error with __attribute__

[cherry-wb]

Hello, I can not use ccr to compile code below, the error message like this:
root@b94c935ff494:/CCR/test# ccr++ -o ./funcptr ./funcptr.c
clang-3.9: warning: treating 'c' input as 'c++' when in C++ mode, this behavior is deprecated
[CCR-ERROR] Was not able to find the offset@.text for /tmp/funcptr-f2e918.o
ld: object.h:1459: uint64_t gold::Relobj::yarp_object_id(std::__cxx11::string): Assertion `0' failed.
clang-3.9: error: unable to execute command: Aborted (core dumped)
clang-3.9: error: linker command failed due to signal (use -v to see invocation)

#include
using namespace std;
#include <stdio.h>
#include <unistd.h>
#define CTOR_PRIO 3

attribute((constructor(CTOR_PRIO)))
void __cbsr_auto_early(void) {
fprintf(stderr,"__cbsr_auto_early。");
}

attribute((constructor()))
void __cbsr_auto_early_1(void) {
fprintf(stderr,"__cbsr_auto_early_1。");
}
int main() {
int a = 10;
int b = 20;
int c;
while(true){
printf("%d + %d = %d\n",a,b,c);
cout << "!!!Hello World!!!" << endl; // prints !!!Hello World!!!
sleep(1);
}
return 0;
}

is there anything wrong?