Created
November 24, 2018 17:23
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Assertion failed: (0), function compress_data_to_8_bit, file /BuildRoot/Library/Caches/com.apple.xbs/Sources/CoreGraphics/CoreGraphics-1247.4.1/CoreGraphics/Images/CGImage.c, line 640.
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| OS X Mojave CGImageMaskCreate(): | |
| ``` | |
| Assertion failed: (0), function compress_data_to_8_bit, file /BuildRoot/Library/Caches/com.apple.xbs/Sources/CoreGraphics/CoreGraphics-1247.4.1/CoreGraphics/Images/CGImage.c, line 640. | |
| ``` | |
| The issue seems to occur with 24-bit RGB images. 32-bit (RGBA) or 8 bit (greyscale) do not assert. | |
| `pngcrush -noreduce -c [0|2|4|6] input.png output.png` | |
| where c flag is: | |
| 0: greyscale, no alpha | |
| 2: true color, no alpha (do not use except to verify the above bug :) | |
| 4: greyscale, with alpha | |
| 6: true color, with alpha |
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