[Bug fortran/100149] New: Seg fault passing to CHARACTER(*), DIMENSION(*), INTENT(IN), OPTIONAL

[Bug fortran/100149] New: Seg fault passing to CHARACTER(*), DIMENSION(*), INTENT(IN), OPTIONAL

[brtnfld at hdfgroup dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100149

            Bug ID: 100149
           Summary: Seg fault passing to CHARACTER(*), DIMENSION(*),
                    INTENT(IN), OPTIONAL
           Product: gcc
           Version: 10.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: brtnfld at hdfgroup dot org
  Target Milestone: ---

Created attachment 50631
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50631&action=edit
The program has two lines of doing that same thing,  the lines are marked which
fail.

The attached program fails with:

Program received signal SIGSEGV, Segmentation fault.
0x00001555543c783f in __memmove_sse2_unaligned_erms () from /lib64/libc.so.6

The program worked with 10.1.0 (and 9.3.1, 7.5.0) and fails with 10.2.0

[Bug fortran/100149] Seg fault passing to CHARACTER(*), DIMENSION(*), INTENT(IN), OPTIONAL

[kargl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100149

kargl at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kargl at gcc dot gnu.org

--- Comment #1 from kargl at gcc dot gnu.org ---
Update 11 when it is available.  I get

% gfcx -o z -O a.f90
% ./z
 Zone_t              
 Zone_t
 Zone_t

[Bug fortran/100149] Seg fault passing to CHARACTER(*), DIMENSION(*), INTENT(IN), OPTIONAL

[brtnfld at hdfgroup dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100149

--- Comment #2 from Scot Breitenfeld <brtnfld at hdfgroup dot org> ---
Thanks for the update; it is good to know that it was fixed in 11.0. I also
tried it with GCC master (4.20.2021), and it worked. This is for an open-source
library (CGNS), and it is a commonly used API; it is a show-stopper bug.

Thanks again.

[Bug fortran/100149] Seg fault passing to CHARACTER(*), DIMENSION(*), INTENT(IN), OPTIONAL

[brtnfld at hdfgroup dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100149

Scot Breitenfeld <brtnfld at hdfgroup dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |10.3.0
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from Scot Breitenfeld <brtnfld at hdfgroup dot org> ---
For future reference, gfortran 10.3.0 does not have this issue. I've updated
the Known to work.

The bug report can be closed.

[Bug fortran/100149] Seg fault passing to CHARACTER(*), DIMENSION(*), INTENT(IN), OPTIONAL

[sgk at troutmask dot apl.washington.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100149

--- Comment #4 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Wed, Apr 21, 2021 at 03:48:24PM +0000, brtnfld at hdfgroup dot org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100149
> 
> --- Comment #3 from Scot Breitenfeld <brtnfld at hdfgroup dot org> ---
> For future reference, gfortran 10.3.0 does not have this issue. I've updated
> the Known to work.
> 
> The bug report can be closed.
> 

Thanks for checking 10.3.0.  Apologies about the inconvenience.