Why is the delay instruction causing a compiler error? - arduino

Question

Compiler throw an error when I added delay(timer) in the code, timer is a const integer defined at the beginning of the code.
When I comment out the delay line, the compiler completes successfully.
4th line from the bottom
// Include RadioHead Amplitude Shift Keying Library
#include <RH_ASK.h>
// Include dependant SPI Library
#include <SPI.h>
// Create Amplitude Shift Keying Object
RH_ASK rf_driver;
const int BLUE = 3; // the number of the pushbutton pin
const int GREEN = 4; // the number of the LED pin
const int RED = 5; // the number of the LED pin
const int thisPin = 4;
const int timer = 100;
// the setup function runs once when you press reset or power the board
void setup() {
// Initialize ASK Object
rf_driver.init();
Serial.begin(9600);
// initialize digital pin LED_BUILTIN as an output.
pinMode(RED, OUTPUT);
pinMode(GREEN, OUTPUT);
pinMode(BLUE, OUTPUT);
}
// the loop function runs over and over again forever
void loop() {
int mesg = 0;
// Set buffer to size of expected message
uint8_t buf[8];
uint8_t buflen = sizeof(buf);
if (rf_driver.recv(buf, &buflen)) {
// Message received with valid checksum
Serial.print("Message Received: ");
Serial.println((char*)buf);
mesg = 1;
}
if (mesg == 1) {
mesg = 0;
digitalWrite(thisPin, HIGH);
//delay(timer);
digitalWrite(thisPin, LOW);
}
}
Below is the error message:
C:\Users\Swee-Chuan Khoo\Documents\Arduino\libraries\RadioHead\RH_ASK.cpp: In member function 'setModeIdle.constprop':
C:\Users\Swee-Chuan Khoo\Documents\Arduino\libraries\RadioHead\RH_ASK.cpp:421:1: 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
Error compiling for board Arduino Nano.

Answer 1

Downgrade AVR core to 1.6.21 as suggested by Juraj. All working properly now.
Now i can continue with the project.
Thank you everyone for the help, datafiddler, Juraj and M.R.