[Bug fortran/102689] New: Segfault with RESHAPE of CLASS as actual argument

[burnus at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102689

            Bug ID: 102689
           Summary: Segfault with RESHAPE of CLASS as actual argument
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: burnus at gcc dot gnu.org
  Target Milestone: ---

Created attachment 51586
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51586&action=edit
testcase - compile & run (fails with segfault at marked line)

Dummy and actual argument are CLASS, then:

   call class_bar (RESHAPE (B, [100]))

will segfault at runtime.  Besides the actual crash, the question is why there
is a call to the library at all:

      _gfortran_reshape_4 (&atmp.25, D.4357, D.4383, 0B, 0B);

At least for most common cases, it looks as if this should be inlined.