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118 
int num1 = 3;
int num2 = 2;
int num3 = 0;
int num4 = 10;
int num5 = 0;
    
void setup() {
    num5 = (num1 + num2 / num3) + num4;
    Serial.begin(9600);
}

void loop() {
    Serial.println(num5);
    delay(1000);
}

##output

13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13

EDIT: I was expecting a SOS and 5 blinks for Usage Fault: detects execution of undefined instructions, unaligned memory access for load/store multiple. When enabled, divide-by-zero and other unaligned memory accesses are also detected. But In the light of transparency I posted the result as-is... and I added a github issue to fix this :wink:

Other expected error codes can be found here: http://support.particle.io/hc/en-us/articles/204357864-Flashing-Red

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