[PATCH] PR fortran/65173 -- kill off old_cl_list from gfc_namespace.

[Steven G. Kargl]

On Fri, Dec 09, 2016 at 01:54:34PM +0200, Janne Blomqvist wrote:
> On Fri, Dec 9, 2016 at 1:47 PM, Paul Richard Thomas
> <paul.richard.thomas@gmail.com> wrote:
>
> I'm seeing the same thing, I guess. Or rather that the ts->type == 81
> which is non-sensical. No idea where that comes from..
> 
> Backtrace from gdb:
> 
> #0  gfc_code2string (m=m@entry=0x182fe00 <bt_types>,
> code=code@entry=81) at ../../trunk-git/gcc/fortran/misc.c:193
> #1  0x000000000065645f in mio_name (t=81, m=m@entry=0x182fe00
> <bt_types>) at ../../trunk-git/gcc/fortran/module.c:1722
> #2  0x000000000065acb9 in mio_name_bt (m=0x182fe00 <bt_types>,
> t=<optimized out>) at ../../trunk-git/gcc/fortran/module.c:2106
> #3  mio_typespec (ts=ts@entry=0x2420918) at
> ../../trunk-git/gcc/fortran/module.c:2530
> #4  0x000000000065ae50 in mio_expr (ep=0x24217d0) at
> ../../trunk-git/gcc/fortran/module.c:3432
> #5  0x000000000065b300 in mio_charlen (clp=clp@entry=0x241fa80) at
> ../../trunk-git/gcc/fortran/module.c:2500
> #6  0x000000000065ad50 in mio_typespec (ts=ts@entry=0x241fa78) at
> ../../trunk-git/gcc/fortran/module.c:2558
> #7  0x000000000065ae50 in mio_expr (ep=ep@entry=0x24208a8) at
> ../../trunk-git/gcc/fortran/module.c:3432
> #8  0x000000000065bb73 in mio_component (c=c@entry=0x2420830,
> vtype=vtype@entry=0) at ../../trunk-git/gcc/fortran/module.c:2799
> #9  0x000000000065bbdb in mio_component_list (cp=cp@entry=0x2422138,
> vtype=0) at ../../trunk-git/gcc/fortran/module.c:2818
> #10 0x000000000065c913 in mio_symbol (sym=sym@entry=0x2422090) at
> ../../trunk-git/gcc/fortran/module.c:4238
> #11 0x000000000065cb8b in write_symbol (n=2, sym=sym@entry=0x2422090)
> at ../../trunk-git/gcc/fortran/module.c:5613
> #12 0x000000000065e87f in write_symbol0 (st=0x2422680) at
> ../../trunk-git/gcc/fortran/module.c:5653
> #13 0x000000000065e7f2 in write_symbol0 (st=0x2420650) at
> ../../trunk-git/gcc/fortran/module.c:5632
> #14 0x000000000065ea03 in write_module () at
> ../../trunk-git/gcc/fortran/module.c:5992
> #15 0x000000000065ec59 in dump_module (name=name@entry=0x7ffff6853060
> "m", dump_flag=dump_flag@entry=1) at
> ../../trunk-git/gcc/fortran/module.c:6120
> #16 0x000000000065edf8 in gfc_dump_module (name=0x7ffff6853060 "m",
> dump_flag=1) at ../../trunk-git/gcc/fortran/module.c:6163
> #17 0x0000000000675edd in gfc_parse_file () at
> ../../trunk-git/gcc/fortran/parse.c:6158
> #18 0x00000000006baa5b in gfc_be_parse_file () at
> ../../trunk-git/gcc/fortran/f95-lang.c:202

Ugh.  I can only reproduce the ICE under valgrind.  There is
some interesting stuff happening in module.c  

-- 
Steve
http://troutmask.apl.washington.edu/~kargl/
https://www.youtube.com/watch?v=6hwgPfCcpyQ