I need to use sprintf with floating point numbers (%f format specifier) in
a project based on rpmsg_lite_str_echo_rtos on the cortex-M (NXP Processor).
I use the recommended
arm-gnu-toolchain-12.3.rel1-mingw-w64-i686-arm-none-eabi
I see that when I call

sprintf(str, "%d" 3);

the number 3 is printed to the string str.

But if I have a floating point number and I use "%f" format specifier

sprintf(str, "%f" 3.5);

I get
ASSERT ERROR " Balloc succeeded ": file
"/data/jenkins/workspace/GNU-toolchain/arm-12/src/newlib-cygwin/newlib/libc/stdlib/mprec.c"
Line "783" function name ""

It seems similar to this error
forum.pjrc.com/index.php
<https://forum.pjrc.com/index.php?threads/strange-compiling-problem-assertion-balloc-succeeded-failed-file-data-jenkins-w.72798/>
that points to this fix
github.com/.../f88aece242178ff0c187d56e34a79645fbc44a23
<https://github.com/zephyrproject-rtos/newlib-cygwin/commit/f88aece242178ff0c187d56e34a79645fbc44a23>

Is there a way to have sprintf working with floating point numbers?

Thanks