dar/libdar crash when -y0 passed on command line

Hi Denis,

When running dar with -y0 option, I get SIGSEGV.

john@igloo:~/tmp$ dar -c test-dar1 -R ./test-dar-compression -y0 -Z "*.gz" 
-Z "*.bz2"
Reading config file: /home/john/.darrc
Segmentation fault

Here is the output from gdb:

john@igloo:~/tmp$ gdb dar
[...]
(gdb) set args -c test-compress -R ./test-dar-compression -y0
(gdb) r
Starting program: /usr/local/bin/dar -c test-compress -R 
./test-dar-compression -y0
Reading config file: /home/john/.darrc

Program received signal SIGSEGV, Segmentation fault.
0x401c69c8 in vtable for __cxxabiv1::__si_class_type_info ()
   from /usr/lib/libstdc++.so.5
(gdb) bt
#0  0x401c69c8 in vtable for __cxxabiv1::__si_class_type_info ()
   from /usr/lib/libstdc++.so.5
#1  0x40204ee1 in _Unwind_RaiseException () from /usr/lib/libgcc_s.so.1
#2  0x401b7299 in __cxa_throw () from /usr/lib/libstdc++.so.5
#3  0x4009878d in libdar::compressor::init(libdar::compression, 
libdar::generic_file*, unsigned) () from /usr/local/lib/libdar64.so.1
#4  0x40097f18 in libdar::compressor::compressor(libdar::compression, 
libdar::generic_file&, unsigned) () from /usr/local/lib/libdar64.so.1
#5  0x4006a9ad in libdar::op_create_in(bool, libdar::path const&, 
libdar::path const&, libdar::path const*, libdar::mask const&, 
libdar::mask const&, std::string const&, std::string const&, std::string 
const*, bool, bool, bool, bool, bool, libdar::compression, unsigned, 
libdar::limitint<unsigned long long> const&, libdar::limitint<unsigned 
long long> const&, bool, bool, std::string const&, std::string const&, 
std::string const&, std::string const&, std::string const&, std::string 
const&, libdar::mask const&, libdar::limitint<unsigned long long> const&, 
bool, libdar::l---Type <return> to continue, or q <return> to quit---
imitint<unsigned long long> const&) () from /usr/local/lib/libdar64.so.1
#6  0x40064ad7 in libdar::op_create(libdar::path const&, libdar::path 
const&, libdar::path const*, libdar::mask const&, libdar::mask const&, 
std::string const&, std::string const&, std::string const*, bool, bool, 
bool, bool, bool, libdar::compression, unsigned, libdar::limitint<unsigned 
long long> const&, libdar::limitint<unsigned long long> const&, bool, 
bool, std::string const&, std::string const&, std::string const&, 
std::string const&, std::string const&, std::string const&, libdar::mask 
const&, libdar::limitint<unsigned long long> const&, bool, bool, 
libdar::limitint<unsigned long long> const&) () from 
/usr/local/lib/libdar64.so.1
#7  0x0805be1b in little_main(int, char**, char const**) ()
#8  0x0805dfe1 in dar_suite_global(int, char**, char const**, int (*)(int, 
char**, char const**)) ()
#9  0x0805b8ea in main ()
#10 0x4021fbb4 in __libc_start_main () from /lib/libc.so.6
(gdb)

In KDar I restrict the compression level to the range 1--9 for gzip,
and disable it altogether for bzip2.

But perhaps this "exception" should be caught at the libdar level?

JB
-- 
Johnathan K. Burchill, Ph.D.
Department of Physics and Astronomy
University of Calgary
2500 University Drive N.W.
Calgary, AB T2N 1N4
Canada

(403) 217-4286
[email protected]



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