I have managed to fix it up so it doesn't error out but it produces
different output on the two platforms. and i'm finding the code very
hard to follow.
The first issue was a relatively simple one.
in utils/dr_rdpng.c some tweaking is required, replace the call to
png_get_IHDR with
//png_uint_32 is 64 bit on some architectures!
png_uint_32 widthpu32,heightpu32;
png_get_IHDR(
png_ptr, info_ptr,
&widthpu32, &heightpu32, &bit_depth, &color_type,
&interlace_type, NULL, NULL
);
*width = widthpu32;
*height = heightpu32;
The second problem is that the compbination of calculations in
obj_node_t::write_data and obj_node_t::write_data_at leads to negative
offsets. I dunno what the correct fix is for that (I tried both
replacing 4 with sizeof(obj_besch_t) and replacing sizeof(obj_besch_t)
with 4) both stopped it crashing neither made it produce the same output
as the i386 version.
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