PNG_USE_RESULT    342 3rdparty/libpng/pngconf.h #      define PNG_USE_RESULT __attribute__((__warn_unused_result__))
PNG_USE_RESULT    366 3rdparty/libpng/pngconf.h #      define PNG_USE_RESULT /* not supported */
PNG_USE_RESULT    389 3rdparty/libpng/pngconf.h #  define PNG_USE_RESULT  /* The result of this function must be checked */