* [Bug c++/16905] ICE (segfault) while compiling with -funit-at-a-time
2004-08-06 21:02 [Bug c++/16905] New: ICE (segfault) while compiling with -funit-at-a-time rjpeters at klab dot caltech dot edu
@ 2004-08-06 21:06 ` rjpeters at klab dot caltech dot edu
2004-08-06 21:06 ` rjpeters at klab dot caltech dot edu
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: rjpeters at klab dot caltech dot edu @ 2004-08-06 21:06 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Attachment #6897|text/plain |text/x-c++
mime type| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16905
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug c++/16905] ICE (segfault) while compiling with -funit-at-a-time
2004-08-06 21:02 [Bug c++/16905] New: ICE (segfault) while compiling with -funit-at-a-time rjpeters at klab dot caltech dot edu
2004-08-06 21:06 ` [Bug c++/16905] " rjpeters at klab dot caltech dot edu
@ 2004-08-06 21:06 ` rjpeters at klab dot caltech dot edu
2004-08-06 22:38 ` rjpeters at klab dot caltech dot edu
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: rjpeters at klab dot caltech dot edu @ 2004-08-06 21:06 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From rjpeters at klab dot caltech dot edu 2004-08-06 21:06 -------
Created an attachment (id=6897)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=6897&action=view)
triggers ICE when compiled with g++-3.4.1 -O1 -funit-at-a-time
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16905
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug c++/16905] ICE (segfault) while compiling with -funit-at-a-time
2004-08-06 21:02 [Bug c++/16905] New: ICE (segfault) while compiling with -funit-at-a-time rjpeters at klab dot caltech dot edu
2004-08-06 21:06 ` [Bug c++/16905] " rjpeters at klab dot caltech dot edu
2004-08-06 21:06 ` rjpeters at klab dot caltech dot edu
@ 2004-08-06 22:38 ` rjpeters at klab dot caltech dot edu
2004-08-06 23:23 ` [Bug c++/16905] [3.4 regression] ICE (segfault) with exceptions reichelt at gcc dot gnu dot org
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: rjpeters at klab dot caltech dot edu @ 2004-08-06 22:38 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From rjpeters at klab dot caltech dot edu 2004-08-06 22:37 -------
Still get the ICE with the gcc-3.4-20040730 snapshot:
~/local/gcc-3.4-20040730/bin/g++-3.4-20040730 -v -c fail.C -O1 -funit-at-a-time
Reading specs from
/home/rjpeters/local/gcc-3.4-20040730/lib/gcc/i686-pc-linux-gnu/3.4.2/specs
Configured with: /home/rjpeters/build/gcc-3.4-20040730/configure
--prefix=/home/rjpeters/local/gcc-3.4-20040730 --program-suffix=-3.4-20040730
--enable-shared --enable-threads=posix --enable-checking --with-system-zlib
--enable-__cxa_atexit --enable-languages=c,c++
Thread model: posix
gcc version 3.4.2 20040730 (prerelease)
/home/rjpeters/local/gcc-3.4-20040730/libexec/gcc/i686-pc-linux-gnu/3.4.2/cc1plus
-quiet -v -D_GNU_SOURCE fail.C -quiet -dumpbase fail.C -mtune=pentiumpro
-auxbase fail -O1 -version -funit-at-a-time -o /tmp/cc3o4bhc.s
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory
"/home/rjpeters/local/gcc-3.4-20040730/lib/gcc/i686-pc-linux-gnu/3.4.2/../../../../i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/home/rjpeters/local/gcc-3.4-20040730/lib/gcc/i686-pc-linux-gnu/3.4.2/../../../../include/c++/3.4.2
/home/rjpeters/local/gcc-3.4-20040730/lib/gcc/i686-pc-linux-gnu/3.4.2/../../../../include/c++/3.4.2/i686-pc-linux-gnu
/home/rjpeters/local/gcc-3.4-20040730/lib/gcc/i686-pc-linux-gnu/3.4.2/../../../../include/c++/3.4.2/backward
/home/rjpeters/local/gcc-3.4-20040730/include
/home/rjpeters/local/gcc-3.4-20040730/lib/gcc/i686-pc-linux-gnu/3.4.2/include
/usr/include
End of search list.
