Error: string() no default constructor fileRead. (fixed)

Lis · August 26, 2009, 10:51am

I compiled the string.dll ( see this topic: root.cern.ch/phpBB2/viewtopic.php?t=9044 )
I copied the dll and try to run my example file read programm:

[code]// reading a text file
#include
#include
#include
using namespace std;

int main () {
string line;
ifstream myfile (“example.txt”);
if (myfile.is_open()) {
while (! myfile.eof()) {
getline (myfile,line);
cout << line << endl;
}
myfile.close();
}
else cout << “Unable to open file”;
return 0;
}[/code]

Now i get:

C:\Users\Lis\Documents\work\cint_learn>cint.exe -IC:\Users\Lis\Documents\work\ci nt-svn\cint\inc -IC:\Users\Lis\Documents\work\cint-svn\cint\include -IC:\Users\L is\Documents\work\cint-svn\cint\stl -IC:\Users\Lis\Documents\work\cint-svn\refle x\inc fileRead.cxx Error: string() no default constructor fileRead.cxx(8) !!! return from main() function

Do I need to change some .h files or do I need to copy any .h files to use string.dll ?
Thanks Louis.

Axel · August 28, 2009, 10:04am

Hi Louis,

can you check whether string.dll got loaded? You could run “class string” - it should show you the members of string, and it should tell you that they are defined in string.dll. Where did you copy string.dll too?

Cheers, Axel.

Lis · August 28, 2009, 10:38am

Interresting.
class string gives me:

C:\Users\Lis\Documents\work\cint_learn>cint.exe -IC:\Users\Lis\Documents\work\ci nt-svn\cint\inc -IC:\Users\Lis\Documents\work\cint-svn\cint\include -IC:\Users\L is\Documents\work\cint-svn\cint\stl -IC:\Users\Lis\Documents\work\cint-svn\refle x\inc class string Note: posix.dll is not found. Do 'sh setup' in $CINTSYSDIR/lib/posix directory i f you use UNIX. Error: Symbol fpos_tpos is not defined in current scope C:\Users\Lis\Documents\ work\cint-svn\cint\inc\G__ci.h(1142)

If I try to compile posix.dll I get:
awake24.de/paste/database/9fe126443.php

Thanks for your help.
Greets Louis

Lis · August 28, 2009, 10:50am

Fixed it:

C:\Users\Lis\Documents\work\cint-svn\cint\lib\posix>link -nologo -ignore:4049 - ignore:4217 -ignore:4221 -incremental:no -DLL -implib:posix.lib -out:posix.dll w inposix.obj G__c_posix.obj -LIBPATH:"..\..\..\lib" libCint.lib Advapi32.lib k ernel32.lib user32.lib Creating library posix.lib and object posix.exp

Links the library without problems.
Still get:

C:\Users\Lis\Documents\work\cint_learn>cint.exe -IC:\Users\Lis\Documents\work\ci nt-svn\cint\inc -IC:\Users\Lis\Documents\work\cint-svn\cint\include -IC:\Users\L is\Documents\work\cint-svn\cint\stl -IC:\Users\Lis\Documents\work\cint-svn\refle x\inc class string Error: Symbol fpos_tpos is not defined in current scope C:\Users\Lis\Documents\ work\cint-svn\cint\inc\G__ci.h(1142)

And the string.dll is in cint/stl (Sorry forgotten to tell you that).
Greets Louis

Axel · August 28, 2009, 12:54pm

Hi Louis,

you should not specify any CINT include paths to CINT. What does
$ cint
cint> L string
cint> class string
show?

Cheers, Axel.

Lis · August 28, 2009, 3:03pm

If I start without include dirs:

[code]C:\Users\Lis\Documents\work\cint_learn>cint.exe

No main() function found in given source file. Interactive interface started.
‘h’:help, ‘q’:quit, ‘{statements;}’ or ‘p [expr]’ to evaluate

cint.exe> L string
Error: cannot open file “string” (0)
!!!Dictionary position rewound… !!!Error recovered!!!
cint.exe> class string
Error: class,struct,union or type string not defined (0)
!!!Dictionary position rewound… !!!Error recovered!!!
cint.exe>[/code]

I should try to recompile cint and change it’s compilation flags, so that I do not need the include paths anymore, right?

