Hi Guys very short. prog.c #include <stdio.h> int main() { float a=1.283; while(1) printf( "%f", a ); } run with $ ./prog.exe >/dev/null in windows monitor process the process increase it's memory it arrive to many Gb. It's not a machine problem, other PC have same problem. Same program in wsl and MSYS2 works well! Regards natanb