[Bug bootstrap/14589] New: [tree-ssa] Bootstrap failure on Tru64 UNIX

[Bug bootstrap/14589] New: [tree-ssa] Bootstrap failure on Tru64 UNIX

[gcc-bugzilla at gcc dot gnu dot org]

Bootstrapping the current tree-ssa branch on Tru64 UNIX (both V4.0F and
V5.1B) fails:

/vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/config/alpha/crtfastmath.c:46: 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.
make[2]: *** [crtfastmath.o] Error 1

This happens even when running

$ cc1 crtfastmath.i
Program received signal SIGSEGV, Segmentation fault.
0x00000001204ef634 in expand_call (exp=0x1f310, target=0x0, ignore=1) at /vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/calls.c:2106
(gdb) where
#0  0x00000001204ef634 in expand_call (exp=0x1f310, target=0x0, ignore=1) at /vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/calls.c:2106
#1  0x00000001202d5300 in expand_expr_real_1 (exp=0x1f310, target=0x0, tmode=VOIDmode, modifier=EXPAND_NORMAL, alt_rtl=0x0) at /vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/expr.c:7700
#2  0x00000001202c80a4 in expand_expr_real (exp=0x1f310, target=0x1a400, tmode=VOIDmode, modifier=EXPAND_NORMAL, alt_rtl=0x0) at /vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/expr.c:6423
#3  0x000000012011cd34 in c_objc_common_finish_file () at /vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/c-objc-common.c:253
#4  0x0000000120070310 in finish_file () at /vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/c-lang.c:196
#5  0x000000012010b858 in c_common_parse_file (set_yydebug=0) at /vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/c-opts.c:1244
#6  0x0000000120145ac8 in compile_file () at /vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/toplev.c:1622
#7  0x0000000120148638 in do_compile () at /vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/toplev.c:2618
#8  0x0000000120148724 in toplev_main (argc=2, argv=0x11fffc018) at /vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/toplev.c:2650
#9  0x00000001201436e8 in main (argc=2, argv=0x11fffc018) at /vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/main.c:35

Here's crtfastmath.i:

# 1 "/vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/config/alpha/crtfastmath.c"
# 1 "/vol/gcc/obj/gcc-3.5-tree-ssa-20040312/5.1b-gcc/gcc//"
# 1 "<built-in>"
# 1 "<command line>"
# 1 "/vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/config/alpha/crtfastmath.c"
# 37 "/vol/gnu/src/gcc/gcc-tree-ssa-dist/gcc/config/alpha/crtfastmath.c"
extern void __ieee_set_fp_control (unsigned long int);




static void __attribute__((constructor))
set_fast_math (void)
{
  __ieee_set_fp_control ((1UL<<12) | (1UL<<13));
}

Environment:
System: OSF1 rimsky V4.0 1229 alpha
Machine: alpha
	
host: alpha-dec-osf4.0f
build: alpha-dec-osf4.0f
target: alpha-dec-osf4.0f
configured with: /vol/gnu/src/gcc/gcc-tree-ssa-dist/configure --prefix=/vol/gcc --with-local-prefix=/vol/gcc --disable-nls --enable-languages=c++,java,objc --host alpha-dec-osf4.0f --build alpha-dec-osf4.0f --target alpha-dec-osf4.0f

How-To-Repeat:
Bootstrap tree-ssa branch as above.

-- 
           Summary: [tree-ssa] Bootstrap failure on Tru64 UNIX
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ro at techfak dot uni-bielefeld dot de
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: alpha-dec-osf4.0f
  GCC host triplet: alpha-dec-osf4.0f
GCC target triplet: alpha-dec-osf4.0f


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589

[Bug middle-end/14589] [tree-ssa] Bootstrap failure on Tru64 UNIX

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|bootstrap                   |middle-end
           Keywords|                            |build, ice-on-valid-code
   Target Milestone|---                         |tree-ssa
            Version|unknown                     |tree-ssa


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589

[Bug c/14589] [tree-ssa] Bootstrap failure on Tru64 UNIX

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-03-15 22:16 -------
Confirmed with a cross compiler from powerpc-apple-darwin built at -O0:
0x0039be74 in expand_call (exp=0x410784d8, target=0x0, ignore=1) at ../../gcc/calls.c:2106
2106      int old_inhibit_defer_pop = inhibit_defer_pop;
(gdb) p cfun
$1 = (struct function *) 0x41615800
(gdb) p cfun->expr
During symbol reading, no way to lookup Objective-C classes.
$2 = (struct expr_status *) 0x0

Looks like the issue here is that the C front-end is creating a function by calling expands instead of 
creating a function to do the work.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|middle-end                  |c
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-03-15 22:16:47
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589

[Bug c/14589] [tree-ssa] Bootstrap failure on Tru64 UNIX

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-03-15 22:28 -------
One more thing is that this causes pessimizes code right now.
static void __attribute__((constructor))
temp (void)
{
}
temp should not referenced at all as it is empty.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |pessimizes-code
      Known to fail|                            |tree-ssa
      Known to work|                            |3.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589

