[Bug ipa/63851] [5 Regression] ipa-icf miscompiles gfortran.dg/assumed_rank_(8|9|10).f90 at -O2 and above

["howarth at bromo dot med.uc.edu" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63851

howarth at bromo dot med.uc.edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |howarth at bromo dot med.uc.edu

--- Comment #7 from howarth at bromo dot med.uc.edu ---
(In reply to Martin LiÅka from comment #5)

At r218792, the proposed patch reduces the fortran test suite failures on
x86_64-apple-darwin14 to just...

FAIL: gfortran.dg/assumed_rank_10.f90   -O3 -fomit-frame-pointer -funroll-loops
 execution test
FAIL: gfortran.dg/assumed_rank_10.f90   -O3 -fomit-frame-pointer
-funroll-all-loops -finline-functions  execution test

at -m32 only which appears to backtrace as...

Program aborted. Backtrace:
#0  0x5db1
#1  0x6fcf
#2  0xbcfc7
#3  0x1a8f
#4  0x1bfa

Program received signal SIGABRT, Aborted.
0x95ed369a in __pthread_kill () from /usr/lib/system/libsystem_kernel.dylib
(gdb) bt
#0  0x95ed369a in __pthread_kill () from /usr/lib/system/libsystem_kernel.dylib
#1  0x98817f19 in pthread_kill () from /usr/lib/system/libsystem_pthread.dylib
#2  0x98c72eee in abort () from /usr/lib/system/libsystem_c.dylib
#3  0x00006fb0 in __gfortrani_sys_abort () at
../../../../gcc-5-20141216/libgfortran/runtime/error.c:180
#4  0x000bcfc8 in _gfortran_abort () at
../../../../gcc-5-20141216/libgfortran/intrinsics/abort.c:33
#5  0x00001a90 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Does this imply that we are missing a call to 
compatible_types_p() somewhere that is exposed at -m32 for this particular test
case?