jsoncpp-devel Mailing List for json-cpp

Thank you for the suggestion;

I must admit I gave up on Jconcpp and instead tried the very simple cJSON which worked for me.

Joakim

From: Baptiste Lepilleur [mailto:bap...@gm...]
Sent: 5. august 2013 13:59
To: Joakim Hove
Cc: jso...@li...
Subject: Re: [Jsoncpp-devel] g++ version problem??

I'm also in a corporate environment with an old RedHat and stuck with gcc 4.1.2.  I do not have this issue, but I'm using our own project build system to build jsoncpp (trunk) amalgamated sources.

The crash stack has the smell of incompatible compiler settings, but I don't know enough to about gcc to say for sure.

I would recommend that you try using the amalgamated sources and compile with your own build system to confirm to origin of the issue.

Baptiste.

2013/7/28 Joakim Hove <jo...@st...<mailto:jo...@st...>>
Hello,

I have downloaded jsoncpp and successfully built it; I also issued the command “scons platform=linux-gcc check” to run the tests – the all passed.

I then created my own program to actually test this; the program compiles and links fine – but it goes down witn SIGSEGV when running. My program is

#include <json/json.h>

void parseJson() {
    Json::Reader reader;
}

int main(int argc , char ** argv) {
    parseJson();
    exit(0);
}

I.e. it is very simple stuff. When I try putting the Json::Reader instance in the boyd of main{…} it seems to work.  A backtrace from gdb is inlined below:

#0  0x0000003a560b7672 in __gnu_cxx::__exchange_and_add () from /usr/lib64/libstdc++.so.6
#1  0x0000000000403313 in std::string::_Rep::_M_dispose (this=0xffffffffffffffe9, __a=@0x7fff7fb14957)
    at /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/basic_string.h:232
#2  0x0000000000403360 in ~basic_string (this=0x7fff7fb14ab0)
    at /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/basic_string.h:478
#3  0x00000000004039fe in ~Reader (this=0x7fff7fb149b0) at /private/joaho/Parser/opm-parser/external/json/json-cpp/include/json/reader.h:23
#4  0x0000000000402aba in parseJson () at /private/joaho/Parser/opm-parser/opm/parser/eclipse/ExternalTests/ExternalTests.cpp:50
#5  0x0000000000402ad5 in main (argc=1, argv=0x7fff7fb14bc8)
    at /private/joaho/Parser/opm-parser/opm/parser/eclipse/ExternalTests/ExternalTests.cpp:55

As you can see I have a very old version of g++ (4.1.2). I am in a corporate environment and it is quite painful to get a newer version – do you think this can be the problem?

Regards Joakim



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Thank you

I'm also in a corporate environment with an old RedHat and stuck with gcc
4.1.2.  I do not have this issue, but I'm using our own project build
system to build jsoncpp (trunk) amalgamated sources.

The crash stack has the smell of incompatible compiler settings, but I
don't know enough to about gcc to say for sure.

I would recommend that you try using the amalgamated sources and compile
with your own build system to confirm to origin of the issue.

Baptiste.


2013/7/28 Joakim Hove <jo...@st...>

>  Hello,****
>
> ** **
>
> I have downloaded jsoncpp and successfully built it; I also issued the
> command “scons platform=linux-gcc check” to run the tests – the all passed.
> ****
>
> ** **
>
> I then created my own program to actually test this; the program compiles
> and links fine – but it goes down witn SIGSEGV when running. My program is
> ****
>
> ** **
>
> #include <json/json.h>****
>
> ** **
>
> void parseJson() {****
>
>     Json::Reader reader;****
>
> }****
>
> ** **
>
> int main(int argc , char ** argv) {****
>
>     parseJson();****
>
>     exit(0);****
>
> }****
>
> ** **
>
> I.e. it is very simple stuff. When I try putting the Json::Reader instance
> in the boyd of main{…} it seems to work.  A backtrace from gdb is inlined
> below:****
>
> ** **
>
> #0  0x0000003a560b7672 in __gnu_cxx::__exchange_and_add () from
> /usr/lib64/libstdc++.so.6****
>
> #1  0x0000000000403313 in std::string::_Rep::_M_dispose
> (this=0xffffffffffffffe9, __a=@0x7fff7fb14957)****
>
>     at
> /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/basic_string.h:232
> ****
>
> #2  0x0000000000403360 in ~basic_string (this=0x7fff7fb14ab0)****
>
>     at
> /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/basic_string.h:478
> ****
>
> #3  0x00000000004039fe in ~Reader (this=0x7fff7fb149b0) at
> /private/joaho/Parser/opm-parser/external/json/json-cpp/include/json/reader.h:23
> ****
>
> #4  0x0000000000402aba in parseJson () at
> /private/joaho/Parser/opm-parser/opm/parser/eclipse/ExternalTests/ExternalTests.cpp:50
> ****
>
> #5  0x0000000000402ad5 in main (argc=1, argv=0x7fff7fb14bc8)****
>
>     at
> /private/joaho/Parser/opm-parser/opm/parser/eclipse/ExternalTests/ExternalTests.cpp:55
> ****
>
> ** **
>
> As you can see I have a very old version of g++ (4.1.2). I am in a
> corporate environment and it is quite painful to get a newer version – do
> you think this can be the problem?****
>
> ** **
>
> Regards Joakim****
>
> ** **
>
> ** **
>
> -------------------------------------------------------------------
> The information contained in this message may be CONFIDENTIAL and is
> intended for the addressee only. Any unauthorised use, dissemination of the
> information or copying of this message is prohibited. If you are not the
> addressee, please notify the sender immediately by return e-mail and delete
> this message.
> Thank you
>
>
> ------------------------------------------------------------------------------
> See everything from the browser to the database with AppDynamics
> Get end-to-end visibility with application monitoring from AppDynamics
> Isolate bottlenecks and diagnose root cause in seconds.
> Start your free trial of AppDynamics Pro today!
> http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk
> _______________________________________________
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>
>