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Avoid potential read off end of trackimage

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This commit is contained in:
Aaron Culliney 2015-12-12 00:16:14 -08:00
parent 651ac246e3
commit ef1963a175
1 changed files with 4 additions and 2 deletions
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6
src/disk.c
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@ -388,8 +388,10 @@ static void denibblize_track(const uint8_t * const src, int drive, uint8_t * con
RELEASE_LOG("WRAPPING PROLOGUE ...");
offset -= disk6.disk[drive].track_width;
}
sector = ((trackimage[offset++] & 0x55) << 1);
sector |= (trackimage[offset++] & 0x55);
sector = ((trackimage[offset] & 0x55) << 1);
offset = (offset+1) % disk6.disk[drive].track_width;
sector |= (trackimage[offset] & 0x55);
offset = (offset+1) % disk6.disk[drive].track_width;
continue;
}
if (UNLIKELY(prologue[2] != 0xAD)) {