libpng issues

Fri Nov 12 13:55:00 GMT 2004

Gerrit P. Haase wrote:
> Marco Alanen wrote:
>>> 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?
>>> Simple testcase (compilable snippet), please?
>> Gerrit

Some simple code:
#include <stdio.h>
#include <png.h>
int main(int argc, char **argv)
{
 png_structp png_ptr = png_create_read_struct 			 
(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
 return 0;
}
Compiled with:
gcc -o pngtest pngtest.c -mno-cygwin -mwin32 -mwindows -lpng
 Thanks /Marco
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