Toolchain doesn't support "Format specifier like %g" in printf

[RRArinc]

Hi, I build the toolchain GCC13 version and able to compile the sample c code as below and observed the following.

// program to printf fixed and float point values

include

int main() { printf( "hello -%g- world -%f-\n", 1.0, 1.0f); return 0; }

Any online GCC compiler provides output as hello -1- world -1.000000-

However riscv32-unknown-elf-gcc compiles and outputs as hello -g- world -1.000000-

Here format specifier %g representing "fixed point" value is not printed correctly, but only prints "floating point" values.

Note: Toolchain is build for bare metal and not Linux flavour.

Any inputs/suggestions are welcome.

Thanks

[TommyMurphyTM1234]

Works for me using the most recent GCC 13.2 CI build:

• https://github.com/riscv-collab/riscv-gnu-toolchain/releases
  • https://github.com/riscv-collab/riscv-gnu-toolchain/releases/tag/2024.09.03
  • https://github.com/riscv-collab/riscv-gnu-toolchain/releases/download/2024.09.03/riscv32-elf-ubuntu-22.04-gcc-nightly-2024.09.03-nightly.tar.gz

    wget https://github.com/riscv-collab/riscv-gnu-toolchain/releases/download/2024.09.03/riscv32-elf-ubuntu-22.04-gcc-nightly-2024.09.03-nightly.tar.gz
    tar xzvf riscv32-elf-ubuntu-22.04-gcc-nightly-2024.09.03-nightly.tar.gz
    cd riscv/bin
    vi test.c
    # Add the code above
    ./riscv32-unknown-elf-gcc test.c -o test
    ./qemu-riscv32 test
    hello -1- world -1.000000-

    You'll probably need to explain in more detail how you're getting/building your toolchain, how you're compiling your code, how you're running your program etc.