[Bug fortran/67451] [5/6 Regression] [F08] ICE with sourced allocation from coarray.

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67451

--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> gfortran.dg/coarray_allocate_3.f08 crashed with an invalid free()
> on s390 and s390x.

If the test is compiled with -fsanitize=address, I get

==19013==ERROR: AddressSanitizer: global-buffer-overflow on address
0x00010ef2e1d8 at pc 0x00010ef2d1dd bp 0x7fff50cd32f0 sp 0x7fff50cd32e8
WRITE of size 8 at 0x00010ef2e1d8 thread T0
    #0 0x10ef2d1dc in MAIN__ (a.out+0x1000011dc)
    #1 0x10ef2d79e in main (a.out+0x10000179e)
    #2 0x7fff8c7695ac in start (libdyld.dylib+0x35ac)
    #3 0x0  (<unknown module>)

0x00010ef2e1d8 is located 0 bytes to the right of global variable
'some_local_object' defined in
'/opt/gcc/_clean/gcc/testsuite/gfortran.dg/coarray_allocate_3.f08:15'
(0x10ef2e1a0) of size 56
SUMMARY: AddressSanitizer: global-buffer-overflow (a.out+0x1000011dc) in MAIN__
Shadow bytes around the buggy address:
  0x100021de5be0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x100021de5bf0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x100021de5c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x100021de5c10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f9 f9
  0x100021de5c20: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 f9 f9
=>0x100021de5c30: f9 f9 f9 f9 00 00 00 00 00 00 00[f9]f9 f9 f9 f9
  0x100021de5c40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x100021de5c50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x100021de5c60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x100021de5c70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x100021de5c80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
...