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From: "rmansfield at qnx dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/49522] New: Divide by zero in validate_subreg in emit-rtl.c:695
Date: Fri, 24 Jun 2011 17:05:00 -0000 [thread overview]
Message-ID: <bug-49522-4@http.gcc.gnu.org/bugzilla/> (raw)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49522
Summary: Divide by zero in validate_subreg in emit-rtl.c:695
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: rmansfield@qnx.com
Host: x86_64-linux-gnu
Target: arm-unknown-linux-gnueabi
Build: x86_64-linux-gnu
Created attachment 24592
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24592
preprocessed source
$ ./xgcc -v
Using built-in specs.
COLLECT_GCC=./xgcc
Target: arm-unknown-linux-gnueabi
Configured with: ../configure --target=arm-unknown-linux-gnueabi
--prefix=/home/ryan/x-tools/arm-unknown-linux-gnueabi
--with-sysroot=/home/ryan/x-tools/arm-unknown-linux-gnueabi/arm-unknown-linux-gnueabi//sys-root
--disable-multilib
--with-local-prefix=/home/ryan/x-tools/arm-unknown-linux-gnueabi/arm-unknown-linux-gnueabi/sys-root
--disable-nls --enable-threads=posix --enable-symvers=gnu --enable-c99
--enable-long-long --enable-target-optspace
target_alias=arm-unknown-linux-gnueabi --enable-languages=c++ --disable-shared
--disable-libmudflap --disable-libssp
Thread model: posix
gcc version 4.7.0 20110624 (experimental) [trunk revision 175378] (GCC)
$ ./xgcc -B. ~/ice.i -c -O3 -g
/home/ryan/ice.i: In function 'func4':
/home/ryan/ice.i:38:1: internal compiler error: Floating point exception
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
Doesn't crash without -g
Program received signal SIGFPE, Arithmetic exception.
validate_subreg (omode=VOIDmode, imode=SImode, reg=0x7ffff6e33a70, offset=0)
at ../../gcc/emit-rtl.c:695
695 if (offset % osize != 0)
(gdb) bt
#0 validate_subreg (omode=VOIDmode, imode=SImode, reg=0x7ffff6e33a70,
offset=0) at ../../gcc/emit-rtl.c:695
#1 0x0000000000616849 in gen_rtx_SUBREG (mode=VOIDmode, reg=0x7ffff6e33a70,
offset=0) at ../../gcc/emit-rtl.c:775
#2 0x00000000005c82b8 in dead_debug_insert_before (
all_blocks=<value optimized out>) at ../../gcc/df-problems.c:3197
#3 df_note_bb_compute (all_blocks=<value optimized out>)
at ../../gcc/df-problems.c:3399
#4 df_note_compute (all_blocks=<value optimized out>)
at ../../gcc/df-problems.c:3452
#5 0x00000000005c14c9 in df_analyze_problem (dflow=0x144d220,
blocks_to_consider=0x141de88, postorder=0x13fbb50, n_blocks=3)
at ../../gcc/df-core.c:1152
#6 0x00000000005c1729 in df_analyze () at ../../gcc/df-core.c:1249
#7 0x0000000000c50dcb in sched_init () at ../../gcc/haifa-sched.c:3487
#8 0x0000000000c575cb in haifa_sched_init () at ../../gcc/haifa-sched.c:3526
#9 0x00000000008211f5 in schedule_insns () at ../../gcc/sched-rgn.c:3302
#10 0x00000000008217dd in rest_of_handle_sched2 ()
at ../../gcc/sched-rgn.c:3532
#11 0x00000000007c5b30 in execute_one_pass (pass=0x1252d20)
at ../../gcc/passes.c:2059
---Type <return> to continue, or q <return> to quit---
#12 0x00000000007c5e55 in execute_pass_list (pass=0x1252d20)
at ../../gcc/passes.c:2114
#13 0x00000000007c5e67 in execute_pass_list (pass=0x1252300)
at ../../gcc/passes.c:2115
#14 0x00000000007c5e67 in execute_pass_list (pass=0x12522a0)
at ../../gcc/passes.c:2115
#15 0x00000000008cd728 in tree_rest_of_compilation (fndecl=0x7ffff7fa5100)
at ../../gcc/tree-optimize.c:416
#16 0x00000000005a6546 in cgraph_expand_function (node=0x7ffff7f96480)
at ../../gcc/cgraphunit.c:1792
#17 0x00000000005a82ea in cgraph_expand_all_functions ()
at ../../gcc/cgraphunit.c:1851
#18 cgraph_optimize () at ../../gcc/cgraphunit.c:2121
#19 0x00000000005a897a in cgraph_finalize_compilation_unit ()
at ../../gcc/cgraphunit.c:1292
#20 0x000000000049b4d8 in c_write_global_declarations ()
at ../../gcc/c-decl.c:9844
#21 0x000000000086ad66 in compile_file (argc=15, argv=0x7fffffffe0b8)
at ../../gcc/toplev.c:571
#22 do_compile (argc=15, argv=0x7fffffffe0b8) at ../../gcc/toplev.c:1908
#23 toplev_main (argc=15, argv=0x7fffffffe0b8) at ../../gcc/toplev.c:1980
---Type <return> to continue, or q <return> to quit---
#24 0x00007ffff718deff in __libc_start_main (main=0x52de00 <main>, argc=15,
ubp_av=0x7fffffffe0b8, init=<value optimized out>,
fini=<value optimized out>, rtld_fini=<value optimized out>,
stack_end=0x7fffffffe0a8) at libc-start.c:226
#25 0x000000000047f669 in _start ()
next reply other threads:[~2011-06-24 17:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-24 17:05 rmansfield at qnx dot com [this message]
2011-07-01 16:36 ` [Bug debug/49522] " ramana at gcc dot gnu.org
2011-07-04 9:01 ` jakub at gcc dot gnu.org
2011-07-07 16:06 ` jakub at gcc dot gnu.org
2011-07-07 19:11 ` jakub at gcc dot gnu.org
2011-07-07 19:18 ` jakub at gcc dot gnu.org
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