#3279: Segmentation fault in reactive program
------------------------------+---------------------------------------------
Reporter: Baughn | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 6.11
Severity: normal | Resolution:
Keywords: | Testcase:
Os: Unknown/Multiple | Architecture: x86_64 (amd64)
------------------------------+---------------------------------------------
Comment (by int-e):
Apparently {{{stg_sel_ret_0_upd_info}}} is called with an
{{{stg_dummy_ret_closure}}} argument. Where does it come from?
{{{RaiseAsync.c}}}?
{{{
> ghc --version
The Glorious Glasgow Haskell Compilation System, version 6.10.3
> gdb ./crash -ex 'break stg_sel_ret_0_upd_info' -ex 'run' -ex 'c 477' -ex
'i r'
GNU gdb 6.8
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu"...
Breakpoint 1 at 0x8142e8c
Starting program: /var/home/bf3/t/reactive/crash
[Thread debugging using libthread_db enabled]
[New Thread 0xb7ecb6c0 (LWP 10828)]
[Switching to Thread 0xb7ecb6c0 (LWP 10828)]
Breakpoint 1, 0x08142e8c in stg_sel_ret_0_upd_info ()
Current language: auto; currently asm
Will ignore next 476 crossings of breakpoint 1. Continuing.
<Imp NoBound 2.0,1.0>
<Imp NoBound 2.5,2.0>
<Imp NoBound 3.2,3.0>
<Imp NoBound 3.7,4.0>
"never-never"
<Imp NoBound 2.0,()>
<Imp NoBound 2.5,()>
Breakpoint 1, 0x08142e8c in stg_sel_ret_0_upd_info ()
eax 0xb7dcb4c8 -1210272568
ecx 0xb7d00000 -1211105280
edx 0xb7d01960 -1211098784
ebx 0x81819c8 135797192
esp 0xbffbe8ac 0xbffbe8ac
ebp 0xb7cf2fa4 0xb7cf2fa4
esi 0x817edc8 135785928
edi 0xb7dcc314 -1210268908
eip 0x8142e8c 0x8142e8c <stg_sel_ret_0_upd_info>
eflags 0x246 [ PF ZF IF ]
cs 0x73 115
ss 0x7b 123
ds 0x7b 123
es 0x7b 123
fs 0x0 0
gs 0x33 51
(gdb) x $esi & -4
0x817edc8 <stg_dummy_ret_closure>: 0x08142d4c
(gdb) ni 8
Program received signal SIGSEGV, Segmentation fault.
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3279#comment:2>
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