GNU C++ version 3.4.2 20040730 (prerelease) (i686-pc-linux-gnu)
compiled by GNU C version 3.4.2 20040730 (prerelease).
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
fail.C: In function `void crash()':
fail.C:57: 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.
And here's a backtrace from the gcc-3.4-20040730 snapshot:
gdb ~/local/gcc-3.4-20040730/libexec/gcc/i686-pc-linux-gnu/3.4.2/cc1plus
GNU gdb Red Hat Linux (6.0post-0.20040223.19rh)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-redhat-linux-gnu"...Using host libthread_db
library "/lib/tls/libthread_db.so.1".
(gdb) run -quiet -v -D_GNU_SOURCE fail.C -quiet -dumpbase fail.C
-mtune=pentiumpro -auxbase fail -O1 -version -funit-at-a-time -o /tmp/ccRi6UqC.s
Starting program:
/home/rjpeters/local/gcc-3.4-20040730/libexec/gcc/i686-pc-linux-gnu/3.4.2/cc1plus
-quiet -v -D_GNU_SOURCE fail.C -quiet -dumpbase fail.C -mtune=pentiumpro
-auxbase fail -O1 -version -funit-at-a-time -o /tmp/ccRi6UqC.s
Error while mapping shared library sections:
: Success.
Error while reading shared library symbols:
: No such file or directory.
Error while reading shared library symbols:
: No such file or directory.
Error while reading shared library symbols:
: No such file or directory.
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory
"/home/rjpeters/local/gcc-3.4-20040730/lib/gcc/i686-pc-linux-gnu/3.4.2/../../../../i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/home/rjpeters/local/gcc-3.4-20040730/lib/gcc/i686-pc-linux-gnu/3.4.2/../../../../include/c++/3.4.2
/home/rjpeters/local/gcc-3.4-20040730/lib/gcc/i686-pc-linux-gnu/3.4.2/../../../../include/c++/3.4.2/i686-pc-linux-gnu
/home/rjpeters/local/gcc-3.4-20040730/lib/gcc/i686-pc-linux-gnu/3.4.2/../../../../include/c++/3.4.2/backward
/home/rjpeters/local/gcc-3.4-20040730/include
/home/rjpeters/local/gcc-3.4-20040730/lib/gcc/i686-pc-linux-gnu/3.4.2/include
/usr/include
End of search list.
GNU C++ version 3.4.2 20040730 (prerelease) (i686-pc-linux-gnu)
compiled by GNU C version 3.4.2 20040730 (prerelease).
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Program received signal SIGSEGV, Segmentation fault.
loop_optimize (f=0xf6e697c0, dumpfile=0xffffffa3, flags=10)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/loop.c:2774
2774 current_loop->vtop = insn;
(gdb) bt
#0 loop_optimize (f=0xf6e697c0, dumpfile=0xffffffa3, flags=10)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/loop.c:2774
#1 0x083a12ee in rest_of_handle_loop_optimize (decl=0x0, insns=0xf6e697c0)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/toplev.c:3051
#2 0x083a18be in rest_of_compilation (decl=0xf6d6d0d8)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/toplev.c:3329
#3 0x083eecfb in tree_rest_of_compilation (fndecl=0xf6d6d0d8, nested_p=false)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/tree-optimize.c:168
#4 0x08128744 in expand_body (fn=0xf6d6d0d8)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cp/semantics.c:2932
#5 0x083f0b39 in cgraph_expand_function (node=0xf6d6d6c0)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cgraphunit.c:538
#6 0x083f2779 in cgraph_optimize ()
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cgraphunit.c:1542
#7 0x080d703b in finish_file ()
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cp/decl2.c:2850
#8 0x083a3edd in toplev_main (argc=4294967203, argv=0xfefad7bc)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/toplev.c:1822
#9 0x0817cf6e in main (argc=-93, argv=0xffffffa3)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/main.c:35
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16905
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug c++/16905] [3.4 regression] ICE (segfault) with exceptions
2004-08-06 21:02 [Bug c++/16905] New: ICE (segfault) while compiling with -funit-at-a-time rjpeters at klab dot caltech dot edu
` (2 preceding siblings ...)
