png_set_crc_action 26 third_party/libpng/pngrtran.c png_set_crc_action(png_structp png_ptr, int crit_action, int ancil_action) png_set_crc_action 377 third_party/libpng/pngusr.h #define png_set_crc_action wk_png_set_crc_action