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[Bug fortran/25018] New: Segfault with simple expression


schluter@pcl247d:~/src/work> cat const.f90
module const
  real(8), parameter :: g = - sqrt(2._8) * Gf
end module const
schluter@pcl247d:~/src/work> ../gcc/build/gcc/f951 const.f90
const.f90:0: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
schluter@pcl247d:~/src/work> 
The uninitialized variable is necessary for the segfault.  In the debugger:
(gdb) run const.f90
Starting program: /home/pcl331/schluter/src/gcc/build/gcc/f951 const.f90

Program received signal SIGSEGV, Segmentation fault.
0x0805efad in check_inquiry (e=0x8695ad0) at ../../gcc/fortran/expr.c:1382
1382   name = e->symtree->n.sym->name;
(gdb) bt
#0  0x0805efad in check_inquiry (e=0x8695ad0) at ../../gcc/fortran/expr.c:1382
#1  0x0806082b in check_init_expr (e=0x8695ad0) at
../../gcc/fortran/expr.c:1443
#2  0x0805edc6 in check_intrinsic_op (e=0x8695b28, check_function=0x80607c0
<check_init_expr>)
    at ../../gcc/fortran/expr.c:1284
#3  0x0806081d in check_init_expr (e=0x8695b28) at
../../gcc/fortran/expr.c:1434
#4  0x0805ed32 in check_intrinsic_op (e=0x8695c78, check_function=0x80607c0
<check_init_expr>)
    at ../../gcc/fortran/expr.c:1250
#5  0x0806081d in check_init_expr (e=0x8695c78) at
../../gcc/fortran/expr.c:1434
#6  0x0805ed32 in check_intrinsic_op (e=0x8695cd0, check_function=0x80607c0
<check_init_expr>)
    at ../../gcc/fortran/expr.c:1250
#7  0x0806081d in check_init_expr (e=0x8695cd0) at
../../gcc/fortran/expr.c:1434
#8  0x08060a52 in gfc_match_init_expr (result=0xbfffed64) at
../../gcc/fortran/expr.c:1543
#9  0x08059f00 in variable_decl (elem=Variable "elem" is not available.
) at ../../gcc/fortran/decl.c:1209
#10 0x0805aa82 in gfc_match_data_decl () at ../../gcc/fortran/decl.c:2240
#11 0x0807ec0a in match_word (str=Variable "str" is not available.
) at ../../gcc/fortran/parse.c:65
#12 0x0807ed1d in decode_statement () at ../../gcc/fortran/parse.c:134
#13 0x0807f745 in next_statement () at ../../gcc/fortran/parse.c:358
#14 0x08080a5b in parse_spec (st=ST_NONE) at ../../gcc/fortran/parse.c:1556
#15 0x080815f9 in gfc_parse_file () at ../../gcc/fortran/parse.c:2501
#16 0x0809cadd in gfc_be_parse_file (set_yydebug=0) at
../../gcc/fortran/f95-lang.c:286
#17 0x0836cf40 in toplev_main (argc=2, argv=0xbfffefd4) at
../../gcc/toplev.c:990
#18 0x080c766f in main (argc=Cannot access memory at address 0x0
) at ../../gcc/main.c:35
(gdb)


-- 
           Summary: Segfault with simple expression
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tobi at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25018


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