2004-08-06 22:38 ` rjpeters at klab dot caltech dot edu
@ 2004-08-06 23:23 ` reichelt at gcc dot gnu dot org
2004-08-06 23:42 ` rjpeters at klab dot caltech dot edu
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2004-08-06 23:23 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From reichelt at gcc dot gnu dot org 2004-08-06 23:23 -------
Confirmed.
Here's something slightly smaller that crashed when compiled with "g++ -O"
(regardless of using -funit-at-a-time or -fno-unit-at-a-time).
==================================================
int foo();
inline void bar() throw() {}
struct A
{
A()
{
int i=foo();
if (i)
{
try { while (i) ; }
catch (...) { while (true) ; }
}
i=0;
}
};
struct B
{
~B() { while (true) ; }
};
A* p;
void baz()
{
p=new A;
B b;
bar();
}
==================================================
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |reichelt at gcc dot gnu dot
| |org
Severity|normal |critical
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Keywords| |ice-on-valid-code, monitored
Known to fail| |3.4.0 3.4.1
Known to work| |3.3.4 3.5.0
Last reconfirmed|0000-00-00 00:00:00 |2004-08-06 23:23:12
date| |
Summary|ICE (segfault) while |[3.4 regression] ICE
|compiling with -funit-at-a- |(segfault) with exceptions
|time |
Target Milestone|--- |3.4.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16905
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug c++/16905] [3.4 regression] ICE (segfault) with exceptions
2004-08-06 21:02 [Bug c++/16905] New: ICE (segfault) while compiling with -funit-at-a-time rjpeters at klab dot caltech dot edu
` (3 preceding siblings ...)
2004-08-06 23:23 ` [Bug c++/16905] [3.4 regression] ICE (segfault) with exceptions reichelt at gcc dot gnu dot org
@ 2004-08-06 23:42 ` rjpeters at klab dot caltech dot edu
2004-08-09 1:37 ` pinskia at gcc dot gnu dot org
2004-08-24 11:24 ` reichelt at gcc dot gnu dot org
6 siblings, 0 replies; 8+ messages in thread
From: rjpeters at klab dot caltech dot edu @ 2004-08-06 23:42 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From rjpeters at klab dot caltech dot edu 2004-08-06 23:41 -------
(In reply to comment #3)
> Confirmed.
>
> Here's something slightly smaller that crashed when compiled with "g++ -O"
> (regardless of using -funit-at-a-time or -fno-unit-at-a-time).
