https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117763
Bug ID: 117763
Summary: [15.0 regression] segmentation fault through
allocatable char arrays (?)
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: juergen.reuter at desy dot de
Target Milestone: ---
Created attachment 59687
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59687&action=edit
Reproducer, ca. 830 lines
The following regression has been introduced very likely between Nov 11 and Nov
18, triggering our CI with the newest gcc/gfortran version.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Program received signal SIGSEGV, Segmentation fault.
0x000000000040b243 in iso_varying_string::len_ (string=<error reading variable:
Location address is not set.>) at main_ut.f90:55
55 if(ALLOCATED(string%chars)) then
(gdb) bt
#0 0x000000000040b243 in iso_varying_string::len_ (string=<error reading
variable: Location address is not set.>) at main_ut.f90:55
#1 models::model_append_field_vars (model=...) at main_ut.f90:776
#2 0x000000000040c48c in main_ut () at main_ut.f90:797
The reproducer is attached, I'll try to reduce it even further.
