PNG_NUMBER_BUFFER_SIZE 1778 png.c                   char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114*/
PNG_NUMBER_BUFFER_SIZE  258 pngerror.c        char buffer[PNG_NUMBER_BUFFER_SIZE];
PNG_NUMBER_BUFFER_SIZE  268 pngerror.c        char buffer[PNG_NUMBER_BUFFER_SIZE];