Sprintf hardfaulting with float input


I'm using the arm-gnu-toolchain-13.2.Rel1-x86_64-arm-none-eabi for a cortex M4 on a TM4C1294NCPDT. I've run into a problem where the chip hard faults when a float is passed to sprintf. sprintf works with other inputs. The code to reproduce this is 

char garb_float[100];
float float_garb = 0.01f;
snprintf(garb_float, 100, "%012.9f", float_garb);

The stack trace is 

#0  FaultISR () at startup_gcc.c:293
#1  <signal handler called>
#2  0x00055084 in _malloc_r ()
#3  0x00056550 in _calloc_r ()
#4  0x00055a1a in _Balloc ()
#5  0x000562a8 in __d2b ()
#6  0x000567a2 in _dtoa_r ()
#7  0x00052fe4 in _svfprintf_r ()
#8  0x000579f4 in snprintf ()
#9  0x00031dd2 in main_MainLoop () at main.c:110
#10 0x000320da in ResetISR () at startup_gcc.c:262

I'm also using the TI libraries for initialization if that helps. Does this toolchain have a function for converting strings to floats? Thank you for any guidance