
return &m_data[(line - m_rect.Top) * m_rectWidth];
}
private:
CHAR_INFO *lineDataMut(int line) {
ASSERT(line >= m_rect.Top && line <= m_rect.Bottom);
validateLineNumber(line);
return &m_data[(line - m_rect.Top) * m_rectWidth];
}
void validateLineNumber(int line) const {
if (line < m_rect.Top || line > m_rect.Bottom) {
trace("Fatal error: LargeConsoleReadBuffer: invalid line %d for "
"read rect %s", line, m_rect.toString().c_str());
abort();
}
}
SmallRect m_rect;
int m_rectWidth;
std::vector<CHAR_INFO> m_data;