QEMU and floating point - QEMU seems to stop

Question

I'm writing some code for a small kernel. I'm using QEMU to test the result:

qemu-system-x86_64 -enable-kvm -m 2048 -cpu host,+topoext -smp cores=8 -cdrom $(ISO_FILE) -vga cirrus -serial file:tmp/qemu-log.txt -D ./tmp/qemu-debug.txt -d in_asm &

With any double or float declaration (!) in the code:

double blabla = 1.23;

the emulation just stops in front of the declaration.

I removed the double declaration:

//double blabla = 1.23;

and the processing runs to the end as expected.

I tried adding flag to QEMU such as

+fpu

but without the expected result (code to be emulated with floating point declaration.