[Flang] The variable outputted in the compilation error message is invalid

[ohno-fj]

Version of flang : 21.0.0(7500cead4e000d82d62f99f2896ffa94ee08ff7e)/AArch64

In the attached program, the second and third compilation messages are outputted with %s instead of variable (i).

The following are the test program and Flang compilation result.

snfm_import_err02_2.f90:

program main
  call test01()
  print *,"pass"
end program main

module mod1
  integer :: i
end module mod1

module mod2
  real    :: i
end module mod2

subroutine test01()
  use mod2
  use mod1
  interface
     subroutine subb()
       use mod1
       import i
     end subroutine subb
  end interface
end subroutine test01

$ flang snfm_import_err02_2.f90
error: Semantic errors in snfm_import_err02_2.f90
./snfm_import_err02_2.f90:20:15: error: A distinct 'i' is already present in this scope
         import i
                ^
./snfm_import_err02_2.f90:7:14: Previous declaration of '%s'
    integer :: i
               ^
./snfm_import_err02_2.f90:11:14: Declaration of '%s' in host scope
    real    :: i
               ^
$

[llvmbot]

@llvm/issue-subscribers-flang-frontend

Author: None (ohno-fj)

``` Version of flang : 21.0.0(7500cea)/AArch64 ```

In the attached program, the second and third compilation messages are outputted with %s instead of variable (i).

The following are the test program and Flang compilation result.

snfm_import_err02_2.f90:

program main
  call test01()
  print *,"pass"
end program main

module mod1
  integer :: i
end module mod1

module mod2
  real    :: i
end module mod2

subroutine test01()
  use mod2
  use mod1
  interface
     subroutine subb()
       use mod1
       import i
     end subroutine subb
  end interface
end subroutine test01

$ flang snfm_import_err02_2.f90
error: Semantic errors in snfm_import_err02_2.f90
./snfm_import_err02_2.f90:20:15: error: A distinct 'i' is already present in this scope
         import i
                ^
./snfm_import_err02_2.f90:7:14: Previous declaration of '%s'
    integer :: i
               ^
./snfm_import_err02_2.f90:11:14: Declaration of '%s' in host scope
    real    :: i
               ^
$