https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80850
--- Comment #11 from DIL <liakhdi at ornl dot gov> --- The additional problem you observe with gfortran/7.1 described in the comment "2017-05-26 22:43:21 UTC" seems to be another gfortran compiler bug introduced in GCC/7.0. I have just filed a bug report for it (#81758). To my current understanding, it is not related to this (potential) bug report which is observed with GCC/5.x and GCC/6.x. Also, in the context of the current bug report, for more convenience I have isolated the problematic section of my code in a separate few-line procedure that can be found in stsubs.F90 line 275 (function clone_object). I still observe the same wrong behavior: Sourced allocate() returns "Attempt to allocated and allocated object" on an explicitly dissociated pointer (meaning allocation status is Unallocated). Additionally, I ran more tests on different platforms and here is the statistics: a) The sourced allocation crash I observe is non-deterministic; b) It is more likely to appear in the "-O0 -g" build than in "-O3"; c) It disappears in GDB; d) It always crashes on Mac; e) It crashes ~ 50% of times on Ubuntu Linux; f) It does not crash on some platforms with RedHat Linux. The code repo is the same: https://github.com/DmitryLyakh/GFC.git or https://gitlab.com/DmitryLyakh/GFC.git Any response or comment would be highly appreciated! Thanks.