Lis · August 28, 2009, 11:58pm

Ah the commands you told me really helped. At least I know why this happens:

[code]C:\Users\Lis\Documents\work\cint-svn\cint\lib\dll_stl>cint.exe -w2 -zstring -nG
cpp_string.cxx -D__MAKECINT -DG__MAKECINT -c-1 -A -I"…\cint\inc" -I
"…\cint\include" -DG__REDIRECTIO -DG__SHAREDLIB -DG__WIN32 -DWIN32 -D_WIN
32 -DG__NEWSTDHEADER -D_CRT_SECURE_NO_DEPRECATE=1 -DCC_WSDK61 -DMKINC_CWD -DIOSE
_CWD -DG__HAVE_CONFIG -DG__NOMAKEINFO -Z0 str.h
Note: link requested for unknown typedef string::value_type str.h(39)
Note: link requested for unknown class string::iterator str.h(42)
Note: link requested for unknown class string::const_iterator str.h(43)
Note: link requested for unknown class _Ranit<char,long,char*,char&> str.h(44)
Note: link requested for unknown class iterator<random_access_iterator_tag,char,
long,char*,char&> str.h(45)
Note: link requested for unknown typedef string::pointer str.h(56)
Note: link requested for unknown typedef string::const_pointer str.h(57)
Note: link requested for unknown typedef string::reference str.h(58)
Note: link requested for unknown typedef string::difference_type str.h(59)
Note: link requested for unknown typedef string::size_type str.h(60)
Note: link requested for unknown typedef string::traits_type str.h(61)
Warning: #pragma link, function operator==(const string&,const string&) not foun
d str.h(63)
Warning: #pragma link, function operator!=(const string&,const string&) not foun
d str.h(64)
Warning: #pragma link, function operator<(const string&,const string&) not found
str.h(65)
Warning: #pragma link, function operator>(const string&,const string&) not found
str.h(66)
Warning: #pragma link, function operator<=(const string&,const string&) not foun
d str.h(67)
Warning: #pragma link, function operator>=(const string&,const string&) not foun
d str.h(68)
Warning: #pragma link, function operator+(const string&,const string&) not found
str.h(69)
Warning: #pragma link, function operator+(char,const string&) not found str.h(70
)
Warning: #pragma link, function operator+(const string&,char) not found str.h(71
)
Warning: #pragma link, function operator<(const char*,const string&) not found s
tr.h(75)
Warning: #pragma link, function operator>(const char*,const string&) not found s
tr.h(76)
Warning: #pragma link, function operator==(const char*,const string&) not found
str.h(77)
Warning: #pragma link, function operator!=(const char*,const string&) not found
str.h(78)
Warning: #pragma link, function operator<=(const char*,const string&) not found
str.h(79)
Warning: #pragma link, function operator>=(const char*,const string&) not found
str.h(80)
Warning: #pragma link, function operator+(const char*,const string&) not found s
tr.h(81)
Warning: #pragma link, function operator<(const string&,const char*) not found s
tr.h(83)
Warning: #pragma link, function operator>(const string&,const char*) not found s
tr.h(84)
Warning: #pragma link, function operator==(const string&,const char*) not found
str.h(85)
Warning: #pragma link, function operator!=(const string&,const char*) not found
str.h(86)
Warning: #pragma link, function operator<=(const string&,const char*) not found
str.h(87)
Warning: #pragma link, function operator>=(const string&,const char*) not found
str.h(88)
Warning: #pragma link, function operator+(const string&,const char*) not found s
tr.h(89)
Warning: #pragma link, function swap(string&,string&) not found str.h(91)
Note: link requested for unknown function getline str.h(92)
Note: Link requested for undefined class string (ignore this message) (0)

C:\Users\Lis\Documents\work\cint-svn\cint\lib\dll_stl>cl -I"…\cint\inc"
-DG__REDIRECTIO -DG__SHAREDLIB -DG__WIN32 -DWIN32 -D_WIN32 -DG__NEWSTDHEADER -D_
CRT_SECURE_NO_DEPRECATE=1 -DCC_WSDK61 -DMKINC_CWD -DIOSE_CWD -DG__HAVE_CONFIG -D
G__NOMAKEINFO -O2 -MD -nologo -wd4996 -EHs -TP -GR -wd4181 -c G__cpp_string.
cxx
G__cpp_string.cxx

C:\Users\Lis\Documents\work\cint-svn\cint\lib\dll_stl>link -nologo -ignore:4049
-ignore:4217 -ignore:4221 -incremental:no -DLL -implib:string.lib -out:string.d
ll G__cpp_string.obj -LIBPATH:"…\lib" libCint.lib kernel32.lib user32.
lib
Creating library string.lib and object string.exp[/code]
Do I need to add more include paths or howto fix this problem. I don’t know howto solve this right now. If I add more includepaths the dll does not compile anymore.
Is this a bug, maybe a windows implementation problem?

Thanks Louis

pcanal · August 29, 2009, 4:08am

Hi,

This happens when you try to generate the dictionary for string but there is already a string.dll. Before running ‘cint.exe -w2 -zstring …’ step you must delete the string.dll (cint/stl/string.dll).

Cheers,
Philippe.