printf - stm32f4 sprintf don't accepts parameters -


i have problem sprintf function in stm32f4 discovery board. use win 10 32bit , ac6 version 1.14.1.201707031232 code in new project , in standard libraries.

#include "stdio.h" #include "stm32f4xx.h" #include "stm32f4_discovery.h"  char s[200]; int i;  int main(void) {     systeminit();     = 0;     sprintf(s, "text :");     sprintf(s, "text :%d", i);     sprintf(s, "text :");     for(;;); }

in debug , normal execution (in bigger project same instructions) program stops infinite in second sprintf. if sprintf function has no parameters executes normally. try increase heap , stack in linker script no solution. missing in syscalls.c module?

thank in advance.


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