[Bug c/14589] [tree-ssa] Bootstrap failure on Tru64 UNIX

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-04-08 20:48 -------
Actually this is no pessimizes-code as the ICE cannot happen on most targets.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|pessimizes-code             |
   Last reconfirmed|2004-03-15 22:16:47         |2004-04-08 20:48:15
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589

[Bug c/14589] [tree-ssa] Bootstrap failure on Tru64 UNIX

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-04-08 20:50 -------
I also think I have a patch to fix this, I am trying it right now.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589

[Bug c/14589] [tree-ssa] Bootstrap failure on Tru64 UNIX

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-04-08 21:09 -------
Created an attachment (id=6065)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=6065&action=view)
Patch which should fix it

This patch removes the tree to RTL lowering from the C front-end and fixes the
bug I think.  Could you try to bootstrap with it?
ChangeLog:
* c-objc-common.c (start_cdtor): Mark function as not public but used.
(c_objc_common_finish_file): Call c_expand_expr_stmt instead of expand_expr.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |pinskia at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589

[Bug c/14589] [tree-ssa] Bootstrap failure on Tru64 UNIX

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-04-09 13:42 -------
Note my patch does exactly how mudflap constructs its c functions in mflang_flush_calls.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589

[Bug c/14589] [tree-ssa] Bootstrap failure on Tru64 UNIX

[ro at techfak dot uni-bielefeld dot de]

------- Additional Comments From ro at techfak dot uni-bielefeld dot de  2004-04-17 03:06 -------
Subject: Re:  [tree-ssa] Bootstrap failure on Tru64 UNIX

pinskia at gcc dot gnu dot org writes:

> bug I think.  Could you try to bootstrap with it?

A bootstrap on alpha-dec-osf4.0f now went past make compare, but fails
later building libmudflap.  I'll report this separately, since it's an
unrelated problem.

Thanks.
	Rainer


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589

[Bug c/14589] [tree-ssa] Bootstrap failure on Tru64 UNIX

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-04-17 05:29 -------
Patch here: <http://gcc.gnu.org/ml/gcc-patches/2004-04/msg01046.html>.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589

[Bug c/14589] [tree-ssa] Bootstrap failure on Tru64 UNIX

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-04-30 00:58 -------
This is also happens on i686-unknown-openbsd while compiling libmudflap.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
  GCC build triplet|alpha-dec-osf4.0f           |
   GCC host triplet|alpha-dec-osf4.0f           |
 GCC target triplet|alpha-dec-osf4.0f           |alpha-dec-osf4.0f, i686-
                   |                            |unknown-openbsd31
   Last reconfirmed|2004-04-08 20:48:15         |2004-04-30 00:58:24
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589

[Bug c/14589] [tree-ssa] Bootstrap failure on Tru64 UNIX

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-05-06 01:52 -------
Note mine anymore, Zack posted a different patch which looks better in my view: 
<http://gcc.gnu.org/ml/gcc-patches/2004-05/msg00318.html>.

Zack this is your "[tree-ssa] Fix C __attribute__ ((constructor)) on 
!have_ctors_dtorstargets" patch.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|pinskia at gcc dot gnu dot  |zack at gcc dot gnu dot org
                   |org                         |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589

[Bug c/14589] [tree-ssa] Bootstrap failure on Tru64 UNIX

[zack at gcc dot gnu dot org]

------- Additional Comments From zack at gcc dot gnu dot org  2004-05-06 01:56 -------
Huh, I had no idea this was causing bootstrap failures.

I'll note that making these functions static is wrong - then collect2 won't be
able to find them.

My patch won't optimize out an empty constructor, but then we weren't doing that
before.  To do it, I think we would have to make the ctors/dtors lists cgraph's
problem, which would probably be a good move, but I'm not doing it.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589

[Bug c/14589] [tree-ssa] Bootstrap failure on Tru64 UNIX

[zack at gcc dot gnu dot org]

------- Additional Comments From zack at gcc dot gnu dot org  2004-05-06 18:06 -------
Patch checked in.  Forgot to mention the PR number in the ChangeLog; it's
http://gcc.gnu.org/ml/gcc-cvs/2004-05/msg00210.html

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589

[Bug c/14589] [tree-ssa] Bootstrap failure on Tru64 UNIX

[ro at techfak dot uni-bielefeld dot de]

------- Additional Comments From ro at techfak dot uni-bielefeld dot de  2004-05-10 13:59 -------
Subject: Re:  [tree-ssa] Bootstrap failure on Tru64 UNIX

zack at gcc dot gnu dot org writes:

> Patch checked in.  Forgot to mention the PR number in the ChangeLog; it's
> http://gcc.gnu.org/ml/gcc-cvs/2004-05/msg00210.html

A bootstrap of the unmodified tree-ssa branch worked for me on
alpha-dec-osf5.1b.

Thanks.
	Rainer


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14589