https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97084
Bug ID: 97084
Summary: Openmp + Allocatable String Crashes
Product: gcc
Version: 10.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: wddawson at ucdavis dot edu
Target Milestone: ---
Minimal example
```
program test
implicit none
integer :: ii
integer, parameter :: N = 80
character(len=:), allocatable :: temp_string
allocate(character(len=N) :: temp_string)
!$omp parallel default(shared)
!$omp do
do ii = 1, N
temp_string(ii:ii) = "#"
end do
!$omp end do
!$omp end parallel
end program
```
When I compile with `gfortran main.f90 -fopenmp -o test ` I get the following
error:
```
during GIMPLE pass: omplower
main.f90:9:0:
9 | !$omp parallel default(shared)
|
internal compiler error: in gimplify_expr, at gimplify.c:13885
libbacktrace could not find executable to open
```
It fails with the following compilers:
```
GNU Fortran (Homebrew GCC 10.2.0) 10.2.0
```
```
GNU Fortran (Homebrew GCC 9.3.0) 9.3.0
```
But works with:
```
GNU Fortran (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39)
```
This is possibly related to 89621?
