Bugs item #1708378, was opened at 2007-04-26 23:28
Message generated for change (Comment added) made by jayball
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Category: None
Group: None
Status: Closed
Resolution: Fixed
Priority: 7
Private: No
Submitted By: Jakob Hirsch (jayball)
Assigned to: Marcus Börger (helly)
Summary: segfault in actions.cc
Initial Comment:
Happens in 0.10.8, 0.11.3 and trunk.
Example file is attached (auto-generated by sa-compile of SpamAssassin
3.2.0-rc3)
$ gdb /tmp/re2c
GNU gdb Red Hat Linux (6.5-15.fc6rh)
...
This GDB was configured as "i386-redhat-linux-gnu"...Using host libthread_db
library "/lib/libthread_db.so.1".
(gdb) run -i -b -o scanner1.c scanner1.re
Starting program: /tmp/re2c -i -b -o scanner1.c scanner1.re
Program received signal SIGSEGV, Segmentation fault.
0x08062a8d in re2c::MatchOp::split (this=0x833c5c0, [EMAIL PROTECTED]) at
actions.cc:290
290 CharPtn *x = s.rep[c], *a = x->nxt;
(gdb) p c
$1 = 2807696
(gdb) p r->lb
$2 = 2807696
(gdb) bt full
#0 0x08062a8d in re2c::MatchOp::split (this=0x833c5c0, [EMAIL PROTECTED]) at
actions.cc:290
x = (re2c::CharPtn *) 0x833c540
a = (re2c::CharPtn *) 0xbfbc8388
c = 2807696
r = (re2c::Range *) 0x833c598
#1 0x08062ee0 in re2c::CatOp::split (this=0x833c5e8, [EMAIL PROTECTED]) at
actions.cc:445
No locals.
#2 0x08062ec1 in re2c::CatOp::split (this=0x833c668, [EMAIL PROTECTED]) at
actions.cc:444
No locals.
...
#170 0x08062d47 in re2c::AltOp::split (this=0x83befc8, [EMAIL PROTECTED]) at
actions.cc:412
No locals.
#171 0x08063808 in re2c::genCode ([EMAIL PROTECTED], [EMAIL PROTECTED],
re=0x83befc8, specMap=0x0, [EMAIL PROTECTED], isLastCond=false)
at actions.cc:1012
cs = {fix = 0x0, freeHead = 0x83bf664, freeTail = 0x83bfffc, rep =
0x83beff8, ptn = 0x83bf400}
j = 3009063
rep = (Char *) 0x806d00b
ins = (re2c::Ins *) 0x806d00b
eoi = (re2c::Ins *) 0xbfbc8443
dfa = (re2c::DFA *) 0xba5f0b
#172 0x08060922 in re2c::parse ([EMAIL PROTECTED], [EMAIL PROTECTED], h=0x0) at
parser.y:422
__PRETTY_FUNCTION__ = "void re2c::parse(re2c::Scanner&, std::ostream&,
std::ostream*)"
#173 0x0805bab4 in main (argc=6, argv=0xbfbc88f4) at main.cc:374
null_source = {<re2c::basic_fstream_lc<char,std::basic_istream<char,
std::char_traits<char> >,_S_in,std::char_traits<char> >> = {<> = {<No data
fields>}, <re2c::line_number> = {_vptr.line_number = 0x806cb60}, mybuf =
0x8308448}, <No data fields>}
null_dev = {<> = {<No data fields>}, null_buf = 0x83085e8}
null_scanner = {<re2c::line_number> = {_vptr.line_number = 0x806e0a8},
in = @0xbfbc84a0, out = @0xbfbc86f8,
bot = 0x8368aa0 "\n\t\"auslaenderkriminalitaet\"", ' ' <repeats 12 times>,
"{RET(\"__ZMIRASSISMUSBD_10\");}\n\t\"auslaendischer 'gesundheitstouristen'\"",
' ' <repeats 12 times>, "{RET(\"__DOS_BODY_SUN
__ZMIRASSISMUSBD_9\");}\n\t\"ausweitung unseres marketings und"...,
tok = 0x836a505 "\n}\n", ptr = 0x836a4f3 " return NULL; }\n*/\n}\n", cur =
0x836a505 "\n}\n", pos = 0x836a503 "*/\n}\n",
lim = 0x836a508 "", top = 0x836aaa1 "", eof = 0x836a509 "", ctx = 0x0, tchar
= 0, tline = 215, cline = 215, iscfg = 0}
c = -1
sourceFileName = 0xbfbca675 "scanner1.re"
outputFileName = 0xbfbca66a "scanner1.c"
headerFileName = 0x0
source = {<re2c::basic_fstream_lc<char,std::basic_istream<char,
std::char_traits<char> >,_S_in,std::char_traits<char> >> = {<> = {<No data
fields>}, <re2c::line_number> = {_vptr.line_number = 0x806cb60}, mybuf =
0x8308050}, <No data fields>}
Tried compiling without -O2, no change.
$ gcc -v
Using built-in specs.
Target: i386-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-libgcj-multifile
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk
--disable-dssi --enable-plugin
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic
--host=i386-redhat-linux
Thread model: posix
gcc version 4.1.1 20070105 (Red Hat 4.1.1-51)
$ g++ -v
Using built-in specs.
Target: i386-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-libgcj-multifile
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk
--disable-dssi --enable-plugin
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic
--host=i386-redhat-linux
Thread model: posix
gcc version 4.1.1 20070105 (Red Hat 4.1.1-51)
----------------------------------------------------------------------
>Comment By: Jakob Hirsch (jayball)
Date: 2007-04-27 12:37
Message:
Logged In: YES
user_id=1779537
Originator: YES
Ok, I updated trunk to revision 710, and now it runs fine, even if
compiled with gcc/g++ 4.1.1. Thanks for the quick fix.
Would you recommend using trunk or tags/RELEASE_0_12_0?
----------------------------------------------------------------------
Comment By: Marcus Börger (helly)
Date: 2007-04-27 01:19
Message:
Logged In: YES
user_id=271023
Originator: NO
Actually i highly suggest you use cvs version of either 0.12.0
(unreleased) or even HEAD. It appears the generated code is wrong using the
older re2c versions. I discoverd this while fixing the crash. So in 0.12.0
and HEAD both issues are resolved.
----------------------------------------------------------------------
Comment By: Jakob Hirsch (jayball)
Date: 2007-04-27 01:10
Message:
Logged In: YES
user_id=1779537
Originator: YES
Ok, I've tried gcc/g++ 3.4.6 (compat-gcc-34-c++ from FC6) and it works.
The code re2c generates is the same (I think, at least :), so that's ok.
Thanks for the hint.
----------------------------------------------------------------------
Comment By: Marcus Börger (helly)
Date: 2007-04-27 00:15
Message:
Logged In: YES
user_id=271023
Originator: NO
For the moment you could try an older gcc. Version 4.0 appears to work for
me.
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