Issues with converting float to string with sprintf

Troubleshooting
18

yep, is it working well for you?

Here’s a minimal example that breaks:

clone repo at this commit, then run

<...>firmware-develop/modules > make clean all PLATFORM=photon

then given this:

//sprintftest.cpp
#include "application.h"

char thing[16];

void setup() {
}

void loop() {
	sprintf(thing, "testing%d", 123);
}

run

<...>firmware-develop/main > make clean all PLATFORM=photon APP=sprintftest

Here’s the error I get:

  <...>firmware-develop/main >make clean all PLATFORM=photon APP=sprintftest
    `sprintf' referenced in section `.text.module_user_loop' of /var/folders/c1/dt61zfs90816tqlxt_9s76m40000gn/T//cci2Dim1.ltrans0.ltrans.o: defined in discarded section `.text' of rt_dynalib.o (symbol from plugin)
    collect2: error: ld returned 1 exit status
    make[1]: *** [../../../build/target/user-part/platform-6-m-lto/applications/sprintftest/sprintftest.elf] Error 1
    make: *** [modules/photon/user-part] Error 2