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there's missing bounds checking on the Rectangle you pass to Robot.createScreenCapture. grab off the left of the display, and you get pixels from the right. grab off the bottom, and you get non-display memory. grab off the top, and you get EXC_BAD_ACCESS: 0 <<00000000>> 0xffff8a2c __memcpy + 652 (cpu_capabilities.h:189) 1 libawt.jnilib 0x9df0ad30 screenSrcGetBytes + 84 2 com.apple.CoreGraphics 0x903c540c CGAccessSessionGetChunks + 508 3 com.apple.CoreGraphics 0x9044f35c img_decode_read + 408 4 com.apple.CoreGraphics 0x903c3d68 img_data_lock + 3684 5 com.apple.CoreGraphics 0x903c27d8 CGSImageDataLockWithReference + 156 6 libRIP.A.dylib 0x945d7ad8 ripc_AcquireImage + 904 7 libRIP.A.dylib 0x945d6260 ripc_DrawImage + 2324 8 com.apple.CoreGraphics 0x903c2568 CGContextDelegateDrawImage + 76 9 com.apple.CoreGraphics 0x903c24d0 CGContextDrawImage + 340 10 libawt.jnilib 0x9df0afcc Java_apple_awt_CRobot_getScreenPixels + 560 bug report with example code and instructions to reproduce thrown into the "Send to Apple..." void. i thought i'd let others on the list know. the obvious "so don't do that" work-around works, though y-coordinate 0 appears to be half way down the screen menu bar, so maybe there's some coordinate translation missing too? (all i know about CoreGraphics i learned from otool -tvV on other programs; i've never actually used it.) -- Elliott Hughes, http://www.jessies.org/~enh/ |
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