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Re: [Jsoncpp-devel] Bug?
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From: Baptiste L. <bl...@us...> - 2009-10-15 07:43:59
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This is strange. The only way other.c_str_ can be null is for other to be an array index:
Value::CZString::CZString( int index )
: cstr_( 0 )
, index_( index )
{
}
But trying to access an objectValue or an arrayValue with the "wrong" type should be detected before we even go to the comparison level:
Value &
Value::operator[]( const char *key )
{
return resolveReference( key, false );
}
Value &
Value::resolveReference( const char *key,
bool isStatic )
{
JSON_ASSERT( type_ == nullValue || type_ == objectValue );
Do you have any idea what is content of you value and what access you are doing?
----- Original Message -----
From: Scott Sibley
To: jso...@li...
Sent: Wednesday 14 October 2009 03:27
Subject: [Jsoncpp-devel] Bug?
Looks like other.cstr_ should be checked as well.#0 0x00212bd8 in strcmp () from /lib/libc.so.6#1 0x0012ed2f in Json::Value::CZString::operator< (this=0x8317300, other=@0xbfffeeac)
at src/lib_json/json_value.cpp:221
#2 0x001361b0 in std::less<Json::Value::CZString>::operator() (this=0x83173a0, __x=@0x8317300, __y=@0xbfffeeac)
at /usr/lib/gcc/i586-redhat-linux/4.4.1/../../../../include/c++/4.4.1/bits/stl_function.h:230
#3 0x00136101 in std::_Rb_tree<Json::Value::CZString, std::pair<Json::Value::CZString const, Json::Value>, std::_Select1st<std::pair<Json::Value::CZString const, Json::Value> >, std::less<Json::Value::CZString>, std::allocator<std::pair<Json::Value::CZString const, Json::Value> > >::_M_lower_bound (this=0x83173a0,
__x=0x83172f0, __y=0x83173a4, __k=@0xbfffeeac)
at /usr/lib/gcc/i586-redhat-linux/4.4.1/../../../../include/c++/4.4.1/bits/stl_tree.h:986
#4 0x001348da in std::_Rb_tree<Json::Value::CZString, std::pair<Json::Value::CZString const, Json::Value>, std::_Select1st<std::pair<Json::Value::CZString const, Json::Value> >, std::less<Json::Value::CZString>, std::allocator<std::pair<Json::Value::CZString const, Json::Value> > >::find (this=0x83173a0, __k=@0xbfffeeac)
at /usr/lib/gcc/i586-redhat-linux/4.4.1/../../../../include/c++/4.4.1/bits/stl_tree.h:1421
#5 0x0013383a in std::map<Json::Value::CZString, Json::Value, std::less<Json::Value::CZString>, std::allocator<std::pair<Json::Value::CZString const, Json::Value> > >::find (this=0x83173a0, __x=@0xbfffeeac)
at /usr/lib/gcc/i586-redhat-linux/4.4.1/../../../../include/c++/4.4.1/bits/stl_map.h:659
#6 0x00131779 in Json::Value::operator[] (this=0x8317280, key=0xbfffef74 "col1") at src/lib_json/json_value.cpp:1055
#7 0x00131ba8 in Json::Value::isMember (this=0x8317280, key=0xbfffef74 "col1") at src/lib_json/json_value.cpp:1169
#8 0x0805cf4d in CFG::CFG_Fetch_Raw (this=0x825846c, section=0x8317280, key=0xbfffef74 "col1", defval=0x0) at CFG.cpp:48
#9 0x08050e5b in Generic::CFGSetup (this=0x825846c, k=0x8255e2c "display_qt") at Generic.cpp:89#10 0x0804df6a in LCDControl::ConfigSetup (this=0xbffff2a8) at LCDControl.cpp:81
#11 0x0804d93b in LCDControl::Start (this=0xbffff2a8, argc=1, argv=0xbffff404) at LCDControl.cpp:15#12 0x0804f224 in main (argc=1, argv=0xbffff404) at Main.cpp:7
boolValue::CZString::operator<( const CZString &other ) const
{ if ( cstr_ )
return strcmp( cstr_, other.cstr_ ) < 0; //src/lib_json/json_value.cpp:221
return index_ < other.index_;
}
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