Segmentation fault when compiling with avr-gcc 5.4.0

[DiscordiaBR]

code bug :

Arduino: 1.8.9 (Windows Store 1.8.21.0) (Windows 10), Placa:"Arduino/Genuino Uno"

In function 'global constructors keyed to 65535_0_testes.ino.cpp.o':

lto1.exe: internal compiler error: Segmentation fault

Please submit a full bug report,

with preprocessed source if appropriate.

See <http://gcc.gnu.org/bugs.html> for instructions.

lto-wrapper.exe: fatal error: C:\Program Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\tools\avr/bin/avr-gcc returned 1 exit status

compilation terminated.

c:/program files/windowsapps/arduinollc.arduinoide_1.8.21.0_x86__mdqgnx93n4wtt/hardware/tools/avr/bin/../lib/gcc/avr/5.4.0/../../../../avr/bin/ld.exe: error: lto-wrapper failed

collect2.exe: error: ld returned 1 exit status

exit status 1
Erro compilando para a placa Arduino/Genuino Uno

Este relatório teria mais informações com
"Mostrar a saida detalhada durante a compilação"
opção pode ser ativada em "Arquivo -> Preferências"**

FILE:

char a;
String b;
int c;
boolean leituraRealizada = false;

boolean banho[21] = { false, true, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false};
boolean obras[21] = { false,false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false};

byte Qual_Livre(byte NBOX,byte FN);

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println ("iniciado");

}

void loop() {
  // put your main code here, to run repeatedly:
    while (Serial.available()){
    a = Serial.read();
    b = b + a;
    leituraRealizada = true;
    }
  delay(100);
  if (leituraRealizada){
    Serial.print("codigo lido ");
    Serial.print(b);
    c = Qual_Livre(0,0);
    
    Serial.println(c);
    
    leituraRealizada = false;
    b = "";
  }
  
}
byte Qual_Livre(byte NBOX,byte FN){
  // FN 0 Ler qual Banheiro esta livre.
  // FN 1 Alterar estado do banheiro.
  if (FN == 0){
    byte QL0;
    boolean NF = true;
    QL0 = 1;
    while (NF){
      if(banho[QL0] == false || obras[QL0] == false){
        NF = false;
      }else{
        if (QL0 < 21){
          QL0 + 1;
        }else{
          QL0 = 0;
        }
      }
    }
    return QL0;
  }
  if (FN == 1) {
    if (obras[NBOX]){
      obras[NBOX] = false; 
      return 0;
    }else {
      obras[NBOX] = true;
      return 1;
    }
  }
}

[per1234]

Closing as duplicate of #7949 and #9399