https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125720
Bug ID: 125720
Summary: Wrong code: structure constructor copies an
allocatable character array component at the wrong
element stride
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: jvdelisle at gcc dot gnu.org
Target Milestone: ---
A structure constructor that copies an allocatable or deferred-length
character ARRAY expression into an explicit-length allocatable character array
component produces wrong data when the source element length differs from the
component's declared length.
Minimal reproducer:
program p
type t
character(2), allocatable :: c(:)
end type t
type(t) :: x
character(:), allocatable :: d(:)
allocate (character(4) :: d(2))
d = [ "abcd", "efgh" ]
x = t (d)
print *, "[", x%c(1), "][", x%c(2), "]"
end program p
Observed:
[ab][cd]
The second element is "cd" (characters 3-4 of the first source element)
instead of "ef".
Expected:
[ab][ef]
