[Bug c/120604] New: runtime error in i386/i386-expand.cc:3612:

[dcb314 at hotmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120604

            Bug ID: 120604
           Summary: runtime error in i386/i386-expand.cc:3612:
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

I just tried a bootstrap with flags "-g -O3 -march=znver3"
with ASAN and UBSAN switched on and got the following:

trunk/gcc/config/i386/i386-expand.cc:3612:12: runtime error: signed integer
overflow: -577719751371849729 - 8646911284551352320 cannot be represented in
type 'long int'

The source code line is

      diff = ct - cf;

After a full git download, git blame says:

2bf6d93547e5 gcc/config/i386/i386-expand.c  (Martin Liska            
2019-05-06 09:18:26 +0200  3612)       diff = ct - cf;