viewflif.c:168:94: warning: format specifies type 'long' but the argument has type 'long long' [-Wformat]
sprintf(title,"FLIF image decoded at %ux%u [read %" PRId64 " bytes, quality=%.2f%%]",w,h,(long long int) bytes_read, 0.01*quality);
~~~~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
clang-8 complains: