[Bug fortran/18890] New: ICE at assign CHARACTER POINTER array to POINTER or ALLOCATABLE one

["naf at naf dot net dot ru" <gcc-bugzilla at gcc dot gnu dot org>]

Example code:
$ cat alloc.f90
INTEGER ERR,N                                                                   
PARAMETER (N=10)                                                                
CHARACTER(LEN=40), POINTER :: vPTR(:)                                           
CHARACTER(LEN=40), ALLOCATABLE :: vALLOC(:)                                     
                                                                                
ALLOCATE(vPTR(N),STAT=ERR)                                                      
ALLOCATE(vALLOC(N),STAT=ERR)                                                    
vALLOC='A'                                                                      
                                                                                
vPTR=vALLOC     ! Line cause compiler error                                     
                                                                                
WRITE(*,*) vPTR                                                                 
DEALLOCATE(vPTR,STAT=ERR)                                                       
DEALLOCATE(vALLOC,STAT=ERR)                                                     
END                                                                             

When compiling it an internal compiler errors arises:

$ /usr/local/bin/gfortran/irun/bin/gfortran -static -v --save-temps alloc.f90
Driving: /usr/local/bin/gfortran/irun/bin/gfortran -static -v -save-temps
alloc.f90 -lgfortranbegin -lgfortran -lm
Reading specs from
/usr/local/bin/gfortran/irun/bin/../lib/gcc/i686-pc-linux-gnu/4.0.0/specs
Configured with: ../gcc/configure --enable-languages=c,f95
--prefix=/usr/work/2004343/irun
Thread model: posix
gcc version 4.0.0 20041208 (experimental)
 /usr/local/bin/gfortran/irun/bin/../libexec/gcc/i686-pc-linux-gnu/4.0.0/f951
alloc.f90 -quiet -dumpbase alloc.f90 -mtune=pentiumpro -auxbase alloc -version
-o alloc.s
GNU F95 version 4.0.0 20041208 (experimental) (i686-pc-linux-gnu)
        compiled by GNU C version 4.0.0 20041202 (experimental).
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
alloc.f90: In function 'MAIN__':
alloc.f90:11: internal compiler error: in gfc_trans_scalar_assign, at
fortran/trans-expr.c:2005
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.


ICE appears with CHARACTER type, REAL or INTEGER seems ok.
ICE appears only with POINTER to POINTER or mixed POINTER to/from 
ALLOCATABLE arrays assigning, ALLOCATABLE to ALLOCATABLE have works.

-- 
           Summary: ICE at assign CHARACTER POINTER array to POINTER or
                    ALLOCATABLE one
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: naf at naf dot net dot ru
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18890