#3746 Undefined Global '___fs2ulonglong'

[Dmitry Kharitonov]

volatile uint64_t d=0;
    d+=1e18;

linking with error

sdcc -v
SDCC : mcs51/z80/z180/r2k/r2ka/r3ka/sm83/tlcs90/ez80_z80/z80n/r800/ds390/pic16/pic14/TININative/ds400/hc08/s08/stm8/pdk13/pdk14/pdk15/mos6502/mos65c02 TD-4.4.0
 #14620 (MINGW64)
published under GNU General Public License (GPL)

sdcc -mmcs51 --opt-code-size --model-small --Werror --no-xinit-opt --std-sdcc99 main.c

?ASlink-Warning-Undefined Global '___fs2ulonglong' referenced by module 'main'

[Benedikt Freisen]

Could be related to [bugs:#3798].