OK, I attached this smaller testcase as 'smaller.cc' ... it now gives the
following backtrace (crashing on the same line as did 'fail.C'):
#0 loop_optimize (f=0xf6e7a500, dumpfile=0xffffffa3, flags=10)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/loop.c:2774
#1 0x083a12ee in rest_of_handle_loop_optimize (decl=0x0, insns=0xf6e7a500)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/toplev.c:3051
#2 0x083a18be in rest_of_compilation (decl=0xf6da4ca8)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/toplev.c:3329
#3 0x083eecfb in tree_rest_of_compilation (fndecl=0xf6da4ca8, nested_p=false)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/tree-optimize.c:168
#4 0x08128744 in expand_body (fn=0xf6da4ca8)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cp/semantics.c:2932
#5 0x083f0b39 in cgraph_expand_function (node=0xf6da82f4)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cgraphunit.c:538
#6 0x083f0c12 in cgraph_assemble_pending_functions ()
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cgraphunit.c:144
#7 0x083f1b05 in cgraph_finalize_function (decl=0xf6da4ca8, nested=false)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cgraphunit.c:225
#8 0x08128a23 in expand_or_defer_fn (fn=0xf6da4ca8)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cp/semantics.c:3015
#9 0x080ef782 in cp_parser_function_definition_after_declarator (
parser=0xf6d9d740, inline_p=false)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cp/parser.c:14256
#10 0x080efb8d in cp_parser_init_declarator (parser=0xf6d9d740,
decl_specifiers=0xf6da5820, prefix_attributes=0x0,
function_definition_allowed_p=true, member_p=false,
declares_class_or_enum=0, function_definition_p=0xfeee0ca7)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cp/parser.c:14194
#11 0x080ea4d2 in cp_parser_simple_declaration (parser=0xf6d9d740,
function_definition_allowed_p=true)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cp/parser.c:6486
#12 0x080ea638 in cp_parser_block_declaration (parser=0xf6d9d740,
statement_p=false)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cp/parser.c:6402
#13 0x080f05ff in cp_parser_declaration (parser=0xf6d9d740)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cp/parser.c:6322
#14 0x080f08bf in cp_parser_declaration_seq_opt (parser=0xf6d9d740)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cp/parser.c:6231
#15 0x080f0a8b in c_parse_file ()
at /home/rjpeters/build/gcc-3.4-20040730/gcc/cp/parser.c:2319
#16 0x081795b2 in c_common_parse_file (set_yydebug=-93)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/c-opts.c:1237
#17 0x083a3edd in toplev_main (argc=4294967203, argv=0xfefb77bc)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/toplev.c:1822
#18 0x0817cf6e in main (argc=-93, argv=0xffffffa3)
at /home/rjpeters/build/gcc-3.4-20040730/gcc/main.c:35
This is stretching my limits of gcc comprehension, but anyway here goes... the
segfault happens here
at /home/rjpeters/build/gcc-3.4-20040730/gcc/loop.c:2774
2774 current_loop->vtop = insn;
which I guess is due to current_loop being NULL, and this seems to jibe with the
debug dumps that I also attached... in .03.eh the looks "look right" to my
untrained eye (either going LOOP_BEG/LOOP_CONT/LOOP_END or just
LOOP_BEG/LOOP_END). But, then in .04.jump there is now a NOTE_INSN_LOOP_VTOP
that is not contained within a LOOP_BEG/LOOP_END pair. Judging from the code
around the crash location in loop.c, I'd guess that the orphaned VTOP isn't
supposed to happen...
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16905
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug c++/16905] [3.4 regression] ICE (segfault) with exceptions
2004-08-06 21:02 [Bug c++/16905] New: ICE (segfault) while compiling with -funit-at-a-time rjpeters at klab dot caltech dot edu
` (4 preceding siblings ...)
2004-08-06 23:42 ` rjpeters at klab dot caltech dot edu
@ 2004-08-09 1:37 ` pinskia at gcc dot gnu dot org
2004-08-24 11:24 ` reichelt at gcc dot gnu dot org
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-08-09 1:37 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-08-09 01:37 -------
: Search converges between 2004-03-01-3.4 (#2) and 2004-03-15-3.4 (#3).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16905
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug c++/16905] [3.4 regression] ICE (segfault) with exceptions
2004-08-06 21:02 [Bug c++/16905] New: ICE (segfault) while compiling with -funit-at-a-time rjpeters at klab dot caltech dot edu
` (5 preceding siblings ...)
2004-08-09 1:37 ` pinskia at gcc dot gnu dot org
@ 2004-08-24 11:24 ` reichelt at gcc dot gnu dot org
6 siblings, 0 replies; 8+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2004-08-24 11:24 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From reichelt at gcc dot gnu dot org 2004-08-24 11:24 -------
Fixed by Mark's patch
http://gcc.gnu.org/ml/gcc-cvs/2004-08/msg01209.html
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |mmitchel at gcc dot gnu dot
| |org
Status|NEW |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16905
^ permalink raw reply [flat|nested] 8+ messages in thread