libpng issues

[Marco Alanen]

After successfully porting our application from Linux to cygwin, most of 
the functions work, except for one thing - png images. As soon as I call 
 png_create_read_struct, the application will imediately hang and start 
using up all available CPU power. This happens with both libpng10 and 
libpng12.

This is the call we make:
png_structp png_ptr = png_create_read_struct (PNG_LIBPNG_VER_STRING, 
(png_voidp)0, 0, 0);

Anybody who knows anything about it, or knows what more information I 
should provide?

 Thanks /Marco
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