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cmap_fmt4, cmap_fmt6 and glyph_id functions declaration and definition didn't match, causing errors when compiling for 32bit (-m32 compiler and linker flag). Some variables were created as unsigned long, pointer to them was passed to functions taking uint_fast_32_t* which is unsigned long int* (not the same as unsigned long*). I think the whole uint_fast_32_t can be replaced with just unsigned int, but I didn't do it in this PR.