pngtest_debug2   1384 pngtest.c               pngtest_debug2("Allocating row buffer (pass %d, y = %u)...", pass, y);
pngtest_debug2   1388 pngtest.c               pngtest_debug2("\t0x%08lx (%u bytes)", (unsigned long)row_buf,
pngtest_debug2   1409 pngtest.c               pngtest_debug2("Freeing row buffer (pass %d, y = %u)", pass, y);