I was having trouble running fortran code, so I tried an example code in here:

program read_val
  integer value
  character(len=10) string, string2
  string = '154'

  ! Convert a string to a numeric value
  read (string,'(I10)') value
  print *, value

  ! Convert a value to a formatted string
  write (string2,'(I10)') value
  print *, string2
end program read_val


gfortran -o hello3 hello3.f -g3 -fcheck = all -Wall -fbacktrace




Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:
#0  0x103eab35c
#1  0x103eaa6f3
#2  0x7fff7376cb5c
#3  0x103fef340
#4  0x103fefd2d
#5  0x103fed78f
#6  0x103ea5cca
#7  0x103ea5e96
Segmentation fault: 11

我以某种方式感觉到我的gfortran编译器无法正常工作。我不熟悉Mac OS,感觉像Xcode / Anaconda / etc弄乱了我的系统。

我正在使用GNU Fortran(Homebrew GCC 9.3.0_1)9.3.0,MacOS Mojave 10.14.6。

gfortran path is /usr/local/bin/gfortran Currently my gfortran is from 'brew install gcc'. I also tried manual download from, but it didn't worked either.